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/winuser16.h"
  37 #include "wine/server.h"
  38 #include "wine/exception.h"
  39 #include "wine/debug.h"
  40
  41 WINE_DEFAULT_DEBUG_CHANNEL(win);
  42
  43   /* bits in the dwKeyData */
  44 #define KEYDATA_ALT             0x2000
  45 #define KEYDATA_PREVSTATE       0x4000
  46
  47 static short iF10Key = 0;
  48 static short iMenuSysKey = 0;
  49 static const WCHAR imm32W[] = { 'i','m','m','3','2','\0' };
  50
  51 /***********************************************************************
  52  *           DEFWND_HandleWindowPosChanged
  53  *
  54  * Handle the WM_WINDOWPOSCHANGED message.
  55  */
  56 static void DEFWND_HandleWindowPosChanged( HWND hwnd, const WINDOWPOS *winpos )
  57 {
  58     RECT rect;
  59     WND *wndPtr = WIN_GetPtr( hwnd );
  60
  61     rect = wndPtr->rectClient;
  62     WIN_ReleasePtr( wndPtr );
  63
  64     if (!(winpos->flags & SWP_NOCLIENTMOVE))
  65         SendMessageW( hwnd, WM_MOVE, 0, MAKELONG(rect.left, rect.top));
  66
  67     if (!(winpos->flags & SWP_NOCLIENTSIZE) || (winpos->flags & SWP_STATECHANGED))
  68     {
  69         WPARAM wp = SIZE_RESTORED;
  70         if (IsZoomed(hwnd)) wp = SIZE_MAXIMIZED;
  71         else if (IsIconic(hwnd)) wp = SIZE_MINIMIZED;
  72
  73         SendMessageW( hwnd, WM_SIZE, wp, MAKELONG(rect.right-rect.left, rect.bottom-rect.top) );
  74     }
  75 }
  76
  77
  78 /***********************************************************************
  79  *           DEFWND_SetTextA
  80  *
  81  * Set the window text.
  82  */
  83 static void DEFWND_SetTextA( HWND hwnd, LPCSTR text )
  84 {
  85     int count;
  86     WCHAR *textW;
  87     WND *wndPtr;
  88
  89     if (!text) text = "";
  90     count = MultiByteToWideChar( CP_ACP, 0, text, -1, NULL, 0 );
  91
  92     if (!(wndPtr = WIN_GetPtr( hwnd ))) return;
  93     if ((textW = HeapAlloc(GetProcessHeap(), 0, count * sizeof(WCHAR))))
  94     {
  95         HeapFree(GetProcessHeap(), 0, wndPtr->text);
  96         wndPtr->text = textW;
  97         MultiByteToWideChar( CP_ACP, 0, text, -1, textW, count );
  98         SERVER_START_REQ( set_window_text )
  99         {
 100             req->handle = wine_server_user_handle( hwnd );
 101             wine_server_add_data( req, textW, (count-1) * sizeof(WCHAR) );
 102             wine_server_call( req );
 103         }
 104         SERVER_END_REQ;
 105     }
 106     else
 107         ERR("Not enough memory for window text\n");
 108     WIN_ReleasePtr( wndPtr );
 109
 110     USER_Driver->pSetWindowText( hwnd, textW );
 111 }
 112
 113 /***********************************************************************
 114  *           DEFWND_SetTextW
 115  *
 116  * Set the window text.
 117  */
 118 static void DEFWND_SetTextW( HWND hwnd, LPCWSTR text )
 119 {
 120     static const WCHAR empty_string[] = {0};
 121     WND *wndPtr;
 122     int count;
 123
 124     if (!text) text = empty_string;
 125     count = strlenW(text) + 1;
 126
 127     if (!(wndPtr = WIN_GetPtr( hwnd ))) return;
 128     HeapFree(GetProcessHeap(), 0, wndPtr->text);
 129     if ((wndPtr->text = HeapAlloc(GetProcessHeap(), 0, count * sizeof(WCHAR))))
 130     {
 131         strcpyW( wndPtr->text, text );
 132         SERVER_START_REQ( set_window_text )
 133         {
 134             req->handle = wine_server_user_handle( hwnd );
 135             wine_server_add_data( req, wndPtr->text, (count-1) * sizeof(WCHAR) );
 136             wine_server_call( req );
 137         }
 138         SERVER_END_REQ;
 139     }
 140     else
 141         ERR("Not enough memory for window text\n");
 142     text = wndPtr->text;
 143     WIN_ReleasePtr( wndPtr );
 144
 145     USER_Driver->pSetWindowText( hwnd, text );
 146 }
 147
 148 /***********************************************************************
 149  *           DEFWND_ControlColor
 150  *
 151  * Default colors for control painting.
