controls/combo.c

   1 /*
   2  * Combo controls
   3  *
   4  * Copyright 1997 Alex Korobka
   5  *
   6  * FIXME: roll up in Netscape 3.01.
   7  */
   8
   9 #include <string.h>
  10
  11 #include "winbase.h"
  12 #include "windef.h"
  13 #include "wingdi.h"
  14 #include "winuser.h"
  15 #include "wine/winuser16.h"
  16 #include "win.h"
  17 #include "spy.h"
  18 #include "user.h"
  19 #include "heap.h"
  20 #include "combo.h"
  21 #include "drive.h"
  22 #include "debugtools.h"
  23 #include "tweak.h"
  24
  25 DEFAULT_DEBUG_CHANNEL(combo)
  26
  27   /* bits in the dwKeyData */
  28 #define KEYDATA_ALT             0x2000
  29 #define KEYDATA_PREVSTATE       0x4000
  30
  31 /*
  32  * Additional combo box definitions
  33  */
  34
  35 #define CB_GETPTR( wnd )      (*(LPHEADCOMBO*)((wnd)->wExtra))
  36 #define CB_NOTIFY( lphc, code ) \
  37         (SendMessageA( (lphc)->owner, WM_COMMAND, \
  38                          MAKEWPARAM((lphc)->self->wIDmenu, (code)), (lphc)->self->hwndSelf))
  39 #define CB_GETEDITTEXTLENGTH( lphc ) \
  40         (SendMessageA( (lphc)->hWndEdit, WM_GETTEXTLENGTH, 0, 0 ))
  41
  42 #define ISWIN31 (LOWORD(GetVersion()) == 0x0a03)
  43
  44 /*
  45  * Drawing globals
  46  */
  47 static HBITMAP  hComboBmp = 0;
  48 static UINT     CBitHeight, CBitWidth;
  49
  50 /*
  51  * Look and feel dependant "constants"
  52  */
  53
  54 #define COMBO_YBORDERGAP         5
  55 #define COMBO_XBORDERSIZE()      ( (TWEAK_WineLook == WIN31_LOOK) ? 0 : 2 )
  56 #define COMBO_YBORDERSIZE()      ( (TWEAK_WineLook == WIN31_LOOK) ? 0 : 2 )
  57 #define COMBO_EDITBUTTONSPACE()  ( (TWEAK_WineLook == WIN31_LOOK) ? 8 : 0 )
  58 #define EDIT_CONTROL_PADDING()   ( (TWEAK_WineLook == WIN31_LOOK) ? 0 : 1 )
  59
  60 /***********************************************************************
  61  *           COMBO_Init
  62  *
  63  * Load combo button bitmap.
  64  */
  65 static BOOL COMBO_Init()
  66 {
  67   HDC           hDC;
  68
  69   if( hComboBmp ) return TRUE;
  70   if( (hDC = CreateCompatibleDC(0)) )
  71   {
  72     BOOL        bRet = FALSE;
  73     if( (hComboBmp = LoadBitmapA(0, MAKEINTRESOURCEA(OBM_COMBO))) )
  74     {
  75       BITMAP      bm;
  76       HBITMAP     hPrevB;
  77       RECT        r;
  78
  79       GetObjectA( hComboBmp, sizeof(bm), &bm );
  80       CBitHeight = bm.bmHeight;
  81       CBitWidth  = bm.bmWidth;
  82
  83       TRACE("combo bitmap [%i,%i]\n", CBitWidth, CBitHeight );
  84
  85       hPrevB = SelectObject16( hDC, hComboBmp);
  86       SetRect( &r, 0, 0, CBitWidth, CBitHeight );
  87       InvertRect( hDC, &r );
  88       SelectObject( hDC, hPrevB );
  89       bRet = TRUE;
  90     }
  91     DeleteDC( hDC );
  92     return bRet;
  93   }
  94   return FALSE;
  95 }
  96
  97 /***********************************************************************
  98  *           COMBO_NCCreate
  99  */
 100 static LRESULT COMBO_NCCreate(WND* wnd, LPARAM lParam)
 101 {
 102    LPHEADCOMBO          lphc;
 103
 104    if ( wnd && COMBO_Init() &&
 105       (lphc = HeapAlloc(GetProcessHeap(), 0, sizeof(HEADCOMBO))) )
 106    {
 107         LPCREATESTRUCTA     lpcs = (CREATESTRUCTA*)lParam;
 108
 109         memset( lphc, 0, sizeof(HEADCOMBO) );
 110        *(LPHEADCOMBO*)wnd->wExtra = lphc;
 111
 112        /* some braindead apps do try to use scrollbar/border flags */
 113
 114         lphc->dwStyle = (lpcs->style & ~(WS_BORDER | WS_HSCROLL | WS_VSCROLL));
 115         wnd->dwStyle &= ~(WS_BORDER | WS_HSCROLL | WS_VSCROLL);
 116
 117         /*
 118          * We also have to remove the client edge style to make sure
 119          * we don't end-up with a non client area.
 120          */
 121         wnd->dwExStyle &= ~(WS_EX_CLIENTEDGE);
 122
 123         if( !(lpcs->style & (CBS_OWNERDRAWFIXED | CBS_OWNERDRAWVARIABLE)) )
 124               lphc->dwStyle |= CBS_HASSTRINGS;
 125         if( !(wnd->dwExStyle & WS_EX_NOPARENTNOTIFY) )
 126               lphc->wState |= CBF_NOTIFY;
 127
 128         TRACE("[0x%08x], style = %08x\n",
 129                      (UINT)lphc, lphc->dwStyle );
 130
 131         return (LRESULT)(UINT)wnd->hwndSelf;
 132     }
 133     return (LRESULT)FALSE;
 134 }
 135
 136 /***********************************************************************
 137  *           COMBO_NCDestroy
 138  */
 139 static LRESULT COMBO_NCDestroy( LPHEADCOMBO lphc )
 140 {
 141
 142    if( lphc )
 143    {
 144        WND*             wnd = lphc->self;
 145
 146        TRACE("[%04x]: freeing storage\n", CB_HWND(lphc));
 147
 148        if( (CB_GETTYPE(lphc) != CBS_SIMPLE) && lphc->hWndLBox )
 149            DestroyWindow( lphc->hWndLBox );
 150
 151        HeapFree( GetProcessHeap(), 0, lphc );
 152        wnd->wExtra[0] = 0;
 153    }
 154    return 0;
 155 }
 156
 157 /***********************************************************************
 158  *           CBGetTextAreaHeight
 159  *
 160  * This method will calculate the height of the text area of the
 161  * combobox.
 162  * The height of the text area is set in two ways.
 163  * It can be set explicitely through a combobox message of through a
 164  * WM_MEASUREITEM callback.
 165  * If this is not the case, the height is set to 13 dialog units.
 166  * This height was determined through experimentation.
 167  */
 168 static INT CBGetTextAreaHeight(
 169   HWND        hwnd,
 170   LPHEADCOMBO lphc)
 171 {
 172   INT iTextItemHeight;
 173
 174   if( lphc->editHeight ) /* explicitly set height */
 175   {
 176     iTextItemHeight = lphc->editHeight;
 177   }
 178   else
 179   {
 180     TEXTMETRICA tm;
 181     HDC         hDC       = GetDC(hwnd);
 182     HFONT       hPrevFont = 0;
 183     INT         baseUnitY;
 184
 185     if (lphc->hFont)
 186       hPrevFont = SelectObject( hDC, lphc->hFont );
 187
 188     GetTextMetricsA(hDC, &tm);
 189
 190     baseUnitY = tm.tmHeight;
 191
 192     if( hPrevFont )
 193       SelectObject( hDC, hPrevFont );
 194
 195     ReleaseDC(hwnd, hDC);
 196
 197     iTextItemHeight = ((13 * baseUnitY) / 8);
 198
 199     /*
 200      * This "formula" calculates the height of the complete control.
 201      * To calculate the height of the text area, we have to remove the
 202      * borders.
 203      */
 204     iTextItemHeight -= 2*COMBO_YBORDERSIZE();
 205   }
 206
 207   /*
 208    * Check the ownerdraw case if we haven't asked the parent the size
 209    * of the item yet.
 210    */
 211   if ( CB_OWNERDRAWN(lphc) &&
 212        (lphc->wState & CBF_MEASUREITEM) )
 213   {
 214     MEASUREITEMSTRUCT measureItem;
 215     RECT              clientRect;
 216     INT               originalItemHeight = iTextItemHeight;
 217
 218     /*
 219      * We use the client rect for the width of the item.
 220      */
 221     GetClientRect(hwnd, &clientRect);
 222
 223     lphc->wState &= ~CBF_MEASUREITEM;
 224
 225     /*
 226      * Send a first one to measure the size of the text area
 227      */
 228     measureItem.CtlType    = ODT_COMBOBOX;
 229     measureItem.CtlID      = lphc->self->wIDmenu;
 230     measureItem.itemID     = -1;
 231     measureItem.itemWidth  = clientRect.right;
 232     measureItem.itemHeight = iTextItemHeight - 6; /* ownerdrawn cb is taller */
 233     measureItem.itemData   = 0;
 234     SendMessageA(lphc->owner, WM_MEASUREITEM,
 235                  (WPARAM)measureItem.CtlID, (LPARAM)&measureItem);
 236     iTextItemHeight = 6 + measureItem.itemHeight;
 237
 238     /*
 239      * Send a second one in the case of a fixed ownerdraw list to calculate the
 240      * size of the list items. (we basically do this on behalf of the listbox)
 241      */
 242     if (lphc->dwStyle & CBS_OWNERDRAWFIXED)
 243     {
 244       measureItem.CtlType    = ODT_COMBOBOX;
 245       measureItem.CtlID      = lphc->self->wIDmenu;
 246       measureItem.itemID     = 0;
 247       measureItem.itemWidth  = clientRect.right;
 248       measureItem.itemHeight = originalItemHeight;
 249       measureItem.itemData   = 0;
 250       SendMessageA(lphc->owner, WM_MEASUREITEM,
 251                    (WPARAM)measureItem.CtlID, (LPARAM)&measureItem);
 252       lphc->fixedOwnerDrawHeight = measureItem.itemHeight;
 253     }
 254
 255     /*
 256      * Keep the size for the next time
 257      */
 258     lphc->editHeight = iTextItemHeight;
 259   }
 260
 261   return iTextItemHeight;
 262 }
 263
 264 /***********************************************************************
 265  *           CBForceDummyResize
 266  *
 267  * The dummy resize is used for listboxes that have a popup to trigger
 268  * a re-arranging of the contents of the combobox and the recalculation
 269  * of the size of the "real" control window.
 270  */
 271 static void CBForceDummyResize(
 272   LPHEADCOMBO lphc)
 273 {
 274   RECT windowRect;
 275   int newComboHeight;
 276
 277   newComboHeight = CBGetTextAreaHeight(CB_HWND(lphc),lphc) + 2*COMBO_YBORDERSIZE();
 278
 279   GetWindowRect(CB_HWND(lphc), &windowRect);
 280
 281   /*
 282    * We have to be careful, resizing a combobox also has the meaning that the
 283    * dropped rect will be resized. In this case, we want to trigger a resize
 284    * to recalculate layout but we don't want to change the dropped rectangle
 285    * So, we pass the height of text area of control as the height.
