dlls/user32/defwnd.c

   1 /*
   2  * Default window procedure
   3  *
   4  * Copyright 1993, 1996 Alexandre Julliard
   5  *           1995 Alex Korobka
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  20  */
  21
  22 #include "config.h"
  23 #include "wine/port.h"
  24
  25 #include <string.h>
  26 #include <stdarg.h>
  27
  28 #include "windef.h"
  29 #include "winbase.h"
  30 #include "wingdi.h"
  31 #include "winnls.h"
  32 #include "win.h"
  33 #include "user_private.h"
  34 #include "controls.h"
  35 #include "wine/unicode.h"
  36 #include "wine/server.h"
  37 #include "wine/exception.h"
  38 #include "wine/debug.h"
  39
  40 WINE_DEFAULT_DEBUG_CHANNEL(win);
  41
  42   /* bits in the dwKeyData */
  43 #define KEYDATA_ALT             0x2000
  44 #define KEYDATA_PREVSTATE       0x4000
  45
  46 #define DRAG_FILE  0x454C4946
  47
  48 static short iF10Key = 0;
  49 static short iMenuSysKey = 0;
  50 static const WCHAR imm32W[] = { 'i','m','m','3','2','\0' };
  51
  52 /***********************************************************************
  53  *           DEFWND_HandleWindowPosChanged
  54  *
  55  * Handle the WM_WINDOWPOSCHANGED message.
  56  */
  57 static void DEFWND_HandleWindowPosChanged( HWND hwnd, const WINDOWPOS *winpos )
  58 {
  59     RECT rect;
  60     WND *wndPtr = WIN_GetPtr( hwnd );
  61
  62     rect = wndPtr->rectClient;
  63     WIN_ReleasePtr( wndPtr );
  64
  65     if (!(winpos->flags & SWP_NOCLIENTMOVE))
  66         SendMessageW( hwnd, WM_MOVE, 0, MAKELONG(rect.left, rect.top));
  67
  68     if (!(winpos->flags & SWP_NOCLIENTSIZE) || (winpos->flags & SWP_STATECHANGED))
  69     {
  70         if (IsIconic( hwnd ))
  71         {
  72             SendMessageW( hwnd, WM_SIZE, SIZE_MINIMIZED, 0 );
  73         }
  74         else
  75         {
  76             WPARAM wp = IsZoomed( hwnd ) ? SIZE_MAXIMIZED : SIZE_RESTORED;
  77
  78             SendMessageW( hwnd, WM_SIZE, wp, MAKELONG(rect.right-rect.left, rect.bottom-rect.top) );
  79         }
  80     }
  81 }
  82
  83
  84 /***********************************************************************
  85  *           DEFWND_SetTextA
  86  *
  87  * Set the window text.
  88  */
  89 static void DEFWND_SetTextA( HWND hwnd, LPCSTR text )
  90 {
  91     int count;
  92     WCHAR *textW;
  93     WND *wndPtr;
  94
  95     if (!text) text = "";
  96     count = MultiByteToWideChar( CP_ACP, 0, text, -1, NULL, 0 );
  97
  98     if (!(wndPtr = WIN_GetPtr( hwnd ))) return;
  99     if ((textW = HeapAlloc(GetProcessHeap(), 0, count * sizeof(WCHAR))))
 100     {
 101         HeapFree(GetProcessHeap(), 0, wndPtr->text);
 102         wndPtr->text = textW;
 103         MultiByteToWideChar( CP_ACP, 0, text, -1, textW, count );
 104         SERVER_START_REQ( set_window_text )
 105         {
 106             req->handle = wine_server_user_handle( hwnd );
 107             wine_server_add_data( req, textW, (count-1) * sizeof(WCHAR) );
 108             wine_server_call( req );
 109         }
 110         SERVER_END_REQ;
 111     }
 112     else
 113         ERR("Not enough memory for window text\n");
 114     WIN_ReleasePtr( wndPtr );
 115
 116     USER_Driver->pSetWindowText( hwnd, textW );
 117 }
 118
 119 /***********************************************************************
 120  *           DEFWND_SetTextW
 121  *
 122  * Set the window text.
 123  */
 124 static void DEFWND_SetTextW( HWND hwnd, LPCWSTR text )
 125 {
 126     static const WCHAR empty_string[] = {0};
 127     WND *wndPtr;
 128     int count;
 129
 130     if (!text) text = empty_string;
 131     count = strlenW(text) + 1;
 132
 133     if (!(wndPtr = WIN_GetPtr( hwnd ))) return;
 134     HeapFree(GetProcessHeap(), 0, wndPtr->text);
 135     if ((wndPtr->text = HeapAlloc(GetProcessHeap(), 0, count * sizeof(WCHAR))))
 136     {
 137         strcpyW( wndPtr->text, text );
 138         SERVER_START_REQ( set_window_text )
 139         {
 140             req->handle = wine_server_user_handle( hwnd );
 141             wine_server_add_data( req, wndPtr->text, (count-1) * sizeof(WCHAR) );
 142             wine_server_call( req );
 143         }
 144         SERVER_END_REQ;
 145     }
 146     else
 147         ERR("Not enough memory for window text\n");
 148     text = wndPtr->text;
 149     WIN_ReleasePtr( wndPtr );
 150
 151     USER_Driver->pSetWindowText( hwnd, text );
 152 }
 153
 154 /***********************************************************************
 155  *           DEFWND_ControlColor
 156  *
 157  * Default colors for control painting.