 152  */
 153 HBRUSH DEFWND_ControlColor( HDC hDC, UINT ctlType )
 154 {
 155     if( ctlType == CTLCOLOR_SCROLLBAR)
 156     {
 157         HBRUSH hb = GetSysColorBrush(COLOR_SCROLLBAR);
 158         COLORREF bk = GetSysColor(COLOR_3DHILIGHT);
 159         SetTextColor( hDC, GetSysColor(COLOR_3DFACE));
 160         SetBkColor( hDC, bk);
 161
 162         /* if COLOR_WINDOW happens to be the same as COLOR_3DHILIGHT
 163          * we better use 0x55aa bitmap brush to make scrollbar's background
 164          * look different from the window background.
 165          */
 166         if (bk == GetSysColor(COLOR_WINDOW))
 167             return SYSCOLOR_55AABrush;
 168
 169         UnrealizeObject( hb );
 170         return hb;
 171     }
 172
 173     SetTextColor( hDC, GetSysColor(COLOR_WINDOWTEXT));
 174
 175     if ((ctlType == CTLCOLOR_EDIT) || (ctlType == CTLCOLOR_LISTBOX))
 176         SetBkColor( hDC, GetSysColor(COLOR_WINDOW) );
 177     else {
 178         SetBkColor( hDC, GetSysColor(COLOR_3DFACE) );
 179         return GetSysColorBrush(COLOR_3DFACE);
 180     }
 181     return GetSysColorBrush(COLOR_WINDOW);
 182 }
 183
 184
 185 /***********************************************************************
 186  *           DEFWND_Print
 187  *
 188  * This method handles the default behavior for the WM_PRINT message.
 189  */
 190 static void DEFWND_Print( HWND hwnd, HDC hdc, ULONG uFlags)
 191 {
 192   /*
 193    * Visibility flag.
 194    */
 195   if ( (uFlags & PRF_CHECKVISIBLE) &&
 196        !IsWindowVisible(hwnd) )
 197       return;
 198
 199   /*
 200    * Unimplemented flags.
 201    */
 202   if ( (uFlags & PRF_CHILDREN) ||
 203        (uFlags & PRF_OWNED)    ||
 204        (uFlags & PRF_NONCLIENT) )
 205   {
 206     WARN("WM_PRINT message with unsupported flags\n");
 207   }
 208
 209   /*
 210    * Background
 211    */
 212   if ( uFlags & PRF_ERASEBKGND)
 213     SendMessageW(hwnd, WM_ERASEBKGND, (WPARAM)hdc, 0);
 214
 215   /*
 216    * Client area
 217    */
 218   if ( uFlags & PRF_CLIENT)
 219     SendMessageW(hwnd, WM_PRINTCLIENT, (WPARAM)hdc, PRF_CLIENT);
 220 }
 221
 222
 223 /*
 224  * helpers for calling IMM32
 225  *
 226  * WM_IME_* messages are generated only by IMM32,
 227  * so I assume imm32 is already LoadLibrary-ed.