 286    * this will cancel-out in the processing of the WM_WINDOWPOSCHANGING
 287    * message.
 288    */
 289   SetWindowPos( CB_HWND(lphc),
 290                 (HWND)NULL,
 291                 0, 0,
 292                 windowRect.right  - windowRect.left,
 293                 newComboHeight,
 294                 SWP_NOMOVE | SWP_NOZORDER | SWP_NOACTIVATE );
 295 }
 296
 297 /***********************************************************************
 298  *           CBCalcPlacement
 299  *
 300  * Set up component coordinates given valid lphc->RectCombo.
 301  */
 302 static void CBCalcPlacement(
 303   HWND        hwnd,
 304   LPHEADCOMBO lphc,
 305   LPRECT      lprEdit,
 306   LPRECT      lprButton,
 307   LPRECT      lprLB)
 308 {
 309   /*
 310    * Again, start with the client rectangle.
 311    */
 312   GetClientRect(hwnd, lprEdit);
 313
 314   /*
 315    * Remove the borders
 316    */
 317   InflateRect(lprEdit, -COMBO_XBORDERSIZE(), -COMBO_YBORDERSIZE());
 318
 319   /*
 320    * Chop off the bottom part to fit with the height of the text area.
 321    */
 322   lprEdit->bottom = lprEdit->top + CBGetTextAreaHeight(hwnd, lphc);
 323
 324   /*
 325    * The button starts the same vertical position as the text area.
 326    */
 327   CopyRect(lprButton, lprEdit);
 328
 329   /*
 330    * If the combobox is "simple" there is no button.
 331    */
 332   if( CB_GETTYPE(lphc) == CBS_SIMPLE )
 333     lprButton->left = lprButton->right = lprButton->bottom = 0;
 334   else
 335   {
 336     /*
 337      * Let's assume the combobox button is the same width as the
 338      * scrollbar button.
 339      * size the button horizontally and cut-off the text area.
 340      */
 341     lprButton->left = lprButton->right - GetSystemMetrics(SM_CXVSCROLL);
 342     lprEdit->right  = lprButton->left;
 343   }
 344
 345   /*
 346    * In the case of a dropdown, there is an additional spacing between the
 347    * text area and the button.
 348    */
 349   if( CB_GETTYPE(lphc) == CBS_DROPDOWN )
 350   {
 351     lprEdit->right -= COMBO_EDITBUTTONSPACE();
 352   }
 353
 354   /*
 355    * If we have an edit control, we space it away from the borders slightly.
 356    */
 357   if (CB_GETTYPE(lphc) != CBS_DROPDOWNLIST)
 358   {
 359     InflateRect(lprEdit, -EDIT_CONTROL_PADDING(), -EDIT_CONTROL_PADDING());
 360   }
 361
 362   /*
 363    * Adjust the size of the listbox popup.
 364    */
 365   if( CB_GETTYPE(lphc) == CBS_SIMPLE )
 366   {
 367     /*
 368      * Use the client rectangle to initialize the listbox rectangle
 369      */
 370     GetClientRect(hwnd, lprLB);
 371
 372     /*
 373      * Then, chop-off the top part.
 374      */
 375     lprLB->top = lprEdit->bottom + COMBO_YBORDERSIZE();
 376   }
 377   else
 378   {
 379     /*
 380      * Make sure the dropped width is as large as the combobox itself.
 381      */
 382     if (lphc->droppedWidth < (lprButton->right + COMBO_XBORDERSIZE()))
 383     {
 384       lprLB->right  = lprLB->left + (lprButton->right + COMBO_XBORDERSIZE());
 385
 386       /*
 387        * In the case of a dropdown, the popup listbox is offset to the right.
 388        * so, we want to make sure it's flush with the right side of the
 389        * combobox
 390        */
 391       if( CB_GETTYPE(lphc) == CBS_DROPDOWN )
 392         lprLB->right -= COMBO_EDITBUTTONSPACE();
 393     }
 394     else
 395        lprLB->right = lprLB->left + lphc->droppedWidth;
 396   }
 397
 398   TRACE("\ttext\t= (%i,%i-%i,%i)\n",
 399         lprEdit->left, lprEdit->top, lprEdit->right, lprEdit->bottom);
 400
 401   TRACE("\tbutton\t= (%i,%i-%i,%i)\n",
 402         lprButton->left, lprButton->top, lprButton->right, lprButton->bottom);
 403
 404   TRACE("\tlbox\t= (%i,%i-%i,%i)\n",
 405         lprLB->left, lprLB->top, lprLB->right, lprLB->bottom );
 406 }
 407
 408 /***********************************************************************
 409  *           CBGetDroppedControlRect
 410  */
 411 static void CBGetDroppedControlRect( LPHEADCOMBO lphc, LPRECT lpRect)
 412 {
 413     /* In windows, CB_GETDROPPEDCONTROLRECT returns the upper left corner
 414      of the combo box and the lower right corner of the listbox */
 415
 416     GetWindowRect(lphc->self->hwndSelf, lpRect);
 417
 418     lpRect->right =  lpRect->left + lphc->droppedRect.right - lphc->droppedRect.left;
 419     lpRect->bottom = lpRect->top + lphc->droppedRect.bottom - lphc->droppedRect.top;
 420
 421 }
 422
 423 /***********************************************************************
 424  *           COMBO_WindowPosChanging
 425  */
 426 static LRESULT COMBO_WindowPosChanging(
 427   HWND        hwnd,
 428   LPHEADCOMBO lphc,
 429   WINDOWPOS*  posChanging)
 430 {
 431   /*
 432    * We need to override the WM_WINDOWPOSCHANGING method to handle all
 433    * the non-simple comboboxes. The problem is that those controls are
 434    * always the same height. We have to make sure they are not resized
 435    * to another value.
 436    */
 437   if ( ( CB_GETTYPE(lphc) != CBS_SIMPLE ) &&
 438        ((posChanging->flags & SWP_NOSIZE) == 0) )
 439   {
 440     int newComboHeight;
 441
 442     newComboHeight = CBGetTextAreaHeight(hwnd,lphc) +
 443                       2*COMBO_YBORDERSIZE();
 444
 445     /*
 446      * Resizing a combobox has another side effect, it resizes the dropped
 447      * rectangle as well. However, it does it only if the new height for the
 448      * combobox is different than the height it should have. In other words,
 449      * if the application resizing the combobox only had the intention to resize
 450      * the actual control, for example, to do the layout of a dialog that is
 451      * resized, the height of the dropdown is not changed.
 452      */
 453     if (posChanging->cy != newComboHeight)
 454     {
 455       lphc->droppedRect.bottom = lphc->droppedRect.top + posChanging->cy - newComboHeight;
 456
 457       posChanging->cy = newComboHeight;
 458     }
 459   }
 460
 461   return 0;
 462 }
 463
 464 /***********************************************************************
 465  *           COMBO_Create
 466  */
 467 static LRESULT COMBO_Create( LPHEADCOMBO lphc, WND* wnd, LPARAM lParam)
 468 {
 469   static char clbName[] = "ComboLBox";
 470   static char editName[] = "Edit";
 471
 472   LPCREATESTRUCTA  lpcs = (CREATESTRUCTA*)lParam;
 473
 474   if( !CB_GETTYPE(lphc) ) lphc->dwStyle |= CBS_SIMPLE;
 475   if( CB_GETTYPE(lphc) != CBS_DROPDOWNLIST ) lphc->wState |= CBF_EDIT;
 476
 477   lphc->self  = wnd;
 478   lphc->owner = lpcs->hwndParent;
 479
 480   /*
 481    * The item height and dropped width are not set when the control
 482    * is created.
 483    */
 484   lphc->droppedWidth = lphc->editHeight = 0;
 485
 486   /*
 487    * The first time we go through, we want to measure the ownerdraw item
 488    */
 489   lphc->wState |= CBF_MEASUREITEM;
 490
 491   /* M$ IE 3.01 actually creates (and rapidly destroys) an ownerless combobox */
 492
 493   if( lphc->owner || !(lpcs->style & WS_VISIBLE) )
 494   {
 495       UINT lbeStyle   = 0;
 496       UINT lbeExStyle = 0;
 497
 498       /*
 499        * Initialize the dropped rect to the size of the client area of the
 500        * control and then, force all the areas of the combobox to be
 501        * recalculated.
 502        */
 503       GetClientRect( wnd->hwndSelf, &lphc->droppedRect );
 504
 505       CBCalcPlacement(wnd->hwndSelf,
 506                       lphc,
 507                       &lphc->textRect,
 508                       &lphc->buttonRect,
 509                       &lphc->droppedRect );
 510
 511       /*
 512        * Adjust the position of the popup listbox if it's necessary
 513        */
 514       if ( CB_GETTYPE(lphc) != CBS_SIMPLE )
 515       {
 516         lphc->droppedRect.top   = lphc->textRect.bottom + COMBO_YBORDERSIZE();
 517
 518         /*
 519          * If it's a dropdown, the listbox is offset
 520          */
 521         if( CB_GETTYPE(lphc) == CBS_DROPDOWN )
 522           lphc->droppedRect.left += COMBO_EDITBUTTONSPACE();
 523
 524         ClientToScreen(wnd->hwndSelf, (LPPOINT)&lphc->droppedRect);
 525         ClientToScreen(wnd->hwndSelf, (LPPOINT)&lphc->droppedRect.right);
 526       }
 527
 528       /* create listbox popup */
 529
 530       lbeStyle = (LBS_NOTIFY | WS_BORDER | WS_CLIPSIBLINGS | WS_CHILD) |
 531                  (lpcs->style & (WS_VSCROLL | CBS_OWNERDRAWFIXED | CBS_OWNERDRAWVARIABLE));
 532
 533       if( lphc->dwStyle & CBS_SORT )
 534         lbeStyle |= LBS_SORT;
 535       if( lphc->dwStyle & CBS_HASSTRINGS )
 536         lbeStyle |= LBS_HASSTRINGS;
 537       if( lphc->dwStyle & CBS_NOINTEGRALHEIGHT )
 538         lbeStyle |= LBS_NOINTEGRALHEIGHT;
 539       if( lphc->dwStyle & CBS_DISABLENOSCROLL )
 540         lbeStyle |= LBS_DISABLENOSCROLL;
 541
 542       if( CB_GETTYPE(lphc) == CBS_SIMPLE )      /* child listbox */
 543       {
 544         lbeStyle |= WS_VISIBLE;
 545
 546         /*
 547          * In win 95 look n feel, the listbox in the simple combobox has
 548          * the WS_EXCLIENTEDGE style instead of the WS_BORDER style.