 158  */
 159 HBRUSH DEFWND_ControlColor( HDC hDC, UINT ctlType )
 160 {
 161     if( ctlType == CTLCOLOR_SCROLLBAR)
 162     {
 163         HBRUSH hb = GetSysColorBrush(COLOR_SCROLLBAR);
 164         COLORREF bk = GetSysColor(COLOR_3DHILIGHT);
 165         SetTextColor( hDC, GetSysColor(COLOR_3DFACE));
 166         SetBkColor( hDC, bk);
 167
 168         /* if COLOR_WINDOW happens to be the same as COLOR_3DHILIGHT
 169          * we better use 0x55aa bitmap brush to make scrollbar's background
 170          * look different from the window background.
 171          */
 172         if (bk == GetSysColor(COLOR_WINDOW))
 173             return SYSCOLOR_55AABrush;
 174
 175         UnrealizeObject( hb );
 176         return hb;
 177     }
 178
 179     SetTextColor( hDC, GetSysColor(COLOR_WINDOWTEXT));
 180
 181     if ((ctlType == CTLCOLOR_EDIT) || (ctlType == CTLCOLOR_LISTBOX))
 182         SetBkColor( hDC, GetSysColor(COLOR_WINDOW) );
 183     else {
 184         SetBkColor( hDC, GetSysColor(COLOR_3DFACE) );
 185         return GetSysColorBrush(COLOR_3DFACE);
 186     }
 187     return GetSysColorBrush(COLOR_WINDOW);
 188 }
 189
 190
 191 /***********************************************************************
 192  *           DEFWND_Print
 193  *
 194  * This method handles the default behavior for the WM_PRINT message.
 195  */
 196 static void DEFWND_Print( HWND hwnd, HDC hdc, ULONG uFlags)
 197 {
 198   /*
 199    * Visibility flag.
 200    */
 201   if ( (uFlags & PRF_CHECKVISIBLE) &&
 202        !IsWindowVisible(hwnd) )
 203       return;
 204
 205   /*
 206    * Unimplemented flags.
 207    */
 208   if ( (uFlags & PRF_CHILDREN) ||
 209        (uFlags & PRF_OWNED)    ||
 210        (uFlags & PRF_NONCLIENT) )
 211   {
 212     WARN("WM_PRINT message with unsupported flags\n");
 213   }
 214
 215   /*
 216    * Background
 217    */
 218   if ( uFlags & PRF_ERASEBKGND)
 219     SendMessageW(hwnd, WM_ERASEBKGND, (WPARAM)hdc, 0);
 220
 221   /*
 222    * Client area
 223    */
 224   if ( uFlags & PRF_CLIENT)
 225     SendMessageW(hwnd, WM_PRINTCLIENT, (WPARAM)hdc, uFlags);
 226 }
 227
 228
 229 /*
 230  * helpers for calling IMM32
 231  *
 232  * WM_IME_* messages are generated only by IMM32,
 233  * so I assume imm32 is already LoadLibrary-ed.
 234  */
 235 static HWND DEFWND_ImmGetDefaultIMEWnd( HWND hwnd )
 236 {
 237     HINSTANCE hInstIMM = GetModuleHandleW( imm32W );
 238     HWND (WINAPI *pFunc)(HWND);
 239     HWND hwndRet = 0;
 240
 241     if (!hInstIMM)
 242     {
 243         ERR( "cannot get IMM32 handle\n" );
 244         return 0;
 245     }
 246
 247     pFunc = (void*)GetProcAddress(hInstIMM,"ImmGetDefaultIMEWnd");
 248     if ( pFunc != NULL )
 249         hwndRet = (*pFunc)( hwnd );
 250
 251     return hwndRet;
 252 }
 253
 254 static BOOL DEFWND_ImmIsUIMessageA( HWND hwndIME, UINT msg, WPARAM wParam, LPARAM lParam )
 255 {
 256     HINSTANCE hInstIMM = GetModuleHandleW( imm32W );
 257     BOOL (WINAPI *pFunc)(HWND,UINT,WPARAM,LPARAM);
 258     BOOL fRet = FALSE;
 259
 260     if (!hInstIMM)
 261     {
 262         ERR( "cannot get IMM32 handle\n" );
 263         return FALSE;
 264     }
 265
 266     pFunc = (void*)GetProcAddress(hInstIMM,"ImmIsUIMessageA");
 267     if ( pFunc != NULL )
 268         fRet = (*pFunc)( hwndIME, msg, wParam, lParam );
 269
 270     return fRet;
 271 }
 272
 273 static BOOL DEFWND_ImmIsUIMessageW( HWND hwndIME, UINT msg, WPARAM wParam, LPARAM lParam )
 274 {
 275     HINSTANCE hInstIMM = GetModuleHandleW( imm32W );
 276     BOOL (WINAPI *pFunc)(HWND,UINT,WPARAM,LPARAM);
 277     BOOL fRet = FALSE;
 278
 279     if (!hInstIMM)
 280     {
 281         ERR( "cannot get IMM32 handle\n" );
 282         return FALSE;
 283     }
 284
 285     pFunc = (void*)GetProcAddress(hInstIMM,"ImmIsUIMessageW");
 286     if ( pFunc != NULL )
 287         fRet = (*pFunc)( hwndIME, msg, wParam, lParam );
 288
 289     return fRet;
 290 }
 291
 292
 293
 294 /***********************************************************************
 295  *           DEFWND_DefWinProc
 296  *
 297  * Default window procedure for messages that are the same in Ansi and Unicode.