 228  */
 229 static HWND DEFWND_ImmGetDefaultIMEWnd( HWND hwnd )
 230 {
 231     HINSTANCE hInstIMM = GetModuleHandleW( imm32W );
 232     HWND (WINAPI *pFunc)(HWND);
 233     HWND hwndRet = 0;
 234
 235     if (!hInstIMM)
 236     {
 237         ERR( "cannot get IMM32 handle\n" );
 238         return 0;
 239     }
 240
 241     pFunc = (void*)GetProcAddress(hInstIMM,"ImmGetDefaultIMEWnd");
 242     if ( pFunc != NULL )
 243         hwndRet = (*pFunc)( hwnd );
 244
 245     return hwndRet;
 246 }
 247
 248 static BOOL DEFWND_ImmIsUIMessageA( HWND hwndIME, UINT msg, WPARAM wParam, LPARAM lParam )
 249 {
 250     HINSTANCE hInstIMM = GetModuleHandleW( imm32W );
 251     BOOL (WINAPI *pFunc)(HWND,UINT,WPARAM,LPARAM);
 252     BOOL fRet = FALSE;
 253
 254     if (!hInstIMM)
 255     {
 256         ERR( "cannot get IMM32 handle\n" );
 257         return FALSE;
 258     }
 259
 260     pFunc = (void*)GetProcAddress(hInstIMM,"ImmIsUIMessageA");
 261     if ( pFunc != NULL )
 262         fRet = (*pFunc)( hwndIME, msg, wParam, lParam );
 263
 264     return fRet;
 265 }
 266
 267 static BOOL DEFWND_ImmIsUIMessageW( HWND hwndIME, UINT msg, WPARAM wParam, LPARAM lParam )
 268 {
 269     HINSTANCE hInstIMM = GetModuleHandleW( imm32W );
 270     BOOL (WINAPI *pFunc)(HWND,UINT,WPARAM,LPARAM);
 271     BOOL fRet = FALSE;
 272
 273     if (!hInstIMM)
 274     {
 275         ERR( "cannot get IMM32 handle\n" );
 276         return FALSE;
 277     }
 278
 279     pFunc = (void*)GetProcAddress(hInstIMM,"ImmIsUIMessageW");
 280     if ( pFunc != NULL )
 281         fRet = (*pFunc)( hwndIME, msg, wParam, lParam );
 282
 283     return fRet;
 284 }
 285
 286
 287
 288 /***********************************************************************
 289  *           DEFWND_DefWinProc
 290  *
 291  * Default window procedure for messages that are the same in Ansi and Unicode.
 292  */
 293 static LRESULT DEFWND_DefWinProc( HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam )
 294 {
 295     switch(msg)
 296     {
 297     case WM_NCPAINT:
 298         return NC_HandleNCPaint( hwnd, (HRGN)wParam );
 299
 300     case WM_NCHITTEST:
 301         {
 302             POINT pt;
 303             pt.x = (short)LOWORD(lParam);
 304             pt.y = (short)HIWORD(lParam);
 305             return NC_HandleNCHitTest( hwnd, pt );
 306         }
 307
 308     case WM_NCCALCSIZE:
 309         return NC_HandleNCCalcSize( hwnd, (RECT *)lParam );
 310
 311     case WM_WINDOWPOSCHANGING:
 312         return WINPOS_HandleWindowPosChanging( hwnd, (WINDOWPOS *)lParam );
 313
 314     case WM_WINDOWPOSCHANGED:
 315         DEFWND_HandleWindowPosChanged( hwnd, (const WINDOWPOS *)lParam );
 316         break;
 317
 318     case WM_LBUTTONDOWN:
 319     case WM_RBUTTONDOWN:
 320     case WM_MBUTTONDOWN:
 321         iF10Key = iMenuSysKey = 0;
 322         break;
 323
 324     case WM_NCLBUTTONDOWN:
 325         return NC_HandleNCLButtonDown( hwnd, wParam, lParam );
 326
 327     case WM_LBUTTONDBLCLK:
 328         return NC_HandleNCLButtonDblClk( hwnd, HTCLIENT, lParam );
 329
 330     case WM_NCLBUTTONDBLCLK:
 331         return NC_HandleNCLButtonDblClk( hwnd, wParam, lParam );
 332
 333     case WM_NCRBUTTONDOWN:
 334         /* in Windows, capture is taken when right-clicking on the caption bar */
 335         if (wParam==HTCAPTION)
 336         {
 337             SetCapture(hwnd);
 338         }
 339         break;
 340
 341     case WM_RBUTTONUP:
 342         {
 343             POINT pt;
 344
 345             if (hwnd == GetCapture())
 346                 /* release capture if we took it on WM_NCRBUTTONDOWN */
 347                 ReleaseCapture();
 348
 349             pt.x = (short)LOWORD(lParam);
 350             pt.y = (short)HIWORD(lParam);
 351             ClientToScreen(hwnd, &pt);
 352             SendMessageW( hwnd, WM_CONTEXTMENU, (WPARAM)hwnd, MAKELPARAM(pt.x, pt.y) );
 353         }
 354         break;
 355
 356     case WM_NCRBUTTONUP:
 357         /*
 358          * FIXME : we must NOT send WM_CONTEXTMENU on a WM_NCRBUTTONUP (checked
 359          * in Windows), but what _should_ we do? According to MSDN :
 360          * "If it is appropriate to do so, the system sends the WM_SYSCOMMAND
 361          * message to the window". When is it appropriate?