 549          */
 550         if (TWEAK_WineLook > WIN31_LOOK)
 551         {
 552           lbeStyle   &= ~WS_BORDER;
 553           lbeExStyle |= WS_EX_CLIENTEDGE;
 554         }
 555       }
 556
 557       lphc->hWndLBox = CreateWindowExA(lbeExStyle,
 558                                        clbName,
 559                                        NULL,
 560                                        lbeStyle,
 561                                        lphc->droppedRect.left,
 562                                        lphc->droppedRect.top,
 563                                        lphc->droppedRect.right - lphc->droppedRect.left,
 564                                        lphc->droppedRect.bottom - lphc->droppedRect.top,
 565                                        lphc->self->hwndSelf,
 566                                        (HMENU)ID_CB_LISTBOX,
 567                                        lphc->self->hInstance,
 568                                        (LPVOID)lphc );
 569
 570       if( lphc->hWndLBox )
 571       {
 572           BOOL  bEdit = TRUE;
 573           lbeStyle = WS_CHILD | WS_VISIBLE | ES_NOHIDESEL | ES_LEFT | ES_COMBO;
 574
 575           /*
 576            * In Win95 look, the border fo the edit control is
 577            * provided by the combobox
 578            */
 579           if (TWEAK_WineLook == WIN31_LOOK)
 580             lbeStyle |= WS_BORDER;
 581
 582           if( lphc->wState & CBF_EDIT )
 583           {
 584               if( lphc->dwStyle & CBS_OEMCONVERT )
 585                   lbeStyle |= ES_OEMCONVERT;
 586               if( lphc->dwStyle & CBS_AUTOHSCROLL )
 587                   lbeStyle |= ES_AUTOHSCROLL;
 588               if( lphc->dwStyle & CBS_LOWERCASE )
 589                   lbeStyle |= ES_LOWERCASE;
 590               else if( lphc->dwStyle & CBS_UPPERCASE )
 591                   lbeStyle |= ES_UPPERCASE;
 592
 593               lphc->hWndEdit = CreateWindowExA(0,
 594                                                editName,
 595                                                NULL,
 596                                                lbeStyle,
 597                                                lphc->textRect.left, lphc->textRect.top,
 598                                                lphc->textRect.right - lphc->textRect.left,
 599                                                lphc->textRect.bottom - lphc->textRect.top,
 600                                                lphc->self->hwndSelf,
 601                                                (HMENU)ID_CB_EDIT,
 602                                                lphc->self->hInstance,
 603                                                NULL );
 604
 605               if( !lphc->hWndEdit )
 606                 bEdit = FALSE;
 607           }
 608
 609           if( bEdit )
 610           {
 611             if( CB_GETTYPE(lphc) != CBS_SIMPLE )
 612             {
 613               /* Now do the trick with parent */
 614               SetParent(lphc->hWndLBox, HWND_DESKTOP);
 615               /*
 616                * If the combo is a dropdown, we must resize the control to fit only
 617                * the text area and button. To do this, we send a dummy resize and the
 618                * WM_WINDOWPOSCHANGING message will take care of setting the height for
 619                * us.
 620                */
 621               CBForceDummyResize(lphc);
 622             }
 623
 624             TRACE("init done\n");
 625             return wnd->hwndSelf;
 626           }
 627           ERR("edit control failure.\n");
 628       } else ERR("listbox failure.\n");
 629   } else ERR("no owner for visible combo.\n");
 630
 631   /* CreateWindow() will send WM_NCDESTROY to cleanup */
 632
 633   return -1;
 634 }
 635
 636 /***********************************************************************
 637  *           CBPaintButton
 638  *
 639  * Paint combo button (normal, pressed, and disabled states).
 640  */
 641 static void CBPaintButton(
 642   LPHEADCOMBO lphc,
 643   HDC         hdc,
 644   RECT        rectButton)
 645 {
 646     if( lphc->wState & CBF_NOREDRAW )
 647       return;
 648
 649     if (TWEAK_WineLook == WIN31_LOOK)
 650     {
 651         UINT      x, y;
 652         BOOL      bBool;
 653         HDC       hMemDC;
 654         HBRUSH    hPrevBrush;
 655         COLORREF  oldTextColor, oldBkColor;
 656
 657
 658         hPrevBrush = SelectObject(hdc, GetSysColorBrush(COLOR_BTNFACE));
 659
 660         /*
 661          * Draw the button background
 662          */
 663         PatBlt( hdc,
 664                 rectButton.left,
 665                 rectButton.top,
 666                 rectButton.right-rectButton.left,
 667                 rectButton.bottom-rectButton.top,
 668                 PATCOPY );
 669
 670         if( (bBool = lphc->wState & CBF_BUTTONDOWN) )
 671         {
 672             DrawEdge( hdc, &rectButton, EDGE_SUNKEN, BF_RECT );
 673         }
 674         else
 675         {
 676             DrawEdge( hdc, &rectButton, EDGE_RAISED, BF_RECT );
 677         }
 678
 679         /*
 680          * Remove the edge of the button from the rectangle
 681          * and calculate the position of the bitmap.
 682          */
 683         InflateRect( &rectButton, -2, -2);
 684
 685         x = (rectButton.left + rectButton.right - CBitWidth) >> 1;
 686         y = (rectButton.top + rectButton.bottom - CBitHeight) >> 1;
 687
 688
 689         hMemDC = CreateCompatibleDC( hdc );
 690         SelectObject( hMemDC, hComboBmp );
 691         oldTextColor = SetTextColor( hdc, GetSysColor(COLOR_BTNFACE) );
 692         oldBkColor = SetBkColor( hdc, CB_DISABLED(lphc) ? RGB(128,128,128) :
 693                                  RGB(0,0,0) );
 694         BitBlt( hdc, x, y, CBitWidth, CBitHeight, hMemDC, 0, 0, SRCCOPY );
 695         SetBkColor( hdc, oldBkColor );
 696         SetTextColor( hdc, oldTextColor );
 697         DeleteDC( hMemDC );
 698         SelectObject( hdc, hPrevBrush );
 699     }
 700     else
 701     {
 702         UINT buttonState = DFCS_SCROLLCOMBOBOX;
 703
 704         if (lphc->wState & CBF_BUTTONDOWN)
 705         {
 706             buttonState |= DFCS_PUSHED;
 707         }
 708
 709         if (CB_DISABLED(lphc))
 710         {
 711           buttonState |= DFCS_INACTIVE;
 712         }
 713
 714         DrawFrameControl(hdc,
 715                          &rectButton,
 716                          DFC_SCROLL,
 717                          buttonState);
 718     }
 719 }
 720
 721 /***********************************************************************
 722  *           CBPaintText
 723  *
 724  * Paint CBS_DROPDOWNLIST text field / update edit control contents.
 725  */
 726 static void CBPaintText(
 727   LPHEADCOMBO lphc,
 728   HDC         hdc,
 729   RECT        rectEdit)
 730 {
 731    INT  id, size = 0;
 732    LPSTR        pText = NULL;
 733
 734    if( lphc->wState & CBF_NOREDRAW ) return;
 735
 736    /* follow Windows combobox that sends a bunch of text
 737     * inquiries to its listbox while processing WM_PAINT. */
 738
 739    if( (id = SendMessageA(lphc->hWndLBox, LB_GETCURSEL, 0, 0) ) != LB_ERR )
 740    {
 741         size = SendMessageA( lphc->hWndLBox, LB_GETTEXTLEN, id, 0);
 742         if( (pText = HeapAlloc( GetProcessHeap(), 0, size + 1)) )
 743         {
 744             SendMessageA( lphc->hWndLBox, LB_GETTEXT, (WPARAM)id, (LPARAM)pText );
 745             pText[size] = '\0'; /* just in case */
 746         } else return;
 747    }
 748
 749    if( lphc->wState & CBF_EDIT )
 750    {
 751         if( CB_HASSTRINGS(lphc) ) SetWindowTextA( lphc->hWndEdit, pText ? pText : "" );
 752         if( lphc->wState & CBF_FOCUSED )
 753             SendMessageA( lphc->hWndEdit, EM_SETSEL, 0, (LPARAM)(-1));
 754    }
 755    else /* paint text field ourselves */
 756    {
 757      UINT       itemState;
 758      HFONT      hPrevFont = (lphc->hFont) ? SelectObject(hdc, lphc->hFont) : 0;
 759
 760      /*
 761       * Give ourselves some space.
 762       */
 763      InflateRect( &rectEdit, -1, -1 );
 764
 765      if ( (lphc->wState & CBF_FOCUSED) &&
 766           !(lphc->wState & CBF_DROPPED) )
 767      {
 768        /* highlight */
 769
 770        FillRect( hdc, &rectEdit, GetSysColorBrush(COLOR_HIGHLIGHT) );
 771        SetBkColor( hdc, GetSysColor( COLOR_HIGHLIGHT ) );
 772        SetTextColor( hdc, GetSysColor( COLOR_HIGHLIGHTTEXT ) );
 773        itemState = ODS_SELECTED | ODS_FOCUS;
 774      }
 775      else
 776        itemState = 0;
 777
 778      if( CB_OWNERDRAWN(lphc) )
 779      {
 780        DRAWITEMSTRUCT dis;
 781        HRGN           clipRegion;
 782
 783        /*
 784         * Save the current clip region.
 785         * To retrieve the clip region, we need to create one "dummy"
 786         * clip region.
 787         */
 788        clipRegion = CreateRectRgnIndirect(&rectEdit);
 789
 790        if (GetClipRgn(hdc, clipRegion)!=1)
 791        {
 792          DeleteObject(clipRegion);
 793          clipRegion=(HRGN)NULL;
 794        }
 795
 796        if ( lphc->self->dwStyle & WS_DISABLED )
 797          itemState |= ODS_DISABLED;
 798
 799        dis.CtlType      = ODT_COMBOBOX;
 800        dis.CtlID        = lphc->self->wIDmenu;
 801        dis.hwndItem     = lphc->self->hwndSelf;
 802        dis.itemAction   = ODA_DRAWENTIRE;
 803        dis.itemID       = id;
 804        dis.itemState    = itemState;
 805        dis.hDC          = hdc;
 806        dis.rcItem       = rectEdit;
 807        dis.itemData     = SendMessageA( lphc->hWndLBox, LB_GETITEMDATA,
 808                                         (WPARAM)id, 0 );
 809
 810        /*
 811         * Clip the DC and have the parent draw the item.
 812         */
 813        IntersectClipRect(hdc,
 814                          rectEdit.left,  rectEdit.top,
 815                          rectEdit.right, rectEdit.bottom);
 816
 817        SendMessageA(lphc->owner, WM_DRAWITEM,
 818                     lphc->self->wIDmenu, (LPARAM)&dis );
 819
 820        /*
 821         * Reset the clipping region.