 298  */
 299 static LRESULT DEFWND_DefWinProc( HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam )
 300 {
 301     switch(msg)
 302     {
 303     case WM_NCPAINT:
 304         return NC_HandleNCPaint( hwnd, (HRGN)wParam );
 305
 306     case WM_NCHITTEST:
 307         {
 308             POINT pt;
 309             pt.x = (short)LOWORD(lParam);
 310             pt.y = (short)HIWORD(lParam);
 311             return NC_HandleNCHitTest( hwnd, pt );
 312         }
 313
 314     case WM_NCCALCSIZE:
 315         return NC_HandleNCCalcSize( hwnd, (RECT *)lParam );
 316
 317     case WM_WINDOWPOSCHANGING:
 318         return WINPOS_HandleWindowPosChanging( hwnd, (WINDOWPOS *)lParam );
 319
 320     case WM_WINDOWPOSCHANGED:
 321         DEFWND_HandleWindowPosChanged( hwnd, (const WINDOWPOS *)lParam );
 322         break;
 323
 324     case WM_LBUTTONDOWN:
 325     case WM_RBUTTONDOWN:
 326     case WM_MBUTTONDOWN:
 327         iF10Key = iMenuSysKey = 0;
 328         break;
 329
 330     case WM_NCLBUTTONDOWN:
 331         return NC_HandleNCLButtonDown( hwnd, wParam, lParam );
 332
 333     case WM_LBUTTONDBLCLK:
 334         return NC_HandleNCLButtonDblClk( hwnd, HTCLIENT, lParam );
 335
 336     case WM_NCLBUTTONDBLCLK:
 337         return NC_HandleNCLButtonDblClk( hwnd, wParam, lParam );
 338
 339     case WM_NCRBUTTONDOWN:
 340         /* in Windows, capture is taken when right-clicking on the caption bar */
 341         if (wParam==HTCAPTION)
 342         {
 343             SetCapture(hwnd);
 344         }
 345         break;
 346
 347     case WM_RBUTTONUP:
 348         {
 349             POINT pt;
 350
 351             if (hwnd == GetCapture())
 352                 /* release capture if we took it on WM_NCRBUTTONDOWN */
 353                 ReleaseCapture();
 354
 355             pt.x = (short)LOWORD(lParam);
 356             pt.y = (short)HIWORD(lParam);
 357             ClientToScreen(hwnd, &pt);
 358             SendMessageW( hwnd, WM_CONTEXTMENU, (WPARAM)hwnd, MAKELPARAM(pt.x, pt.y) );
 359         }
 360         break;
 361
 362     case WM_NCRBUTTONUP:
 363         /*
 364          * FIXME : we must NOT send WM_CONTEXTMENU on a WM_NCRBUTTONUP (checked
 365          * in Windows), but what _should_ we do? According to MSDN :
 366          * "If it is appropriate to do so, the system sends the WM_SYSCOMMAND
 367          * message to the window". When is it appropriate?
 368          */
 369         break;
 370
 371     case WM_CONTEXTMENU:
 372         if (GetWindowLongW( hwnd, GWL_STYLE ) & WS_CHILD)
 373             SendMessageW( GetParent(hwnd), msg, wParam, lParam );
 374         else
 375         {
 376             LONG hitcode;
 377             POINT pt;
 378             WND *wndPtr = WIN_GetPtr( hwnd );
 379             HMENU hMenu = wndPtr->hSysMenu;
 380             WIN_ReleasePtr( wndPtr );
 381             if (!hMenu) return 0;
 382             pt.x = (short)LOWORD(lParam);
 383             pt.y = (short)HIWORD(lParam);
 384             hitcode = NC_HandleNCHitTest(hwnd, pt);
 385
 386             /* Track system popup if click was in the caption area. */
 387             if (hitcode==HTCAPTION || hitcode==HTSYSMENU)
 388                TrackPopupMenu(GetSystemMenu(hwnd, FALSE),
 389                                TPM_LEFTBUTTON | TPM_RIGHTBUTTON,
 390                                pt.x, pt.y, 0, hwnd, NULL);
 391         }
 392         break;
 393
 394     case WM_POPUPSYSTEMMENU:
 395         {
 396             /* This is an undocumented message used by the windows taskbar to
 397                display the system menu of windows that belong to other processes. */
 398             HMENU menu = GetSystemMenu(hwnd, FALSE);
 399
 400             if (menu)
 401                 TrackPopupMenu(menu, TPM_LEFTBUTTON|TPM_RIGHTBUTTON,
 402                                LOWORD(lParam), HIWORD(lParam), 0, hwnd, NULL);
 403             return 0;
 404         }
 405
 406     case WM_NCACTIVATE:
 407         return NC_HandleNCActivate( hwnd, wParam, lParam );
 408
 409     case WM_NCDESTROY:
 410         {
 411             WND *wndPtr = WIN_GetPtr( hwnd );
 412             if (!wndPtr) return 0;
 413             HeapFree( GetProcessHeap(), 0, wndPtr->text );
 414             wndPtr->text = NULL;
 415             HeapFree( GetProcessHeap(), 0, wndPtr->pScroll );
 416             wndPtr->pScroll = NULL;
 417             WIN_ReleasePtr( wndPtr );
 418             return 0;
 419         }
 420
 421     case WM_PRINT:
 422         DEFWND_Print(hwnd, (HDC)wParam, lParam);
 423         return 0;
 424
 425     case WM_PAINTICON:
 426     case WM_PAINT:
 427         {
 428             PAINTSTRUCT ps;
 429             HDC hdc = BeginPaint( hwnd, &ps );
 430             if( hdc )
 431             {
 432               HICON hIcon;
 433               if (IsIconic(hwnd) && ((hIcon = (HICON)GetClassLongPtrW( hwnd, GCLP_HICON))) )
 434               {
 435                   RECT rc;
 436                   int x, y;
 437
 438                   GetClientRect( hwnd, &rc );
 439                   x = (rc.right - rc.left - GetSystemMetrics(SM_CXICON))/2;
 440                   y = (rc.bottom - rc.top - GetSystemMetrics(SM_CYICON))/2;
 441                   TRACE("Painting class icon: vis rect=(%s)\n",
 442                         wine_dbgstr_rect(&ps.rcPaint));
 443                   DrawIcon( hdc, x, y, hIcon );
 444               }
 445               EndPaint( hwnd, &ps );
 446             }
 447             return 0;
 448         }
 449
 450     case WM_SYNCPAINT:
 451         RedrawWindow ( hwnd, NULL, 0, RDW_ERASENOW | RDW_ERASE | RDW_ALLCHILDREN );
 452         return 0;
 453
 454     case WM_SETREDRAW:
 455         if (wParam) WIN_SetStyle( hwnd, WS_VISIBLE, 0 );
 456         else
 457         {
 458             RedrawWindow( hwnd, NULL, 0, RDW_ALLCHILDREN | RDW_VALIDATE );
 459             WIN_SetStyle( hwnd, 0, WS_VISIBLE );
 460         }
 461         return 0;
 462
 463     case WM_CLOSE:
 464         DestroyWindow( hwnd );
 465         return 0;
 466
 467     case WM_MOUSEACTIVATE:
 468         if (GetWindowLongW( hwnd, GWL_STYLE ) & WS_CHILD)
 469         {
 470             LONG ret = SendMessageW( GetParent(hwnd), WM_MOUSEACTIVATE, wParam, lParam );
 471             if (ret) return ret;
 472         }
 473
 474         /* Caption clicks are handled by NC_HandleNCLButtonDown() */
 475         return MA_ACTIVATE;
 476
 477     case WM_ACTIVATE:
 478         /* The default action in Windows is to set the keyboard focus to
 479          * the window, if it's being activated and not minimized */
 480         if (LOWORD(wParam) != WA_INACTIVE) {
 481             if (!IsIconic(hwnd)) SetFocus(hwnd);
 482         }
 483         break;
 484
 485     case WM_MOUSEWHEEL:
 486         if (GetWindowLongW( hwnd, GWL_STYLE ) & WS_CHILD)
 487             return SendMessageW( GetParent(hwnd), WM_MOUSEWHEEL, wParam, lParam );
 488         break;
 489
 490     case WM_ERASEBKGND:
 491     case WM_ICONERASEBKGND:
 492         {
 493             RECT rect;
 494             HDC hdc = (HDC)wParam;
 495             HBRUSH hbr = (HBRUSH)GetClassLongPtrW( hwnd, GCLP_HBRBACKGROUND );
 496             if (!hbr) return 0;
 497
 498             if (GetClassLongW( hwnd, GCL_STYLE ) & CS_PARENTDC)
 499             {
 500                 /* can't use GetClipBox with a parent DC or we fill the whole parent */
 501                 GetClientRect( hwnd, &rect );
 502                 DPtoLP( hdc, (LPPOINT)&rect, 2 );
 503             }
 504             else GetClipBox( hdc, &rect );
 505             FillRect( hdc, &rect, hbr );
 506             return 1;
 507         }
 508
 509     case WM_GETDLGCODE:
 510         return 0;
 511
 512     case WM_CTLCOLORMSGBOX:
 513     case WM_CTLCOLOREDIT:
 514     case WM_CTLCOLORLISTBOX:
 515     case WM_CTLCOLORBTN:
 516     case WM_CTLCOLORDLG:
 517     case WM_CTLCOLORSTATIC:
 518     case WM_CTLCOLORSCROLLBAR:
 519         return (LRESULT)DEFWND_ControlColor( (HDC)wParam, msg - WM_CTLCOLORMSGBOX );
 520
 521     case WM_CTLCOLOR:
 522         return (LRESULT)DEFWND_ControlColor( (HDC)wParam, HIWORD(lParam) );
 523
 524     case WM_SETCURSOR:
 525         if (GetWindowLongW( hwnd, GWL_STYLE ) & WS_CHILD)
 526         {
 527             /* with the exception of the border around a resizable wnd,
 528              * give the parent first chance to set the cursor */
 529             if ((LOWORD(lParam) < HTSIZEFIRST) || (LOWORD(lParam) > HTSIZELAST))
 530             {
 531                 if (SendMessageW(GetParent(hwnd), WM_SETCURSOR, wParam, lParam)) return TRUE;
 532             }
 533         }
 534         NC_HandleSetCursor( hwnd, wParam, lParam );
 535         break;
 536
 537     case WM_SYSCOMMAND:
 538         return NC_HandleSysCommand( hwnd, wParam, lParam );
 539
 540     case WM_KEYDOWN:
 541         if(wParam == VK_F10) iF10Key = VK_F10;
 542         break;
 543
 544     case WM_SYSKEYDOWN:
 545         if( HIWORD(lParam) & KEYDATA_ALT )
 546         {
 547             /* if( HIWORD(lParam) & ~KEYDATA_PREVSTATE ) */
 548               if ( (wParam == VK_MENU || wParam == VK_LMENU
 549                     || wParam == VK_RMENU) && !iMenuSysKey )