 362          */
 363         break;
 364
 365     case WM_CONTEXTMENU:
 366         if (GetWindowLongW( hwnd, GWL_STYLE ) & WS_CHILD)
 367             SendMessageW( GetParent(hwnd), msg, wParam, lParam );
 368         else
 369         {
 370             LONG hitcode;
 371             POINT pt;
 372             WND *wndPtr = WIN_GetPtr( hwnd );
 373             HMENU hMenu = wndPtr->hSysMenu;
 374             WIN_ReleasePtr( wndPtr );
 375             if (!hMenu) return 0;
 376             pt.x = (short)LOWORD(lParam);
 377             pt.y = (short)HIWORD(lParam);
 378             hitcode = NC_HandleNCHitTest(hwnd, pt);
 379
 380             /* Track system popup if click was in the caption area. */
 381             if (hitcode==HTCAPTION || hitcode==HTSYSMENU)
 382                TrackPopupMenu(GetSystemMenu(hwnd, FALSE),
 383                                TPM_LEFTBUTTON | TPM_RIGHTBUTTON,
 384                                pt.x, pt.y, 0, hwnd, NULL);
 385         }
 386         break;
 387
 388     case WM_POPUPSYSTEMMENU:
 389         {
 390             /* This is an undocumented message used by the windows taskbar to
 391                display the system menu of windows that belong to other processes. */
 392             HMENU menu = GetSystemMenu(hwnd, FALSE);
 393
 394             if (menu)
 395                 TrackPopupMenu(menu, TPM_LEFTBUTTON|TPM_RIGHTBUTTON,
 396                                LOWORD(lParam), HIWORD(lParam), 0, hwnd, NULL);
 397             return 0;
 398         }
 399
 400     case WM_NCACTIVATE:
 401         return NC_HandleNCActivate( hwnd, wParam, lParam );
 402
 403     case WM_NCDESTROY:
 404         {
 405             WND *wndPtr = WIN_GetPtr( hwnd );
 406             if (!wndPtr) return 0;
 407             HeapFree( GetProcessHeap(), 0, wndPtr->text );
 408             wndPtr->text = NULL;
 409             HeapFree( GetProcessHeap(), 0, wndPtr->pVScroll );
 410             HeapFree( GetProcessHeap(), 0, wndPtr->pHScroll );
 411             wndPtr->pVScroll = wndPtr->pHScroll = NULL;
 412             WIN_ReleasePtr( wndPtr );
 413             return 0;
 414         }
 415
 416     case WM_PRINT:
 417         DEFWND_Print(hwnd, (HDC)wParam, lParam);
 418         return 0;
 419
 420     case WM_PAINTICON:
 421     case WM_PAINT:
 422         {
 423             PAINTSTRUCT ps;
 424             HDC hdc = BeginPaint( hwnd, &ps );
 425             if( hdc )
 426             {
 427               HICON hIcon;
 428               if (IsIconic(hwnd) && ((hIcon = (HICON)GetClassLongPtrW( hwnd, GCLP_HICON))) )
 429               {
 430                   RECT rc;
 431                   int x, y;
 432
 433                   GetClientRect( hwnd, &rc );
 434                   x = (rc.right - rc.left - GetSystemMetrics(SM_CXICON))/2;
 435                   y = (rc.bottom - rc.top - GetSystemMetrics(SM_CYICON))/2;
 436                   TRACE("Painting class icon: vis rect=(%s)\n",
 437                         wine_dbgstr_rect(&ps.rcPaint));
 438                   DrawIcon( hdc, x, y, hIcon );
 439               }
 440               EndPaint( hwnd, &ps );
 441             }
 442             return 0;
 443         }
 444
 445     case WM_SYNCPAINT:
 446         RedrawWindow ( hwnd, NULL, 0, RDW_ERASENOW | RDW_ERASE | RDW_ALLCHILDREN );
 447         return 0;
 448
 449     case WM_SETREDRAW:
 450         if (wParam) WIN_SetStyle( hwnd, WS_VISIBLE, 0 );
 451         else
 452         {
 453             RedrawWindow( hwnd, NULL, 0, RDW_ALLCHILDREN | RDW_VALIDATE );
 454             WIN_SetStyle( hwnd, 0, WS_VISIBLE );
 455         }
 456         return 0;
