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