 550                 iMenuSysKey = 1;
 551               else
 552                 iMenuSysKey = 0;
 553
 554             iF10Key = 0;
 555
 556             if( wParam == VK_F4 )       /* try to close the window */
 557             {
 558                 HWND top = GetAncestor( hwnd, GA_ROOT );
 559                 if (!(GetClassLongW( top, GCL_STYLE ) & CS_NOCLOSE))
 560                     PostMessageW( top, WM_SYSCOMMAND, SC_CLOSE, 0 );
 561             }
 562         }
 563         else if( wParam == VK_F10 )
 564         {
 565             if (GetKeyState(VK_SHIFT) & 0x8000)
 566                 SendMessageW( hwnd, WM_CONTEXTMENU, (WPARAM)hwnd, -1 );
 567             iF10Key = 1;
 568         }
 569         else if( wParam == VK_ESCAPE && (GetKeyState(VK_SHIFT) & 0x8000))
 570             SendMessageW( hwnd, WM_SYSCOMMAND, SC_KEYMENU, ' ' );
 571         break;
 572
 573     case WM_KEYUP:
 574     case WM_SYSKEYUP:
 575         /* Press and release F10 or ALT */
 576         if (((wParam == VK_MENU || wParam == VK_LMENU || wParam == VK_RMENU)
 577              && iMenuSysKey) || ((wParam == VK_F10) && iF10Key))
 578               SendMessageW( GetAncestor( hwnd, GA_ROOT ), WM_SYSCOMMAND, SC_KEYMENU, 0L );
 579         iMenuSysKey = iF10Key = 0;
 580         break;
 581
 582     case WM_SYSCHAR:
 583     {
 584         iMenuSysKey = 0;
 585         if (wParam == '\r' && IsIconic(hwnd))
 586         {
 587             PostMessageW( hwnd, WM_SYSCOMMAND, SC_RESTORE, 0L );
 588             break;
 589         }
 590         if ((HIWORD(lParam) & KEYDATA_ALT) && wParam)
 591         {
 592             if (wParam == '\t' || wParam == '\x1b') break;
 593             if (wParam == ' ' && (GetWindowLongW( hwnd, GWL_STYLE ) & WS_CHILD))
 594                 SendMessageW( GetParent(hwnd), msg, wParam, lParam );
 595             else
 596                 SendMessageW( hwnd, WM_SYSCOMMAND, SC_KEYMENU, wParam );
 597         }
 598         else /* check for Ctrl-Esc */
 599             if (wParam != '\x1b') MessageBeep(0);
 600         break;
 601     }
 602
 603     case WM_SHOWWINDOW:
 604         {
 605             LONG style = GetWindowLongW( hwnd, GWL_STYLE );
 606             WND *pWnd;
 607             if (!lParam) return 0; /* sent from ShowWindow */
 608             if ((style & WS_VISIBLE) && wParam) return 0;
 609             if (!(style & WS_VISIBLE) && !wParam) return 0;
 610             if (!GetWindow( hwnd, GW_OWNER )) return 0;
 611             if (!(pWnd = WIN_GetPtr( hwnd ))) return 0;
 612             if (pWnd == WND_OTHER_PROCESS) return 0;
 613             if (wParam)
 614             {
 615                 if (!(pWnd->flags & WIN_NEEDS_SHOW_OWNEDPOPUP))
 616                 {
 617                     WIN_ReleasePtr( pWnd );
 618                     return 0;
 619                 }
 620                 pWnd->flags &= ~WIN_NEEDS_SHOW_OWNEDPOPUP;
 621             }
 622             else pWnd->flags |= WIN_NEEDS_SHOW_OWNEDPOPUP;
 623             WIN_ReleasePtr( pWnd );
 624             ShowWindow( hwnd, wParam ? SW_SHOWNOACTIVATE : SW_HIDE );
 625             break;
 626         }
 627
 628     case WM_CANCELMODE:
 629         iMenuSysKey = 0;
 630         MENU_EndMenu( hwnd );
 631         if (GetCapture() == hwnd) ReleaseCapture();
 632         break;
 633
 634     case WM_VKEYTOITEM:
 635     case WM_CHARTOITEM:
 636         return -1;
 637
 638     case WM_DROPOBJECT:
 639         return DRAG_FILE;
 640
 641     case WM_QUERYDROPOBJECT:
 642         return (GetWindowLongA( hwnd, GWL_EXSTYLE ) & WS_EX_ACCEPTFILES) != 0;
 643
 644     case WM_QUERYDRAGICON:
 645         {
 646             UINT len;
 647
 648             HICON hIcon = (HICON)GetClassLongPtrW( hwnd, GCLP_HICON );
 649             HINSTANCE instance = (HINSTANCE)GetWindowLongPtrW( hwnd, GWLP_HINSTANCE );
 650             if (hIcon) return (LRESULT)hIcon;
 651             for(len=1; len<64; len++)
 652                 if((hIcon = LoadIconW(instance, MAKEINTRESOURCEW(len))))
 653                     return (LRESULT)hIcon;
 654             return (LRESULT)LoadIconW(0, (LPWSTR)IDI_APPLICATION);
 655         }
 656         break;
 657
 658     case WM_ISACTIVEICON:
 659         {
 660             WND *wndPtr = WIN_GetPtr( hwnd );
 661             BOOL ret = (wndPtr->flags & WIN_NCACTIVATED) != 0;
 662             WIN_ReleasePtr( wndPtr );
 663             return ret;
 664         }
 665
 666     case WM_NOTIFYFORMAT:
 667       if (IsWindowUnicode(hwnd)) return NFR_UNICODE;
 668       else return NFR_ANSI;
 669
 670     case WM_QUERYOPEN:
 671     case WM_QUERYENDSESSION:
 672         return 1;
 673
 674     case WM_SETICON:
 675         {
 676             HICON ret;
 677             WND *wndPtr = WIN_GetPtr( hwnd );
 678
 679             switch(wParam)
 680             {
 681             case ICON_SMALL:
 682                 ret = wndPtr->hIconSmall;
 683                 wndPtr->hIconSmall = (HICON)lParam;
 684                 break;
 685             case ICON_BIG:
 686                 ret = wndPtr->hIcon;
 687                 wndPtr->hIcon = (HICON)lParam;
 688                 break;
 689             default:
 690                 ret = 0;
 691                 break;
 692             }
 693             WIN_ReleasePtr( wndPtr );
 694
 695             USER_Driver->pSetWindowIcon( hwnd, wParam, (HICON)lParam );
 696
 697             if( (GetWindowLongW( hwnd, GWL_STYLE ) & WS_CAPTION) == WS_CAPTION )
 698                 NC_HandleNCPaint( hwnd , (HRGN)1 );  /* Repaint caption */
 699
 700             return (LRESULT)ret;
 701         }
 702
 703     case WM_GETICON:
 704         {
 705             HICON ret;
 706             WND *wndPtr = WIN_GetPtr( hwnd );
 707
 708             switch(wParam)
 709             {
 710             case ICON_SMALL:
 711                 ret = wndPtr->hIconSmall;
 712                 break;
 713             case ICON_BIG:
 714                 ret = wndPtr->hIcon;
 715                 break;
 716             case ICON_SMALL2:
 717                 ret = wndPtr->hIconSmall;
 718                 if (!ret) ret = (HICON)GetClassLongPtrW( hwnd, GCLP_HICONSM );
 719                 /* FIXME: should have a default here if class icon is null */
 720                 break;
 721             default:
 722                 ret = 0;
 723                 break;
 724             }
 725             WIN_ReleasePtr( wndPtr );
 726             return (LRESULT)ret;
 727         }
 728
 729     case WM_HELP:
 730         SendMessageW( GetParent(hwnd), msg, wParam, lParam );
 731         break;
 732
 733     case WM_APPCOMMAND:
 734         {
 735             HWND parent = GetParent(hwnd);
 736             if(!parent)
 737                 HOOK_CallHooks(WH_SHELL, HSHELL_APPCOMMAND, wParam, lParam, TRUE);
 738             else
 739                 SendMessageW( parent, msg, wParam, lParam );
 740             break;
 741         }
 742     case WM_KEYF1:
 743         {
 744             HELPINFO hi;
 745
 746             hi.cbSize = sizeof(HELPINFO);
 747             GetCursorPos( &hi.MousePos );
 748             if (MENU_IsMenuActive())
 749             {
 750                 hi.iContextType = HELPINFO_MENUITEM;
 751                 hi.hItemHandle = MENU_IsMenuActive();
 752                 hi.iCtrlId = MenuItemFromPoint( hwnd, hi.hItemHandle, hi.MousePos );
 753                 hi.dwContextId = GetMenuContextHelpId( hi.hItemHandle );
 754             }
 755             else
 756             {
 757                 hi.iContextType = HELPINFO_WINDOW;
 758                 hi.hItemHandle = hwnd;
 759                 hi.iCtrlId = GetWindowLongPtrA( hwnd, GWLP_ID );
 760                 hi.dwContextId = GetWindowContextHelpId( hwnd );
 761             }
 762             SendMessageW( hwnd, WM_HELP, 0, (LPARAM)&hi );
 763             break;
 764         }
 765
 766     case WM_INPUTLANGCHANGEREQUEST:
 767         ActivateKeyboardLayout( (HKL)lParam, 0 );
 768         break;
 769
 770     case WM_INPUTLANGCHANGE:
 771         {
 772             int count = 0;
 773             HWND *win_array = WIN_ListChildren( hwnd );
 774
 775             if (!win_array)
 776                 break;
 777             while (win_array[count])
 778                 SendMessageW( win_array[count++], WM_INPUTLANGCHANGE, wParam, lParam);
 779             HeapFree(GetProcessHeap(),0,win_array);
 780             break;
 781         }
 782
 783     }
 784
 785     return 0;
 786 }
 787
 788 static LPARAM DEFWND_GetTextA( WND *wndPtr, LPSTR dest, WPARAM wParam )
 789 {
 790     LPARAM result = 0;
 791
 792     __TRY
 793     {
 794         if (wndPtr->text)
 795         {
 796             if (!WideCharToMultiByte( CP_ACP, 0, wndPtr->text, -1,
 797                                       dest, wParam, NULL, NULL )) dest[wParam-1] = 0;
 798             result = strlen( dest );
 799         }
 800         else dest[0] = '\0';
 801     }
 802     __EXCEPT_PAGE_FAULT
 803     {
 804         return 0;
 805     }
 806     __ENDTRY
 807     return result;
 808 }
 809
 810 /***********************************************************************
 811  *              DefWindowProcA (USER32.@)
 812  *
 813  * See DefWindowProcW.