 457
 458     case WM_CLOSE:
 459         DestroyWindow( hwnd );
 460         return 0;
 461
 462     case WM_MOUSEACTIVATE:
 463         if (GetWindowLongW( hwnd, GWL_STYLE ) & WS_CHILD)
 464         {
 465             LONG ret = SendMessageW( GetParent(hwnd), WM_MOUSEACTIVATE, wParam, lParam );
 466             if (ret) return ret;
 467         }
 468
 469         /* Caption clicks are handled by NC_HandleNCLButtonDown() */
 470         return MA_ACTIVATE;
 471
 472     case WM_ACTIVATE:
 473         /* The default action in Windows is to set the keyboard focus to
 474          * the window, if it's being activated and not minimized */
 475         if (LOWORD(wParam) != WA_INACTIVE) {
 476             if (!IsIconic(hwnd)) SetFocus(hwnd);
 477         }
 478         break;
 479
 480     case WM_MOUSEWHEEL:
 481         if (GetWindowLongW( hwnd, GWL_STYLE ) & WS_CHILD)
 482             return SendMessageW( GetParent(hwnd), WM_MOUSEWHEEL, wParam, lParam );
 483         break;
 484
 485     case WM_ERASEBKGND:
 486     case WM_ICONERASEBKGND:
 487         {
 488             RECT rect;
 489             HDC hdc = (HDC)wParam;
 490             HBRUSH hbr = (HBRUSH)GetClassLongPtrW( hwnd, GCLP_HBRBACKGROUND );
 491             if (!hbr) return 0;
 492
 493             if (GetClassLongW( hwnd, GCL_STYLE ) & CS_PARENTDC)
 494             {
 495                 /* can't use GetClipBox with a parent DC or we fill the whole parent */
 496                 GetClientRect( hwnd, &rect );
 497                 DPtoLP( hdc, (LPPOINT)&rect, 2 );
 498             }
 499             else GetClipBox( hdc, &rect );
 500             FillRect( hdc, &rect, hbr );
 501             return 1;
 502         }
 503
 504     case WM_GETDLGCODE:
 505         return 0;
 506
 507     case WM_CTLCOLORMSGBOX:
 508     case WM_CTLCOLOREDIT:
 509     case WM_CTLCOLORLISTBOX:
 510     case WM_CTLCOLORBTN:
 511     case WM_CTLCOLORDLG:
 512     case WM_CTLCOLORSTATIC:
 513     case WM_CTLCOLORSCROLLBAR:
 514         return (LRESULT)DEFWND_ControlColor( (HDC)wParam, msg - WM_CTLCOLORMSGBOX );
 515
 516     case WM_CTLCOLOR:
 517         return (LRESULT)DEFWND_ControlColor( (HDC)wParam, HIWORD(lParam) );
 518
 519     case WM_SETCURSOR:
 520         if (GetWindowLongW( hwnd, GWL_STYLE ) & WS_CHILD)
 521         {
 522             /* with the exception of the border around a resizable wnd,
 523              * give the parent first chance to set the cursor */
 524             if ((LOWORD(lParam) < HTSIZEFIRST) || (LOWORD(lParam) > HTSIZELAST))
 525             {
 526                 if (SendMessageW(GetParent(hwnd), WM_SETCURSOR, wParam, lParam)) return TRUE;
 527             }
 528         }
 529         NC_HandleSetCursor( hwnd, wParam, lParam );
 530         break;
 531
 532     case WM_SYSCOMMAND:
 533         return NC_HandleSysCommand( hwnd, wParam, lParam );
 534
 535     case WM_KEYDOWN:
 536         if(wParam == VK_F10) iF10Key = VK_F10;
 537         break;
 538
 539     case WM_SYSKEYDOWN:
 540         if( HIWORD(lParam) & KEYDATA_ALT )
 541         {
 542             /* if( HIWORD(lParam) & ~KEYDATA_PREVSTATE ) */
 543               if ( (wParam == VK_MENU || wParam == VK_LMENU
 544                     || wParam == VK_RMENU) && !iMenuSysKey )
 545                 iMenuSysKey = 1;
 546               else
 547                 iMenuSysKey = 0;
 548
 549             iF10Key = 0;
 550
 551             if( wParam == VK_F4 )       /* try to close the window */
 552             {
 553                 HWND top = GetAncestor( hwnd, GA_ROOT );
 554                 if (!(GetClassLongW( top, GCL_STYLE ) & CS_NOCLOSE))