 822         */
 823        SelectClipRgn(hdc, clipRegion);
 824      }
 825      else
 826      {
 827        ExtTextOutA( hdc,
 828                     rectEdit.left + 1,
 829                     rectEdit.top + 1,
 830                     ETO_OPAQUE | ETO_CLIPPED,
 831                     &rectEdit,
 832                     pText ? pText : "" , size, NULL );
 833
 834        if(lphc->wState & CBF_FOCUSED && !(lphc->wState & CBF_DROPPED))
 835          DrawFocusRect( hdc, &rectEdit );
 836      }
 837
 838      if( hPrevFont )
 839        SelectObject(hdc, hPrevFont );
 840    }
 841    if (pText)
 842         HeapFree( GetProcessHeap(), 0, pText );
 843 }
 844
 845 /***********************************************************************
 846  *           CBPaintBorder
 847  */
 848 static void CBPaintBorder(
 849   HWND        hwnd,
 850   LPHEADCOMBO lphc,
 851   HDC         hdc)
 852 {
 853   RECT clientRect;
 854
 855   if (CB_GETTYPE(lphc) != CBS_SIMPLE)
 856   {
 857     GetClientRect(hwnd, &clientRect);
 858   }
 859   else
 860   {
 861     CopyRect(&clientRect, &lphc->textRect);
 862
 863     InflateRect(&clientRect, EDIT_CONTROL_PADDING(), EDIT_CONTROL_PADDING());
 864     InflateRect(&clientRect, COMBO_XBORDERSIZE(), COMBO_YBORDERSIZE());
 865   }
 866
 867   DrawEdge(hdc, &clientRect, EDGE_SUNKEN, BF_RECT);
 868 }
 869
 870 /***********************************************************************
 871  *           COMBO_PrepareColors
 872  *
 873  * This method will sent the appropriate WM_CTLCOLOR message to
 874  * prepare and setup the colors for the combo's DC.
 875  *
 876  * It also returns the brush to use for the background.
 877  */
 878 static HBRUSH COMBO_PrepareColors(
 879   HWND        hwnd,
 880   LPHEADCOMBO lphc,
 881   HDC         hDC)
 882 {
 883   HBRUSH  hBkgBrush;
 884
 885   /*
 886    * Get the background brush for this control.
 887    */
 888   if (CB_DISABLED(lphc))
 889   {
 890     hBkgBrush = SendMessageA( lphc->owner, WM_CTLCOLORSTATIC,
 891                               hDC, lphc->self->hwndSelf );
 892
 893     /*
 894      * We have to change the text color since WM_CTLCOLORSTATIC will
 895      * set it to the "enabled" color. This is the same behavior as the
 896      * edit control
 897      */
 898     SetTextColor(hDC, GetSysColor(COLOR_GRAYTEXT));
 899   }
 900   else
 901   {
 902     if (lphc->wState & CBF_EDIT)
 903     {
 904       hBkgBrush = SendMessageA( lphc->owner, WM_CTLCOLOREDIT,
 905                                 hDC, lphc->self->hwndSelf );
 906     }
 907     else
 908     {
 909       hBkgBrush = SendMessageA( lphc->owner, WM_CTLCOLORLISTBOX,
 910                                 hDC, lphc->self->hwndSelf );
 911     }
 912   }
 913
 914   /*
 915    * Catch errors.
 916    */
 917   if( !hBkgBrush )
 918     hBkgBrush = GetSysColorBrush(COLOR_WINDOW);
 919
 920   return hBkgBrush;
 921 }
 922
 923 /***********************************************************************
 924  *           COMBO_EraseBackground
 925  */
 926 static LRESULT COMBO_EraseBackground(
 927   HWND        hwnd,
 928   LPHEADCOMBO lphc,
 929   HDC         hParamDC)
 930 {
 931   HBRUSH  hBkgBrush;
 932   RECT    clientRect;
 933   HDC     hDC;
 934
 935   hDC = (hParamDC) ? hParamDC
 936                    : GetDC(hwnd);
 937
 938   /*
 939    * Calculate the area that we want to erase.
 940    */
 941   if (CB_GETTYPE(lphc) != CBS_SIMPLE)
 942   {
 943     GetClientRect(hwnd, &clientRect);
 944   }
 945   else
 946   {
 947     CopyRect(&clientRect, &lphc->textRect);
 948
 949     InflateRect(&clientRect, COMBO_XBORDERSIZE(), COMBO_YBORDERSIZE());
 950   }
 951
 952   /*
 953    * Retrieve the background brush
 954    */
 955   hBkgBrush = COMBO_PrepareColors(hwnd, lphc, hDC);
 956
 957   FillRect(hDC, &clientRect, hBkgBrush);
 958
 959   if (!hParamDC)
 960     ReleaseDC(hwnd, hDC);
 961
 962   return TRUE;
 963 }
 964
 965 /***********************************************************************
 966  *           COMBO_Paint
 967  */
 968 static LRESULT COMBO_Paint(LPHEADCOMBO lphc, HDC hParamDC)
 969 {
 970   PAINTSTRUCT ps;
 971   HDC   hDC;
 972
 973   hDC = (hParamDC) ? hParamDC
 974                    : BeginPaint( lphc->self->hwndSelf, &ps);
 975
 976
 977   if( hDC && !(lphc->wState & CBF_NOREDRAW) )
 978   {
 979       HBRUSH    hPrevBrush, hBkgBrush;
 980
 981       /*
 982        * Retrieve the background brush and select it in the
 983        * DC.
 984        */
 985       hBkgBrush = COMBO_PrepareColors(lphc->self->hwndSelf, lphc, hDC);
 986
 987       hPrevBrush = SelectObject( hDC, hBkgBrush );
 988
 989       /*
 990        * In non 3.1 look, there is a sunken border on the combobox
 991        */
 992       if (TWEAK_WineLook != WIN31_LOOK)
 993       {
 994         CBPaintBorder(CB_HWND(lphc), lphc, hDC);
 995       }
 996
 997       if( !IsRectEmpty(&lphc->buttonRect) )
 998       {
 999         CBPaintButton(lphc, hDC, lphc->buttonRect);
1000       }
1001
1002       if( !(lphc->wState & CBF_EDIT) )
1003       {
1004         /*
1005          * The text area has a border only in Win 3.1 look.
1006          */
1007         if (TWEAK_WineLook == WIN31_LOOK)
1008         {
1009           HPEN hPrevPen = SelectObject( hDC, GetSysColorPen(COLOR_WINDOWFRAME) );
1010
1011           Rectangle( hDC,
1012                      lphc->textRect.left, lphc->textRect.top,
1013                      lphc->textRect.right - 1, lphc->textRect.bottom - 1);
1014
1015           SelectObject( hDC, hPrevPen );
1016         }
1017
1018         CBPaintText( lphc, hDC, lphc->textRect);
1019       }
1020
1021       if( hPrevBrush )
1022         SelectObject( hDC, hPrevBrush );
1023   }
1024
1025   if( !hParamDC )
1026     EndPaint(lphc->self->hwndSelf, &ps);
1027
1028   return 0;
1029 }
1030
1031 /***********************************************************************
1032  *           CBUpdateLBox
1033  *
1034  * Select listbox entry according to the contents of the edit control.
1035  */
1036 static INT CBUpdateLBox( LPHEADCOMBO lphc, BOOL bSelect )
1037 {
1038    INT  length, idx;
1039    LPSTR        pText = NULL;
1040
1041    idx = LB_ERR;
1042    length = CB_GETEDITTEXTLENGTH( lphc );
1043
1044    if( length > 0 )
1045        pText = (LPSTR) HeapAlloc( GetProcessHeap(), 0, length + 1);
1046
1047    TRACE("\t edit text length %i\n", length );
1048
1049    if( pText )
1050    {
1051        if( length ) GetWindowTextA( lphc->hWndEdit, pText, length + 1);
1052        else pText[0] = '\0';
1053        idx = SendMessageA( lphc->hWndLBox, LB_FINDSTRING,
1054                              (WPARAM)(-1), (LPARAM)pText );
1055        HeapFree( GetProcessHeap(), 0, pText );
1056    }
1057
1058    SendMessageA( lphc->hWndLBox, LB_SETCURSEL, (WPARAM)(bSelect ? idx : -1), 0 );
1059
1060        /* probably superfluous but Windows sends this too */
1061    SendMessageA( lphc->hWndLBox, LB_SETCARETINDEX, (WPARAM)(idx < 0 ? 0 : idx), 0 );
1062    SendMessageA( lphc->hWndLBox, LB_SETTOPINDEX, (WPARAM)(idx < 0 ? 0 : idx), 0 );
1063    return idx;
1064 }
1065
1066 /***********************************************************************
1067  *           CBUpdateEdit
1068  *
1069  * Copy a listbox entry to the edit control.
1070  */
1071 static void CBUpdateEdit( LPHEADCOMBO lphc , INT index )
1072 {
1073    INT  length;
1074    LPSTR        pText = NULL;
1075
1076    TRACE("\t %i\n", index );
1077
1078    if( index >= 0 ) /* got an entry */
1079    {
1080        length = SendMessageA( lphc->hWndLBox, LB_GETTEXTLEN, (WPARAM)index, 0);
1081        if( length )
1082        {
1083            if( (pText = (LPSTR) HeapAlloc( GetProcessHeap(), 0, length + 1)) )
1084            {
1085                 SendMessageA( lphc->hWndLBox, LB_GETTEXT,
1086                                 (WPARAM)index, (LPARAM)pText );
1087            }
1088        }
1089    }
1090
1091    lphc->wState |= (CBF_NOEDITNOTIFY | CBF_NOLBSELECT);
1092    SendMessageA( lphc->hWndEdit, WM_SETTEXT, 0, pText ? (LPARAM)pText : (LPARAM)"" );
1093    lphc->wState &= ~(CBF_NOEDITNOTIFY | CBF_NOLBSELECT);
1094
1095    if( lphc->wState & CBF_FOCUSED )
1096       SendMessageA( lphc->hWndEdit, EM_SETSEL, 0, (LPARAM)(-1) );
1097
1098    if( pText )
1099        HeapFree( GetProcessHeap(), 0, pText );
1100 }
1101
1102 /***********************************************************************
1103  *           CBDropDown
1104  *
1105  * Show listbox popup.