 814  */
 815 LRESULT WINAPI DefWindowProcA( HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam )
 816 {
 817     LRESULT result = 0;
 818     HWND full_handle;
 819
 820     if (!(full_handle = WIN_IsCurrentProcess( hwnd )))
 821     {
 822         if (!IsWindow( hwnd )) return 0;
 823         ERR( "called for other process window %p\n", hwnd );
 824         return 0;
 825     }
 826     hwnd = full_handle;
 827
 828     SPY_EnterMessage( SPY_DEFWNDPROC, hwnd, msg, wParam, lParam );
 829
 830     switch(msg)
 831     {
 832     case WM_NCCREATE:
 833         if (lParam)
 834         {
 835             CREATESTRUCTA *cs = (CREATESTRUCTA *)lParam;
 836             /* check for string, as static icons, bitmaps (SS_ICON, SS_BITMAP)
 837              * may have child window IDs instead of window name */
 838             if (HIWORD(cs->lpszName))
 839                 DEFWND_SetTextA( hwnd, cs->lpszName );
 840             result = 1;
 841         }
 842         break;
 843
 844     case WM_GETTEXTLENGTH:
 845         {
 846             WND *wndPtr = WIN_GetPtr( hwnd );
 847             if (wndPtr && wndPtr->text)
 848                 result = WideCharToMultiByte( CP_ACP, 0, wndPtr->text, strlenW(wndPtr->text),
 849                                               NULL, 0, NULL, NULL );
 850             WIN_ReleasePtr( wndPtr );
 851         }
 852         break;
 853
 854     case WM_GETTEXT:
 855         if (wParam)
 856         {
 857             LPSTR dest = (LPSTR)lParam;
 858             WND *wndPtr = WIN_GetPtr( hwnd );
 859
 860             if (!wndPtr) break;
 861             result = DEFWND_GetTextA( wndPtr, dest, wParam );
 862
 863             WIN_ReleasePtr( wndPtr );
 864         }
 865         break;
 866
 867     case WM_SETTEXT:
 868         DEFWND_SetTextA( hwnd, (LPCSTR)lParam );
 869         if( (GetWindowLongW( hwnd, GWL_STYLE ) & WS_CAPTION) == WS_CAPTION )
 870             NC_HandleNCPaint( hwnd , (HRGN)1 );  /* Repaint caption */
 871         result = 1; /* success. FIXME: check text length */
 872         break;
 873
 874     case WM_IME_CHAR:
 875         if (HIBYTE(wParam)) PostMessageA( hwnd, WM_CHAR, HIBYTE(wParam), lParam );
 876         PostMessageA( hwnd, WM_CHAR, LOBYTE(wParam), lParam );
 877         break;
 878
 879     case WM_IME_KEYDOWN:
 880         result = PostMessageA( hwnd, WM_KEYDOWN, wParam, lParam );
 881         break;
 882
 883     case WM_IME_KEYUP:
 884         result = PostMessageA( hwnd, WM_KEYUP, wParam, lParam );
 885         break;
 886
 887     case WM_IME_STARTCOMPOSITION:
 888     case WM_IME_COMPOSITION:
 889     case WM_IME_ENDCOMPOSITION:
 890     case WM_IME_SELECT:
 891     case WM_IME_NOTIFY:
 892         {
 893             HWND hwndIME;
 894
 895             hwndIME = DEFWND_ImmGetDefaultIMEWnd( hwnd );
 896             if (hwndIME)
 897                 result = SendMessageA( hwndIME, msg, wParam, lParam );
 898         }
 899         break;
 900     case WM_IME_SETCONTEXT:
 901         {
 902             HWND hwndIME;
 903
 904             hwndIME = DEFWND_ImmGetDefaultIMEWnd( hwnd );
 905             if (hwndIME)
 906                 result = DEFWND_ImmIsUIMessageA( hwndIME, msg, wParam, lParam );
 907         }
 908         break;
 909
 910     case WM_SYSCHAR:
 911     {
 912         CHAR ch = LOWORD(wParam);
 913         WCHAR wch;
 914         MultiByteToWideChar(CP_ACP, 0, &ch, 1, &wch, 1);
 915         wParam = MAKEWPARAM( wch, HIWORD(wParam) );
 916     }
 917     /* fall through */
 918     default:
 919         result = DEFWND_DefWinProc( hwnd, msg, wParam, lParam );
 920         break;
 921     }
 922
 923     SPY_ExitMessage( SPY_RESULT_DEFWND, hwnd, msg, result, wParam, lParam );
 924     return result;
 925 }
 926
 927
 928 static LPARAM DEFWND_GetTextW( WND *wndPtr, LPWSTR dest, WPARAM wParam )
 929 {
 930     LPARAM result = 0;
 931
 932     __TRY
 933     {
 934         if (wndPtr->text)
 935         {
 936             lstrcpynW( dest, wndPtr->text, wParam );
 937             result = strlenW( dest );
 938         }
 939         else dest[0] = '\0';
 940     }
 941     __EXCEPT_PAGE_FAULT
 942     {
 943         return 0;
 944     }
 945     __ENDTRY
 946
 947     return result;
 948 }
 949
 950 /***********************************************************************
 951  *              DefWindowProcW (USER32.@) Calls default window message handler
 952  *
 953  * Calls default window procedure for messages not processed
 954  *  by application.