 555                     PostMessageW( top, WM_SYSCOMMAND, SC_CLOSE, 0 );
 556             }
 557         }
 558         else if( wParam == VK_F10 )
 559             iF10Key = 1;
 560         else if( wParam == VK_ESCAPE && (GetKeyState(VK_SHIFT) & 0x8000))
 561             SendMessageW( hwnd, WM_SYSCOMMAND, SC_KEYMENU, ' ' );
 562         break;
 563
 564     case WM_KEYUP:
 565     case WM_SYSKEYUP:
 566         /* Press and release F10 or ALT */
 567         if (((wParam == VK_MENU || wParam == VK_LMENU || wParam == VK_RMENU)
 568              && iMenuSysKey) || ((wParam == VK_F10) && iF10Key))
 569               SendMessageW( GetAncestor( hwnd, GA_ROOT ), WM_SYSCOMMAND, SC_KEYMENU, 0L );
 570         iMenuSysKey = iF10Key = 0;
 571         break;
 572
 573     case WM_SYSCHAR:
 574     {
 575         iMenuSysKey = 0;
 576         if (wParam == '\r' && IsIconic(hwnd))
 577         {
 578             PostMessageW( hwnd, WM_SYSCOMMAND, SC_RESTORE, 0L );
 579             break;
 580         }
 581         if ((HIWORD(lParam) & KEYDATA_ALT) && wParam)
 582         {
 583             if (wParam == '\t' || wParam == '\x1b') break;
 584             if (wParam == ' ' && (GetWindowLongW( hwnd, GWL_STYLE ) & WS_CHILD))
 585                 SendMessageW( GetParent(hwnd), msg, wParam, lParam );
 586             else
 587                 SendMessageW( hwnd, WM_SYSCOMMAND, SC_KEYMENU, wParam );
 588         }
 589         else /* check for Ctrl-Esc */
 590             if (wParam != '\x1b') MessageBeep(0);
 591         break;
 592     }
 593
 594     case WM_SHOWWINDOW:
 595         {
 596             LONG style = GetWindowLongW( hwnd, GWL_STYLE );
 597             WND *pWnd;
 598             if (!lParam) return 0; /* sent from ShowWindow */
 599             if ((style & WS_VISIBLE) && wParam) return 0;
 600             if (!(style & WS_VISIBLE) && !wParam) return 0;
 601             if (!GetWindow( hwnd, GW_OWNER )) return 0;
 602             if (!(pWnd = WIN_GetPtr( hwnd ))) return 0;
 603             if (pWnd == WND_OTHER_PROCESS) return 0;
 604             if (wParam)
 605             {
 606                 if (!(pWnd->flags & WIN_NEEDS_SHOW_OWNEDPOPUP))
 607                 {
 608                     WIN_ReleasePtr( pWnd );
 609                     return 0;
 610                 }
 611                 pWnd->flags &= ~WIN_NEEDS_SHOW_OWNEDPOPUP;
 612             }
 613             else pWnd->flags |= WIN_NEEDS_SHOW_OWNEDPOPUP;
 614             WIN_ReleasePtr( pWnd );
 615             ShowWindow( hwnd, wParam ? SW_SHOWNOACTIVATE : SW_HIDE );
 616             break;
 617         }
 618
 619     case WM_CANCELMODE:
 620         iMenuSysKey = 0;
 621         MENU_EndMenu( hwnd );
 622         if (GetCapture() == hwnd) ReleaseCapture();
 623         break;
 624
 625     case WM_VKEYTOITEM:
 626     case WM_CHARTOITEM:
 627         return -1;
 628
 629     case WM_DROPOBJECT:
 630         return DRAG_FILE;
 631
 632     case WM_QUERYDROPOBJECT:
 633         return (GetWindowLongA( hwnd, GWL_EXSTYLE ) & WS_EX_ACCEPTFILES) != 0;
 634
 635     case WM_QUERYDRAGICON:
 636         {
 637             UINT len;
 638
 639             HICON hIcon = (HICON)GetClassLongPtrW( hwnd, GCLP_HICON );
 640             HINSTANCE instance = (HINSTANCE)GetWindowLongPtrW( hwnd, GWLP_HINSTANCE );
 641             if (hIcon) return (LRESULT)hIcon;
 642             for(len=1; len<64; len++)
 643                 if((hIcon = LoadIconW(instance, MAKEINTRESOURCEW(len))))
 644                     return (LRESULT)hIcon;
 645             return (LRESULT)LoadIconW(0, (LPWSTR)IDI_APPLICATION);