1106  */
1107 static void CBDropDown( LPHEADCOMBO lphc )
1108 {
1109    RECT rect;
1110    int nItems = 0;
1111    int nDroppedHeight;
1112
1113    TRACE("[%04x]: drop down\n", CB_HWND(lphc));
1114
1115    CB_NOTIFY( lphc, CBN_DROPDOWN );
1116
1117    /* set selection */
1118
1119    lphc->wState |= CBF_DROPPED;
1120    if( CB_GETTYPE(lphc) == CBS_DROPDOWN )
1121    {
1122        lphc->droppedIndex = CBUpdateLBox( lphc, TRUE );
1123
1124        if( !(lphc->wState & CBF_CAPTURE) )
1125          CBUpdateEdit( lphc, lphc->droppedIndex );
1126    }
1127    else
1128    {
1129        lphc->droppedIndex = SendMessageA( lphc->hWndLBox, LB_GETCURSEL, 0, 0 );
1130
1131        SendMessageA( lphc->hWndLBox, LB_SETTOPINDEX,
1132                      (WPARAM)(lphc->droppedIndex == LB_ERR ? 0 : lphc->droppedIndex), 0 );
1133        SendMessageA( lphc->hWndLBox, LB_CARETON, 0, 0 );
1134    }
1135
1136    /* now set popup position */
1137    GetWindowRect( lphc->self->hwndSelf, &rect );
1138
1139    /*
1140     * If it's a dropdown, the listbox is offset
1141     */
1142    if( CB_GETTYPE(lphc) == CBS_DROPDOWN )
1143      rect.left += COMBO_EDITBUTTONSPACE();
1144
1145   /* if the dropped height is greater than the total height of the dropped
1146      items list, then force the drop down list height to be the total height
1147      of the items in the dropped list */
1148
1149   /* And Remove any extra space (Best Fit) */
1150    nDroppedHeight = lphc->droppedRect.bottom - lphc->droppedRect.top;
1151    nItems = (int)SendMessageA (lphc->hWndLBox, LB_GETCOUNT, 0, 0);
1152
1153    if (nItems > 0)
1154    {
1155       int nHeight;
1156
1157       nHeight = (int)SendMessageA (lphc->hWndLBox, LB_GETITEMHEIGHT, 0, 0);
1158       nHeight *= nItems;
1159
1160       if (nHeight < nDroppedHeight - COMBO_YBORDERSIZE())
1161          nDroppedHeight = nHeight + COMBO_YBORDERSIZE();
1162    }
1163
1164    /*If height of dropped rectangle gets beyond a screen size it should go up, otherwise down.*/
1165    if( (rect.bottom + nDroppedHeight) >= GetSystemMetrics( SM_CYSCREEN ) )
1166       rect.bottom = rect.top - nDroppedHeight;
1167
1168    SetWindowPos( lphc->hWndLBox, HWND_TOP, rect.left, rect.bottom,
1169                  lphc->droppedRect.right - lphc->droppedRect.left,
1170                  nDroppedHeight,
1171                  SWP_NOACTIVATE | SWP_SHOWWINDOW);
1172
1173
1174    if( !(lphc->wState & CBF_NOREDRAW) )
1175      RedrawWindow( lphc->self->hwndSelf, NULL, 0, RDW_INVALIDATE |
1176                            RDW_ERASE | RDW_UPDATENOW | RDW_NOCHILDREN );
1177
1178    EnableWindow( lphc->hWndLBox, TRUE );
1179    if (GetCapture() != lphc->self->hwndSelf)
1180       SetCapture(lphc->hWndLBox);
1181 }
1182
1183 /***********************************************************************
1184  *           CBRollUp
1185  *
1186  * Hide listbox popup.
1187  */
1188 static void CBRollUp( LPHEADCOMBO lphc, BOOL ok, BOOL bButton )
1189 {
1190    HWND hWnd = lphc->self->hwndSelf;
1191
1192    CB_NOTIFY( lphc, (ok) ? CBN_SELENDOK : CBN_SELENDCANCEL );
1193
1194    if( IsWindow( hWnd ) && CB_GETTYPE(lphc) != CBS_SIMPLE )
1195    {
1196
1197        TRACE("[%04x]: roll up [%i]\n", CB_HWND(lphc), (INT)ok );
1198
1199        if( lphc->wState & CBF_DROPPED )
1200        {
1201            RECT rect;
1202
1203            lphc->wState &= ~CBF_DROPPED;
1204            ShowWindow( lphc->hWndLBox, SW_HIDE );
1205            if(GetCapture() == lphc->hWndLBox)
1206            {
1207                ReleaseCapture();
1208            }
1209
1210            if( CB_GETTYPE(lphc) == CBS_DROPDOWN )
1211            {
1212                rect = lphc->buttonRect;
1213            }
1214            else
1215            {
1216                if( bButton )
1217                {
1218                  UnionRect( &rect,
1219                             &lphc->buttonRect,
1220                             &lphc->textRect);
1221                }
1222                else
1223                  rect = lphc->textRect;
1224
1225                bButton = TRUE;
1226            }
1227
1228            if( bButton && !(lphc->wState & CBF_NOREDRAW) )
1229                RedrawWindow( hWnd, &rect, 0, RDW_INVALIDATE |
1230                                RDW_ERASE | RDW_UPDATENOW | RDW_NOCHILDREN );
1231            CB_NOTIFY( lphc, CBN_CLOSEUP );
1232        }
1233    }
1234 }
1235
1236 /***********************************************************************
1237  *           COMBO_FlipListbox
1238  *
1239  * Used by the ComboLBox to show/hide itself in response to VK_F4, etc...
1240  */
1241 BOOL COMBO_FlipListbox( LPHEADCOMBO lphc, BOOL ok, BOOL bRedrawButton )
1242 {
1243    if( lphc->wState & CBF_DROPPED )
1244    {
1245        CBRollUp( lphc, ok, bRedrawButton );
1246        return FALSE;
1247    }
1248
1249    CBDropDown( lphc );
1250    return TRUE;
1251 }
1252
1253 /***********************************************************************
1254  *           CBRepaintButton
1255  */
1256 static void CBRepaintButton( LPHEADCOMBO lphc )
1257    {
1258   InvalidateRect(CB_HWND(lphc), &lphc->buttonRect, TRUE);
1259   UpdateWindow(CB_HWND(lphc));
1260 }
1261
1262 /***********************************************************************
1263  *           COMBO_SetFocus
1264  */
1265 static void COMBO_SetFocus( LPHEADCOMBO lphc )
1266 {
1267    if( !(lphc->wState & CBF_FOCUSED) )
1268    {
1269        if( CB_GETTYPE(lphc) == CBS_DROPDOWNLIST )
1270            SendMessageA( lphc->hWndLBox, LB_CARETON, 0, 0 );
1271
1272        lphc->wState |= CBF_FOCUSED;
1273
1274        if( !(lphc->wState & CBF_EDIT) )
1275          InvalidateRect(CB_HWND(lphc), &lphc->textRect, TRUE);
1276
1277        CB_NOTIFY( lphc, CBN_SETFOCUS );
1278    }
1279 }
1280
1281 /***********************************************************************
1282  *           COMBO_KillFocus
1283  */
1284 static void COMBO_KillFocus( LPHEADCOMBO lphc )
1285 {
1286    HWND hWnd = lphc->self->hwndSelf;
1287
1288    if( lphc->wState & CBF_FOCUSED )
1289    {
1290        CBRollUp( lphc, FALSE, TRUE );
1291        if( IsWindow( hWnd ) )
1292        {
1293            if( CB_GETTYPE(lphc) == CBS_DROPDOWNLIST )
1294                SendMessageA( lphc->hWndLBox, LB_CARETOFF, 0, 0 );
1295
1296            lphc->wState &= ~CBF_FOCUSED;
1297
1298            /* redraw text */
1299            if( !(lphc->wState & CBF_EDIT) )
1300              InvalidateRect(CB_HWND(lphc), &lphc->textRect, TRUE);
1301
1302            CB_NOTIFY( lphc, CBN_KILLFOCUS );
1303        }
1304    }
1305 }
1306
1307 /***********************************************************************
1308  *           COMBO_Command
1309  */
1310 static LRESULT COMBO_Command( LPHEADCOMBO lphc, WPARAM wParam, HWND hWnd )
1311 {
1312    if ( lphc->wState & CBF_EDIT && lphc->hWndEdit == hWnd )
1313    {
1314        /* ">> 8" makes gcc generate jump-table instead of cmp ladder */
1315
1316        switch( HIWORD(wParam) >> 8 )
1317        {
1318            case (EN_SETFOCUS >> 8):
1319
1320                 TRACE("[%04x]: edit [%04x] got focus\n",
1321                              CB_HWND(lphc), lphc->hWndEdit );
1322
1323                 COMBO_SetFocus( lphc );
1324                 break;
1325
1326            case (EN_KILLFOCUS >> 8):
1327
1328                 TRACE("[%04x]: edit [%04x] lost focus\n",
1329                              CB_HWND(lphc), lphc->hWndEdit );
1330
1331                 /* NOTE: it seems that Windows' edit control sends an
1332                  * undocumented message WM_USER + 0x1B instead of this
1333                  * notification (only when it happens to be a part of
1334                  * the combo). ?? - AK.
1335                  */
1336
1337                 COMBO_KillFocus( lphc );
1338                 break;
1339
1340
1341            case (EN_CHANGE >> 8):
1342                /*
1343                 * In some circumstances (when the selection of the combobox
1344                 * is changed for example) we don't wans the EN_CHANGE notification
1345                 * to be forwarded to the parent of the combobox. This code
1346                 * checks a flag that is set in these occasions and ignores the
1347                 * notification.
1348                 */
1349                 if (!(lphc->wState & CBF_NOEDITNOTIFY))
1350                   CB_NOTIFY( lphc, CBN_EDITCHANGE );
1351
1352                 if (lphc->wState & CBF_NOLBSELECT)
1353                 {
1354                   lphc->wState &= ~CBF_NOLBSELECT;
1355                 }
1356                 else
1357                 {
1358                   CBUpdateLBox( lphc, lphc->wState & CBF_DROPPED );
1359                 }
1360                 break;
1361
1362            case (EN_UPDATE >> 8):
1363                 if (!(lphc->wState & CBF_NOEDITNOTIFY))
1364                   CB_NOTIFY( lphc, CBN_EDITUPDATE );
1365                 break;
1366
1367            case (EN_ERRSPACE >> 8):
1368                 CB_NOTIFY( lphc, CBN_ERRSPACE );
1369        }
1370    }
1371    else if( lphc->hWndLBox == hWnd )
1372    {
1373        switch( HIWORD(wParam) )
1374        {
1375            case LBN_ERRSPACE:
1376                 CB_NOTIFY( lphc, CBN_ERRSPACE );
1377                 break;
1378
1379            case LBN_DBLCLK:
1380                 CB_NOTIFY( lphc, CBN_DBLCLK );
1381                 break;
1382
1383            case LBN_SELCHANGE:
1384            case LBN_SELCANCEL:
1385
1386                 TRACE("[%04x]: lbox selection change [%04x]\n",
1387                              CB_HWND(lphc), lphc->wState );
1388
1389                 /* do not roll up if selection is being tracked
1390                  * by arrowkeys in the dropdown listbox */
1391
1392                 if( (lphc->dwStyle & CBS_SIMPLE) ||
1393                     ((lphc->wState & CBF_DROPPED) && !(lphc->wState & CBF_NOROLLUP)) )
1394                 {
1395                    CBRollUp( lphc, (HIWORD(wParam) == LBN_SELCHANGE), TRUE );
1396                 }
1397                 else lphc->wState &= ~CBF_NOROLLUP;
1398
1399                 CB_NOTIFY( lphc, CBN_SELCHANGE );
1400
1401                 if( HIWORD(wParam) == LBN_SELCHANGE)
1402                 {
1403                    if( lphc->wState & CBF_EDIT )
1404                    {
1405                        INT index = SendMessageA(lphc->hWndLBox, LB_GETCURSEL, 0, 0);
1406                        lphc->wState |= CBF_NOLBSELECT;
1407                        CBUpdateEdit( lphc, index );
1408                        /* select text in edit, as Windows does */
1409                        SendMessageA( lphc->hWndEdit, EM_SETSEL, 0, (LPARAM)(-1) );
1410                    }
1411                    else
1412                        InvalidateRect(CB_HWND(lphc), &lphc->textRect, TRUE);
1413                 }
1414
1415                 /* fall through */
1416
1417            case LBN_SETFOCUS:
1418            case LBN_KILLFOCUS:
1419                 /* nothing to do here since ComboLBox always resets the focus to its
1420                  * combo/edit counterpart */
1421                  break;
1422        }
1423    }
1424    return 0;
1425 }
1426
1427 /***********************************************************************
1428  *           COMBO_ItemOp
1429  *
1430  * Fixup an ownerdrawn item operation and pass it up to the combobox owner.