 955  *
 956  *  RETURNS
 957  *     Return value is dependent upon the message.
 958 */
 959 LRESULT WINAPI DefWindowProcW(
 960     HWND hwnd,      /* [in] window procedure receiving message */
 961     UINT msg,       /* [in] message identifier */
 962     WPARAM wParam,  /* [in] first message parameter */
 963     LPARAM lParam )   /* [in] second message parameter */
 964 {
 965     LRESULT result = 0;
 966     HWND full_handle;
 967
 968     if (!(full_handle = WIN_IsCurrentProcess( hwnd )))
 969     {
 970         if (!IsWindow( hwnd )) return 0;
 971         ERR( "called for other process window %p\n", hwnd );
 972         return 0;
 973     }
 974     hwnd = full_handle;
 975     SPY_EnterMessage( SPY_DEFWNDPROC, hwnd, msg, wParam, lParam );
 976
 977     switch(msg)
 978     {
 979     case WM_NCCREATE:
 980         if (lParam)
 981         {
 982             CREATESTRUCTW *cs = (CREATESTRUCTW *)lParam;
 983             /* check for string, as static icons, bitmaps (SS_ICON, SS_BITMAP)
 984              * may have child window IDs instead of window name */
 985             if (HIWORD(cs->lpszName))
 986                 DEFWND_SetTextW( hwnd, cs->lpszName );
 987             result = 1;
 988         }
 989         break;
 990
 991     case WM_GETTEXTLENGTH:
 992         {
 993             WND *wndPtr = WIN_GetPtr( hwnd );
 994             if (wndPtr && wndPtr->text) result = (LRESULT)strlenW(wndPtr->text);
 995             WIN_ReleasePtr( wndPtr );
 996         }
 997         break;
 998
 999     case WM_GETTEXT:
1000         if (wParam)
1001         {
1002             LPWSTR dest = (LPWSTR)lParam;
1003             WND *wndPtr = WIN_GetPtr( hwnd );
1004
1005             if (!wndPtr) break;
1006             result = DEFWND_GetTextW( wndPtr, dest, wParam );
1007             WIN_ReleasePtr( wndPtr );
1008         }
1009         break;
1010
1011     case WM_SETTEXT:
1012         DEFWND_SetTextW( hwnd, (LPCWSTR)lParam );
1013         if( (GetWindowLongW( hwnd, GWL_STYLE ) & WS_CAPTION) == WS_CAPTION )
1014             NC_HandleNCPaint( hwnd , (HRGN)1 );  /* Repaint caption */
1015         result = 1; /* success. FIXME: check text length */
1016         break;
1017
1018     case WM_IME_CHAR:
1019         PostMessageW( hwnd, WM_CHAR, wParam, lParam );
1020         break;
1021
1022     case WM_IME_KEYDOWN:
1023         result = PostMessageW( hwnd, WM_KEYDOWN, wParam, lParam );
1024         break;
1025
1026     case WM_IME_KEYUP:
1027         result = PostMessageW( hwnd, WM_KEYUP, wParam, lParam );
1028         break;
1029
1030     case WM_IME_SETCONTEXT:
1031         {
1032             HWND hwndIME;
1033
1034             hwndIME = DEFWND_ImmGetDefaultIMEWnd( hwnd );
1035             if (hwndIME)
1036                 result = DEFWND_ImmIsUIMessageW( hwndIME, msg, wParam, lParam );
1037         }
1038         break;
1039
1040     case WM_IME_STARTCOMPOSITION:
1041     case WM_IME_COMPOSITION:
1042     case WM_IME_ENDCOMPOSITION:
1043     case WM_IME_SELECT:
1044     case WM_IME_NOTIFY:
1045         {
1046             HWND hwndIME;
1047
1048             hwndIME = DEFWND_ImmGetDefaultIMEWnd( hwnd );
1049             if (hwndIME)
1050                 result = SendMessageW( hwndIME, msg, wParam, lParam );
1051         }
1052         break;
1053
1054     default:
1055         result = DEFWND_DefWinProc( hwnd, msg, wParam, lParam );
1056         break;
1057     }
1058     SPY_ExitMessage( SPY_RESULT_DEFWND, hwnd, msg, result, wParam, lParam );
1059     return result;
1060 }