 646         }
 647         break;
 648
 649     case WM_ISACTIVEICON:
 650         {
 651             WND *wndPtr = WIN_GetPtr( hwnd );
 652             BOOL ret = (wndPtr->flags & WIN_NCACTIVATED) != 0;
 653             WIN_ReleasePtr( wndPtr );
 654             return ret;
 655         }
 656
 657     case WM_NOTIFYFORMAT:
 658       if (IsWindowUnicode(hwnd)) return NFR_UNICODE;
 659       else return NFR_ANSI;
 660
 661     case WM_QUERYOPEN:
 662     case WM_QUERYENDSESSION:
 663         return 1;
 664
 665     case WM_SETICON:
 666         {
 667             HICON ret;
 668             WND *wndPtr = WIN_GetPtr( hwnd );
 669
 670             switch(wParam)
 671             {
 672             case ICON_SMALL:
 673                 ret = wndPtr->hIconSmall;
 674                 wndPtr->hIconSmall = (HICON)lParam;
 675                 break;
 676             case ICON_BIG:
 677                 ret = wndPtr->hIcon;
 678                 wndPtr->hIcon = (HICON)lParam;
 679                 break;
 680             default:
 681                 ret = 0;
 682                 break;
 683             }
 684             WIN_ReleasePtr( wndPtr );
 685
 686             USER_Driver->pSetWindowIcon( hwnd, wParam, (HICON)lParam );
 687
 688             if( (GetWindowLongW( hwnd, GWL_STYLE ) & WS_CAPTION) == WS_CAPTION )
 689                 NC_HandleNCPaint( hwnd , (HRGN)1 );  /* Repaint caption */
 690
 691             return (LRESULT)ret;
 692         }
 693
 694     case WM_GETICON:
 695         {
 696             HICON ret;
 697             WND *wndPtr = WIN_GetPtr( hwnd );
 698
 699             switch(wParam)
 700             {
 701             case ICON_SMALL:
 702                 ret = wndPtr->hIconSmall;
 703                 break;
 704             case ICON_BIG:
 705                 ret = wndPtr->hIcon;
 706                 break;
 707             case ICON_SMALL2:
 708                 ret = wndPtr->hIconSmall;
 709                 if (!ret) ret = (HICON)GetClassLongPtrW( hwnd, GCLP_HICONSM );
 710                 /* FIXME: should have a default here if class icon is null */
 711                 break;
 712             default:
 713                 ret = 0;
 714                 break;
 715             }
 716             WIN_ReleasePtr( wndPtr );
 717             return (LRESULT)ret;
 718         }
 719
 720     case WM_HELP:
 721         SendMessageW( GetParent(hwnd), msg, wParam, lParam );
 722         break;
 723
 724     case WM_APPCOMMAND:
 725         {
 726             HWND parent = GetParent(hwnd);
 727             if(!parent)
 728                 HOOK_CallHooks(WH_SHELL, HSHELL_APPCOMMAND, wParam, lParam, TRUE);
 729             else
 730                 SendMessageW( parent, msg, wParam, lParam );
 731             break;
 732         }
 733     case WM_KEYF1:
 734         {
 735             HELPINFO hi;
 736
 737             hi.cbSize = sizeof(HELPINFO);
 738             GetCursorPos( &hi.MousePos );
 739             if (MENU_IsMenuActive())
 740             {
 741                 hi.iContextType = HELPINFO_MENUITEM;
 742                 hi.hItemHandle = MENU_IsMenuActive();
 743                 hi.iCtrlId = MenuItemFromPoint( hwnd, hi.hItemHandle, hi.MousePos );
 744                 hi.dwContextId = GetMenuContextHelpId( hi.hItemHandle );
 745             }
 746             else
 747             {
 748                 hi.iContextType = HELPINFO_WINDOW;
 749                 hi.hItemHandle = hwnd;
 750                 hi.iCtrlId = GetWindowLongPtrA( hwnd, GWLP_ID );
 751                 hi.dwContextId = GetWindowContextHelpId( hwnd );
 752             }