1431  */
1432 static LRESULT COMBO_ItemOp( LPHEADCOMBO lphc, UINT msg,
1433                                WPARAM wParam, LPARAM lParam )
1434 {
1435    HWND hWnd = lphc->self->hwndSelf;
1436
1437    TRACE("[%04x]: ownerdraw op %04x\n", CB_HWND(lphc), msg );
1438
1439 #define lpIS    ((LPDELETEITEMSTRUCT)lParam)
1440
1441    /* two first items are the same in all 4 structs */
1442    lpIS->CtlType = ODT_COMBOBOX;
1443    lpIS->CtlID   = lphc->self->wIDmenu;
1444
1445    switch( msg )        /* patch window handle */
1446    {
1447         case WM_DELETEITEM:
1448              lpIS->hwndItem = hWnd;
1449 #undef  lpIS
1450              break;
1451         case WM_DRAWITEM:
1452 #define lpIS    ((LPDRAWITEMSTRUCT)lParam)
1453              lpIS->hwndItem = hWnd;
1454 #undef  lpIS
1455              break;
1456         case WM_COMPAREITEM:
1457 #define lpIS    ((LPCOMPAREITEMSTRUCT)lParam)
1458              lpIS->hwndItem = hWnd;
1459 #undef  lpIS
1460              break;
1461    }
1462
1463    return SendMessageA( lphc->owner, msg, lphc->self->wIDmenu, lParam );
1464 }
1465
1466 /***********************************************************************
1467  *           COMBO_GetText
1468  */
1469 static LRESULT COMBO_GetText( LPHEADCOMBO lphc, UINT N, LPSTR lpText)
1470 {
1471    if( lphc->wState & CBF_EDIT )
1472        return SendMessageA( lphc->hWndEdit, WM_GETTEXT,
1473                              (WPARAM)N, (LPARAM)lpText );
1474
1475    /* get it from the listbox */
1476
1477    if( lphc->hWndLBox )
1478    {
1479        INT idx = SendMessageA( lphc->hWndLBox, LB_GETCURSEL, 0, 0 );
1480        if( idx != LB_ERR )
1481        {
1482            LPSTR        lpBuffer;
1483            INT  length = SendMessageA( lphc->hWndLBox, LB_GETTEXTLEN,
1484                                                 (WPARAM)idx, 0 );
1485
1486            /* 'length' is without the terminating character */
1487            if( length >= N )
1488                lpBuffer = (LPSTR) HeapAlloc( GetProcessHeap(), 0, length + 1 );
1489            else
1490                lpBuffer = lpText;
1491
1492            if( lpBuffer )
1493            {
1494                INT    n = SendMessageA( lphc->hWndLBox, LB_GETTEXT,
1495                                            (WPARAM)idx, (LPARAM)lpBuffer );
1496
1497                /* truncate if buffer is too short */
1498
1499                if( length >= N )
1500                {
1501                    if (N && lpText) {
1502                    if( n != LB_ERR ) memcpy( lpText, lpBuffer, (N>n) ? n+1 : N-1 );
1503                    lpText[N - 1] = '\0';
1504                    }
1505                    HeapFree( GetProcessHeap(), 0, lpBuffer );
1506                }
1507                return (LRESULT)n;
1508            }
1509        }
1510    }
1511    return 0;
1512 }
1513
1514
1515 /***********************************************************************
1516  *           CBResetPos
1517  *
1518  * This function sets window positions according to the updated
1519  * component placement struct.
1520  */
1521 static void CBResetPos(
1522   LPHEADCOMBO lphc,
1523   LPRECT      rectEdit,
1524   LPRECT      rectLB,
1525   BOOL        bRedraw)
1526 {
1527    BOOL bDrop = (CB_GETTYPE(lphc) != CBS_SIMPLE);
1528
1529    /* NOTE: logs sometimes have WM_LBUTTONUP before a cascade of
1530     * sizing messages */
1531
1532    if( lphc->wState & CBF_EDIT )
1533      SetWindowPos( lphc->hWndEdit, 0,
1534                    rectEdit->left, rectEdit->top,
1535                    rectEdit->right - rectEdit->left,
1536                    rectEdit->bottom - rectEdit->top,
1537                        SWP_NOZORDER | SWP_NOACTIVATE | ((bDrop) ? SWP_NOREDRAW : 0) );
1538
1539    SetWindowPos( lphc->hWndLBox, 0,
1540                  rectLB->left, rectLB->top,
1541                  rectLB->right - rectLB->left,
1542                  rectLB->bottom - rectLB->top,
1543                    SWP_NOACTIVATE | SWP_NOZORDER | ((bDrop) ? SWP_NOREDRAW : 0) );
1544
1545    if( bDrop )
1546    {
1547        if( lphc->wState & CBF_DROPPED )
1548        {
1549            lphc->wState &= ~CBF_DROPPED;
1550            ShowWindow( lphc->hWndLBox, SW_HIDE );
1551        }
1552
1553        if( bRedraw && !(lphc->wState & CBF_NOREDRAW) )
1554            RedrawWindow( lphc->self->hwndSelf, NULL, 0,
1555                            RDW_INVALIDATE | RDW_ERASE | RDW_UPDATENOW );
1556    }
1557 }
1558
1559
1560 /***********************************************************************
1561  *           COMBO_Size
1562  */
1563 static void COMBO_Size( LPHEADCOMBO lphc )
1564   {
1565   CBCalcPlacement(lphc->self->hwndSelf,
1566                   lphc,
1567                   &lphc->textRect,
1568                   &lphc->buttonRect,
1569                   &lphc->droppedRect);
1570
1571   CBResetPos( lphc, &lphc->textRect, &lphc->droppedRect, TRUE );
1572 }
1573
1574
1575 /***********************************************************************
1576  *           COMBO_Font
1577  */
1578 static void COMBO_Font( LPHEADCOMBO lphc, HFONT hFont, BOOL bRedraw )
1579 {
1580   /*
1581    * Set the font
1582    */
1583   lphc->hFont = hFont;
1584
1585   /*
1586    * Propagate to owned windows.
1587    */
1588   if( lphc->wState & CBF_EDIT )
1589       SendMessageA( lphc->hWndEdit, WM_SETFONT, (WPARAM)hFont, bRedraw );
1590   SendMessageA( lphc->hWndLBox, WM_SETFONT, (WPARAM)hFont, bRedraw );
1591
1592   /*
1593    * Redo the layout of the control.
1594    */
1595   if ( CB_GETTYPE(lphc) == CBS_SIMPLE)
1596   {
1597     CBCalcPlacement(lphc->self->hwndSelf,
1598                     lphc,
1599                     &lphc->textRect,
1600                     &lphc->buttonRect,
1601                     &lphc->droppedRect);
1602
1603     CBResetPos( lphc, &lphc->textRect, &lphc->droppedRect, TRUE );
1604   }
1605   else
1606   {
1607     CBForceDummyResize(lphc);
1608   }
1609 }
1610
1611
1612 /***********************************************************************
1613  *           COMBO_SetItemHeight
1614  */
1615 static LRESULT COMBO_SetItemHeight( LPHEADCOMBO lphc, INT index, INT height )
1616 {
1617    LRESULT      lRet = CB_ERR;
1618
1619    if( index == -1 ) /* set text field height */
1620    {
1621        if( height < 32768 )
1622        {
1623            lphc->editHeight = height;
1624
1625          /*
1626           * Redo the layout of the control.
1627           */
1628          if ( CB_GETTYPE(lphc) == CBS_SIMPLE)
1629          {
1630            CBCalcPlacement(lphc->self->hwndSelf,
1631                            lphc,
1632                            &lphc->textRect,
1633                            &lphc->buttonRect,
1634                            &lphc->droppedRect);
1635
1636            CBResetPos( lphc, &lphc->textRect, &lphc->droppedRect, TRUE );
1637          }
1638          else
1639          {
1640            CBForceDummyResize(lphc);
1641          }
1642
1643            lRet = height;
1644        }
1645    }
1646    else if ( CB_OWNERDRAWN(lphc) )      /* set listbox item height */
1647         lRet = SendMessageA( lphc->hWndLBox, LB_SETITEMHEIGHT,
1648                               (WPARAM)index, (LPARAM)height );
1649    return lRet;
1650 }
1651
1652 /***********************************************************************
1653  *           COMBO_SelectString
1654  */
1655 static LRESULT COMBO_SelectString( LPHEADCOMBO lphc, INT start, LPCSTR pText )
1656 {
1657    INT index = SendMessageA( lphc->hWndLBox, LB_SELECTSTRING,
1658                                  (WPARAM)start, (LPARAM)pText );
1659    if( index >= 0 )
1660    {
1661      if( lphc->wState & CBF_EDIT )
1662        CBUpdateEdit( lphc, index );
1663      else
1664      {
1665        InvalidateRect(CB_HWND(lphc), &lphc->textRect, TRUE);
1666      }
1667    }
1668    return (LRESULT)index;
1669 }
1670
1671 /***********************************************************************
1672  *           COMBO_LButtonDown
1673  */
1674 static void COMBO_LButtonDown( LPHEADCOMBO lphc, LPARAM lParam )
1675 {
1676    POINT     pt;
1677    BOOL      bButton;
1678    HWND      hWnd = lphc->self->hwndSelf;
1679
1680    pt.x = LOWORD(lParam);
1681    pt.y = HIWORD(lParam);
1682    bButton = PtInRect(&lphc->buttonRect, pt);
1683
1684    if( (CB_GETTYPE(lphc) == CBS_DROPDOWNLIST) ||
1685        (bButton && (CB_GETTYPE(lphc) == CBS_DROPDOWN)) )
1686    {
1687        lphc->wState |= CBF_BUTTONDOWN;
1688        if( lphc->wState & CBF_DROPPED )
1689        {
1690            /* got a click to cancel selection */
1691
1692            lphc->wState &= ~CBF_BUTTONDOWN;
1693            CBRollUp( lphc, TRUE, FALSE );
1694            if( !IsWindow( hWnd ) ) return;
1695
1696            if( lphc->wState & CBF_CAPTURE )
1697            {
1698                lphc->wState &= ~CBF_CAPTURE;
1699                ReleaseCapture();
1700            }
1701        }
1702        else
1703        {
1704            /* drop down the listbox and start tracking */
1705
1706            lphc->wState |= CBF_CAPTURE;
1707            SetCapture( hWnd );
1708            CBDropDown( lphc );
1709        }
1710        if( bButton ) CBRepaintButton( lphc );
1711    }
1712 }
1713
1714 /***********************************************************************
1715  *           COMBO_LButtonUp
1716  *
1717  * Release capture and stop tracking if needed.
1718  */
1719 static void COMBO_LButtonUp( LPHEADCOMBO lphc, LPARAM lParam )
1720 {
1721    if( lphc->wState & CBF_CAPTURE )
1722    {
1723        lphc->wState &= ~CBF_CAPTURE;
1724        if( CB_GETTYPE(lphc) == CBS_DROPDOWN )
1725        {
1726            INT index = CBUpdateLBox( lphc, TRUE );
1727            lphc->wState |= CBF_NOLBSELECT;
1728            CBUpdateEdit( lphc, index );
1729            lphc->wState &= ~CBF_NOLBSELECT;
1730        }
1731        ReleaseCapture();
1732        SetCapture(lphc->hWndLBox);
1733
1734    }
1735
1736    if( lphc->wState & CBF_BUTTONDOWN )
1737    {
1738        lphc->wState &= ~CBF_BUTTONDOWN;
1739        CBRepaintButton( lphc );
1740    }
1741 }
1742
1743 /***********************************************************************
1744  *           COMBO_MouseMove
1745  *
1746  * Two things to do - track combo button and release capture when
1747  * pointer goes into the listbox.
1748  */
1749 static void COMBO_MouseMove( LPHEADCOMBO lphc, WPARAM wParam, LPARAM lParam )
1750 {
1751    POINT  pt;
1752    RECT   lbRect;
1753
1754    pt.x = LOWORD(lParam);
1755    pt.y = HIWORD(lParam);
1756
1757    if( lphc->wState & CBF_BUTTONDOWN )
1758    {
1759      BOOL bButton;
1760
1761      bButton = PtInRect(&lphc->buttonRect, pt);
1762
1763      if( !bButton )
1764      {
1765        lphc->wState &= ~CBF_BUTTONDOWN;
1766        CBRepaintButton( lphc );
1767      }
1768    }
1769
1770    GetClientRect( lphc->hWndLBox, &lbRect );
1771    MapWindowPoints( lphc->self->hwndSelf, lphc->hWndLBox, &pt, 1 );
1772    if( PtInRect(&lbRect, pt) )
1773    {
1774        lphc->wState &= ~CBF_CAPTURE;
1775        ReleaseCapture();
1776        if( CB_GETTYPE(lphc) == CBS_DROPDOWN ) CBUpdateLBox( lphc, TRUE );
1777
1778        /* hand over pointer tracking */
1779        SendMessageA( lphc->hWndLBox, WM_LBUTTONDOWN, wParam, lParam );
1780    }
1781 }
1782
1783
1784 /***********************************************************************
1785  *           ComboWndProc_locked
1786  *
1787  * http://www.microsoft.com/msdn/sdk/platforms/doc/sdk/win32/ctrl/src/combobox_15.htm
1788  */
1789 static inline LRESULT WINAPI ComboWndProc_locked( WND* pWnd, UINT message,
1790                              WPARAM wParam, LPARAM lParam )
1791 {
1792     if( pWnd ) {
1793       LPHEADCOMBO       lphc = CB_GETPTR(pWnd);
1794       HWND              hwnd = pWnd->hwndSelf;
1795
1796       TRACE("[%04x]: msg %s wp %08x lp %08lx\n",
1797                    pWnd->hwndSelf, SPY_GetMsgName(message), wParam, lParam );
1798
1799       if( lphc || message == WM_NCCREATE )
1800       switch(message)
1801       {
1802
1803         /* System messages */
1804
1805         case WM_NCCREATE:
1806                 return COMBO_NCCreate(pWnd, lParam);
1807         case WM_NCDESTROY:
1808                 COMBO_NCDestroy(lphc);
1809                 break;/* -> DefWindowProc */
1810
1811         case WM_CREATE:
1812                 return COMBO_Create(lphc, pWnd, lParam);
1813
1814         case WM_PRINTCLIENT:
1815                 if (lParam & PRF_ERASEBKGND)
1816                   COMBO_EraseBackground(hwnd, lphc, wParam);
1817
1818                 /* Fallthrough */
1819         case WM_PAINT:
1820                 /* wParam may contain a valid HDC! */
1821                 return  COMBO_Paint(lphc, wParam);
1822         case WM_ERASEBKGND:
1823                 return  COMBO_EraseBackground(hwnd, lphc, wParam);
1824         case WM_GETDLGCODE:
1825         {
1826                 LRESULT result = DLGC_WANTARROWS | DLGC_WANTCHARS;
1827                 if (lParam && (((LPMSG)lParam)->message == WM_KEYDOWN))
1828                 {
1829                    int vk = (int)((LPMSG)lParam)->wParam;
1830
1831                    if ((vk == VK_RETURN || vk == VK_ESCAPE) && (lphc->wState & CBF_DROPPED))
1832                        result |= DLGC_WANTMESSAGE;
1833                 }
1834                 return  result;
1835         }
1836         case WM_WINDOWPOSCHANGING:
1837                 return  COMBO_WindowPosChanging(hwnd, lphc, (LPWINDOWPOS)lParam);
1838         case WM_SIZE:
1839                 if( lphc->hWndLBox &&
1840                   !(lphc->wState & CBF_NORESIZE) ) COMBO_Size( lphc );
1841                 return  TRUE;
1842         case WM_SETFONT:
1843                 COMBO_Font( lphc, (HFONT16)wParam, (BOOL)lParam );
1844                 return  TRUE;
1845         case WM_GETFONT:
1846                 return  (LRESULT)lphc->hFont;
1847         case WM_SETFOCUS:
1848                 if( lphc->wState & CBF_EDIT )
1849                     SetFocus( lphc->hWndEdit );
1850                 else
1851                     COMBO_SetFocus( lphc );
1852                 return  TRUE;
1853         case WM_KILLFOCUS:
1854 #define hwndFocus ((HWND16)wParam)
1855                 if( !hwndFocus ||
1856                     (hwndFocus != lphc->hWndEdit && hwndFocus != lphc->hWndLBox ))
1857                     COMBO_KillFocus( lphc );
1858 #undef hwndFocus
1859                 return  TRUE;
1860         case WM_COMMAND:
1861                 return  COMBO_Command( lphc, wParam, (HWND)lParam );
1862         case WM_GETTEXT:
1863                 return  COMBO_GetText( lphc, (UINT)wParam, (LPSTR)lParam );
1864         case WM_SETTEXT:
1865         case WM_GETTEXTLENGTH:
1866         case WM_CLEAR:
1867         case WM_CUT:
1868         case WM_PASTE:
1869         case WM_COPY:
1870                 if ((message == WM_GETTEXTLENGTH) && !ISWIN31 && !(lphc->wState & CBF_EDIT))
1871                 {
1872                 int j = SendMessageA( lphc->hWndLBox, LB_GETCURSEL, 0, 0 );
1873                 if (j == -1) return 0;
1874                 return SendMessageA( lphc->hWndLBox, LB_GETTEXTLEN, j, 0);
1875                 }
1876                 else if( lphc->wState & CBF_EDIT )
1877                 {
1878                     LRESULT ret;
1879                     lphc->wState |= CBF_NOEDITNOTIFY;
1880                     ret = SendMessageA( lphc->hWndEdit, message, wParam, lParam );
1881                     lphc->wState &= ~CBF_NOEDITNOTIFY;
1882                     return ret;
1883                 }
1884                 else return  CB_ERR;
1885
1886         case WM_DRAWITEM:
1887         case WM_DELETEITEM:
1888         case WM_COMPAREITEM:
1889         case WM_MEASUREITEM:
1890                 return  COMBO_ItemOp( lphc, message, wParam, lParam );
1891         case WM_ENABLE:
1892                 if( lphc->wState & CBF_EDIT )
1893                     EnableWindow( lphc->hWndEdit, (BOOL)wParam );
1894                 EnableWindow( lphc->hWndLBox, (BOOL)wParam );
1895
1896                 /* Force the control to repaint when the enabled state changes. */
1897                 InvalidateRect(CB_HWND(lphc), NULL, TRUE);
1898                 return  TRUE;
1899         case WM_SETREDRAW:
1900                 if( wParam )
1901                     lphc->wState &= ~CBF_NOREDRAW;
1902                 else
1903                     lphc->wState |= CBF_NOREDRAW;
1904
1905                 if( lphc->wState & CBF_EDIT )
1906                     SendMessageA( lphc->hWndEdit, message, wParam, lParam );
1907                 SendMessageA( lphc->hWndLBox, message, wParam, lParam );
1908                 return  0;
1909         case WM_SYSKEYDOWN:
1910                 if( KEYDATA_ALT & HIWORD(lParam) )
1911                     if( wParam == VK_UP || wParam == VK_DOWN )
1912                         COMBO_FlipListbox( lphc, FALSE, FALSE );
1913                 return  0;
1914
1915         case WM_CHAR:
1916         case WM_KEYDOWN:
1917                 if (((CHAR)wParam == VK_RETURN || (CHAR)wParam == VK_ESCAPE) &&
1918                      (lphc->wState & CBF_DROPPED))
1919                 {
1920                    CBRollUp( lphc, (CHAR)wParam == VK_RETURN, FALSE );
1921                    return TRUE;
1922                 }
1923
1924                 if( lphc->wState & CBF_EDIT )
1925                     return  SendMessageA( lphc->hWndEdit, message, wParam, lParam );
1926                 else
1927                     return  SendMessageA( lphc->hWndLBox, message, wParam, lParam );
1928         case WM_LBUTTONDOWN:
1929                 if( !(lphc->wState & CBF_FOCUSED) ) SetFocus( lphc->self->hwndSelf );
1930                 if( lphc->wState & CBF_FOCUSED ) COMBO_LButtonDown( lphc, lParam );
1931                 return  TRUE;
1932         case WM_LBUTTONUP:
1933                 COMBO_LButtonUp( lphc, lParam );
1934                 return  TRUE;
1935         case WM_MOUSEMOVE:
1936                 if( lphc->wState & CBF_CAPTURE )
1937                     COMBO_MouseMove( lphc, wParam, lParam );
1938                 return  TRUE;
1939
1940         case WM_MOUSEWHEEL:
1941                 if (wParam & (MK_SHIFT | MK_CONTROL))
1942                     return DefWindowProcA( hwnd, message, wParam, lParam );
1943                 if ((short) HIWORD(wParam) > 0) return SendMessageA(hwnd,WM_KEYDOWN,VK_UP,0);
1944                 if ((short) HIWORD(wParam) < 0) return SendMessageA(hwnd,WM_KEYDOWN,VK_DOWN,0);
1945                 return TRUE;
1946
1947         /* Combo messages */
1948
1949         case CB_ADDSTRING16:
1950                 if( CB_HASSTRINGS(lphc) ) lParam = (LPARAM)PTR_SEG_TO_LIN(lParam);
1951         case CB_ADDSTRING:
1952                 return  SendMessageA( lphc->hWndLBox, LB_ADDSTRING, 0, lParam);
1953         case CB_INSERTSTRING16:
1954                 wParam = (INT)(INT16)wParam;
1955                 if( CB_HASSTRINGS(lphc) ) lParam = (LPARAM)PTR_SEG_TO_LIN(lParam);
1956         case CB_INSERTSTRING:
1957                 return  SendMessageA( lphc->hWndLBox, LB_INSERTSTRING, wParam, lParam);
1958         case CB_DELETESTRING16:
1959         case CB_DELETESTRING:
1960                 return  SendMessageA( lphc->hWndLBox, LB_DELETESTRING, wParam, 0);
1961         case CB_SELECTSTRING16:
1962                 wParam = (INT)(INT16)wParam;
1963                 if( CB_HASSTRINGS(lphc) ) lParam = (LPARAM)PTR_SEG_TO_LIN(lParam);
1964         case CB_SELECTSTRING:
1965                 return  COMBO_SelectString( lphc, (INT)wParam, (LPSTR)lParam );
1966         case CB_FINDSTRING16:
1967                 wParam = (INT)(INT16)wParam;
1968                 if( CB_HASSTRINGS(lphc) ) lParam = (LPARAM)PTR_SEG_TO_LIN(lParam);
1969         case CB_FINDSTRING:
1970                 return  SendMessageA( lphc->hWndLBox, LB_FINDSTRING, wParam, lParam);
1971         case CB_FINDSTRINGEXACT16:
1972                 wParam = (INT)(INT16)wParam;
1973                 if( CB_HASSTRINGS(lphc) ) lParam = (LPARAM)PTR_SEG_TO_LIN(lParam);
1974         case CB_FINDSTRINGEXACT:
1975                 return  SendMessageA( lphc->hWndLBox, LB_FINDSTRINGEXACT,
1976                                                        wParam, lParam );
1977         case CB_SETITEMHEIGHT16:
1978                 wParam = (INT)(INT16)wParam;    /* signed integer */
1979         case CB_SETITEMHEIGHT:
1980                 return  COMBO_SetItemHeight( lphc, (INT)wParam, (INT)lParam);
1981         case CB_GETITEMHEIGHT16:
1982                 wParam = (INT)(INT16)wParam;
1983         case CB_GETITEMHEIGHT:
1984                 if( (INT)wParam >= 0 )  /* listbox item */
1985                     return  SendMessageA( lphc->hWndLBox, LB_GETITEMHEIGHT, wParam, 0);
1986                 return  CBGetTextAreaHeight(hwnd, lphc);
1987         case CB_RESETCONTENT16:
1988         case CB_RESETCONTENT:
1989                 SendMessageA( lphc->hWndLBox, LB_RESETCONTENT, 0, 0 );
1990                 InvalidateRect(CB_HWND(lphc), NULL, TRUE);
1991                 return  TRUE;
1992         case CB_INITSTORAGE:
1993                 return  SendMessageA( lphc->hWndLBox, LB_INITSTORAGE, wParam, lParam);
1994         case CB_GETHORIZONTALEXTENT:
1995                 return  SendMessageA( lphc->hWndLBox, LB_GETHORIZONTALEXTENT, 0, 0);
1996         case CB_SETHORIZONTALEXTENT:
1997                 return  SendMessageA( lphc->hWndLBox, LB_SETHORIZONTALEXTENT, wParam, 0);
1998         case CB_GETTOPINDEX:
1999                 return  SendMessageA( lphc->hWndLBox, LB_GETTOPINDEX, 0, 0);
2000         case CB_GETLOCALE:
2001                 return  SendMessageA( lphc->hWndLBox, LB_GETLOCALE, 0, 0);
2002         case CB_SETLOCALE:
2003                 return  SendMessageA( lphc->hWndLBox, LB_SETLOCALE, wParam, 0);
2004         case CB_GETDROPPEDWIDTH:
2005                 if( lphc->droppedWidth )
2006                     return  lphc->droppedWidth;
2007                 return  lphc->droppedRect.right - lphc->droppedRect.left;
2008         case CB_SETDROPPEDWIDTH:
2009                 if( (CB_GETTYPE(lphc) != CBS_SIMPLE) &&
2010                     (INT)wParam < 32768 ) lphc->droppedWidth = (INT)wParam;
2011                 return  CB_ERR;
2012         case CB_GETDROPPEDCONTROLRECT16:
2013                 lParam = (LPARAM)PTR_SEG_TO_LIN(lParam);
2014                 if( lParam )
2015                 {
2016                     RECT        r;
2017                     CBGetDroppedControlRect( lphc, &r );
2018                     CONV_RECT32TO16( &r, (LPRECT16)lParam );
2019                 }
2020                 return  CB_OKAY;
2021         case CB_GETDROPPEDCONTROLRECT:
2022                 if( lParam ) CBGetDroppedControlRect(lphc, (LPRECT)lParam );
2023                 return  CB_OKAY;
2024         case CB_GETDROPPEDSTATE16:
2025         case CB_GETDROPPEDSTATE:
2026                 return  (lphc->wState & CBF_DROPPED) ? TRUE : FALSE;
2027         case CB_DIR16:
2028                 lParam = (LPARAM)PTR_SEG_TO_LIN(lParam);
2029                 /* fall through */
2030         case CB_DIR:
2031                 return  COMBO_Directory( lphc, (UINT)wParam,
2032                                        (LPSTR)lParam, (message == CB_DIR));
2033         case CB_SHOWDROPDOWN16:
2034         case CB_SHOWDROPDOWN:
2035                 if( CB_GETTYPE(lphc) != CBS_SIMPLE )
2036                 {
2037                     if( wParam )
2038                     {
2039                         if( !(lphc->wState & CBF_DROPPED) )
2040                             CBDropDown( lphc );
2041                     }
2042                     else
2043                         if( lphc->wState & CBF_DROPPED )
2044                             CBRollUp( lphc, FALSE, TRUE );
2045                 }
2046                 return  TRUE;
2047         case CB_GETCOUNT16:
2048         case CB_GETCOUNT:
2049                 return  SendMessageA( lphc->hWndLBox, LB_GETCOUNT, 0, 0);
2050         case CB_GETCURSEL16:
2051         case CB_GETCURSEL:
2052                 return  SendMessageA( lphc->hWndLBox, LB_GETCURSEL, 0, 0);
2053         case CB_SETCURSEL16:
2054                 wParam = (INT)(INT16)wParam;
2055         case CB_SETCURSEL:
2056                 lParam = SendMessageA( lphc->hWndLBox, LB_SETCURSEL, wParam, 0);
2057                 if( lParam >= 0 )
2058                     SendMessageA( lphc->hWndLBox, LB_SETTOPINDEX, wParam, 0);
2059                 if( lphc->wState & CBF_SELCHANGE )
2060                 {
2061                     /* no LBN_SELCHANGE in this case, update manually */
2062                     if( lphc->wState & CBF_EDIT )
2063                         CBUpdateEdit( lphc, (INT)wParam );
2064                     else
2065                         InvalidateRect(CB_HWND(lphc), &lphc->textRect, TRUE);
2066                     lphc->wState &= ~CBF_SELCHANGE;
2067                 }
2068                 return  lParam;
2069         case CB_GETLBTEXT16:
2070                 wParam = (INT)(INT16)wParam;
2071                 lParam = (LPARAM)PTR_SEG_TO_LIN(lParam);
2072         case CB_GETLBTEXT:
2073                 return  SendMessageA( lphc->hWndLBox, LB_GETTEXT, wParam, lParam);
2074         case CB_GETLBTEXTLEN16:
2075                 wParam = (INT)(INT16)wParam;
2076         case CB_GETLBTEXTLEN:
2077                 return  SendMessageA( lphc->hWndLBox, LB_GETTEXTLEN, wParam, 0);
2078         case CB_GETITEMDATA16:
2079                 wParam = (INT)(INT16)wParam;
2080         case CB_GETITEMDATA:
2081                 return  SendMessageA( lphc->hWndLBox, LB_GETITEMDATA, wParam, 0);
2082         case CB_SETITEMDATA16:
2083                 wParam = (INT)(INT16)wParam;
2084         case CB_SETITEMDATA:
2085                 return  SendMessageA( lphc->hWndLBox, LB_SETITEMDATA, wParam, lParam);
2086         case CB_GETEDITSEL16:
2087                 wParam = lParam = 0;   /* just in case */
2088         case CB_GETEDITSEL:
2089                 if( lphc->wState & CBF_EDIT )
2090                 {
2091                     INT a, b;
2092
2093                     return  SendMessageA( lphc->hWndEdit, EM_GETSEL,
2094                                            (wParam) ? wParam : (WPARAM)&a,
2095                                            (lParam) ? lParam : (LPARAM)&b );
2096                 }
2097                 return  CB_ERR;
2098         case CB_SETEDITSEL16:
2099         case CB_SETEDITSEL:
2100                 if( lphc->wState & CBF_EDIT )
2101                     return  SendMessageA( lphc->hWndEdit, EM_SETSEL,
2102                           (INT)(INT16)LOWORD(lParam), (INT)(INT16)HIWORD(lParam) );
2103                 return  CB_ERR;
2104         case CB_SETEXTENDEDUI16:
2105         case CB_SETEXTENDEDUI:
2106                 if( CB_GETTYPE(lphc) == CBS_SIMPLE )
2107                     return  CB_ERR;
2108                 if( wParam )
2109                     lphc->wState |= CBF_EUI;
2110                 else lphc->wState &= ~CBF_EUI;
2111                 return  CB_OKAY;
2112         case CB_GETEXTENDEDUI16:
2113         case CB_GETEXTENDEDUI:
2114                 return  (lphc->wState & CBF_EUI) ? TRUE : FALSE;
2115
2116         default:
2117                 if (message >= WM_USER)
2118                     WARN("unknown msg WM_USER+%04x wp=%04x lp=%08lx\n",
2119                         message - WM_USER, wParam, lParam );
2120                 break;
2121     }
2122     return DefWindowProcA(hwnd, message, wParam, lParam);
2123   }
2124   return CB_ERR;
2125 }
2126
2127 /***********************************************************************
2128  *           ComboWndProc
2129  *
2130  * This is just a wrapper for the real ComboWndProc which locks/unlocks
2131  * window structs.
2132  */
2133 LRESULT WINAPI ComboWndProc( HWND hwnd, UINT message,
2134                              WPARAM wParam, LPARAM lParam )
2135 {
2136     WND*        pWnd = WIN_FindWndPtr(hwnd);
2137     LRESULT retvalue = ComboWndProc_locked(pWnd,message,wParam,lParam);
2138
2139
2140     WIN_ReleaseWndPtr(pWnd);
2141     return retvalue;
2142 }
2143