 753             SendMessageW( hwnd, WM_HELP, 0, (LPARAM)&hi );
 754             break;
 755         }
 756
 757     case WM_INPUTLANGCHANGEREQUEST:
 758         ActivateKeyboardLayout( (HKL)lParam, 0 );
 759         break;
 760
 761     case WM_INPUTLANGCHANGE:
 762         {
 763             int count = 0;
 764             HWND *win_array = WIN_ListChildren( hwnd );
 765
 766             if (!win_array)
 767                 break;
 768             while (win_array[count])
 769                 SendMessageW( win_array[count++], WM_INPUTLANGCHANGE, wParam, lParam);
 770             HeapFree(GetProcessHeap(),0,win_array);
 771             break;
 772         }
 773
 774     }
 775
 776     return 0;
 777 }
 778
 779 static LPARAM DEFWND_GetTextA( WND *wndPtr, LPSTR dest, WPARAM wParam )
 780 {
 781     LPARAM result = 0;
 782
 783     __TRY
 784     {
 785         if (wndPtr->text)
 786         {
 787             if (!WideCharToMultiByte( CP_ACP, 0, wndPtr->text, -1,
 788                                       dest, wParam, NULL, NULL )) dest[wParam-1] = 0;
 789             result = strlen( dest );
 790         }
 791         else dest[0] = '\0';
 792     }
 793     __EXCEPT_PAGE_FAULT
 794     {
 795         return 0;
 796     }
 797     __ENDTRY
 798     return result;
 799 }
 800
 801 /***********************************************************************
 802  *              DefWindowProcA (USER32.@)
 803  *
 804  * See DefWindowProcW.
 805  */
 806 LRESULT WINAPI DefWindowProcA( HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam )
 807 {
 808     LRESULT result = 0;
 809     HWND full_handle;
 810
 811     if (!(full_handle = WIN_IsCurrentProcess( hwnd )))
 812     {
 813         if (!IsWindow( hwnd )) return 0;
 814         ERR( "called for other process window %p\n", hwnd );
 815         return 0;
 816     }
 817     hwnd = full_handle;
 818
 819     SPY_EnterMessage( SPY_DEFWNDPROC, hwnd, msg, wParam, lParam );
 820
 821     switch(msg)
 822     {
 823     case WM_NCCREATE:
 824         if (lParam)
 825         {
 826             CREATESTRUCTA *cs = (CREATESTRUCTA *)lParam;
 827             /* check for string, as static icons, bitmaps (SS_ICON, SS_BITMAP)
 828              * may have child window IDs instead of window name */
 829             if (HIWORD(cs->lpszName))
 830                 DEFWND_SetTextA( hwnd, cs->lpszName );
 831             result = 1;
 832         }
 833         break;
 834
 835     case WM_GETTEXTLENGTH:
 836         {
 837             WND *wndPtr = WIN_GetPtr( hwnd );
 838             if (wndPtr && wndPtr->text)
 839                 result = WideCharToMultiByte( CP_ACP, 0, wndPtr->text, strlenW(wndPtr->text),
 840                                               NULL, 0, NULL, NULL );
 841             WIN_ReleasePtr( wndPtr );
 842         }
 843         break;
 844
 845     case WM_GETTEXT:
 846         if (wParam)
 847         {
 848             LPSTR dest = (LPSTR)lParam;
 849             WND *wndPtr = WIN_GetPtr( hwnd );
 850
 851             if (!wndPtr) break;
 852             result = DEFWND_GetTextA( wndPtr, dest, wParam );
 853
 854             WIN_ReleasePtr( wndPtr );
 855         }
 856         break;
 857
 858     case WM_SETTEXT:
 859         DEFWND_SetTextA( hwnd, (LPCSTR)lParam );
 860         if( (GetWindowLongW( hwnd, GWL_STYLE ) & WS_CAPTION) == WS_CAPTION )
 861             NC_HandleNCPaint( hwnd , (HRGN)1 );  /* Repaint caption */
 862         result = 1; /* success. FIXME: check text length */
 863         break;
 864
 865     case WM_IME_CHAR:
 866         if (HIBYTE(wParam)) PostMessageA( hwnd, WM_CHAR, HIBYTE(wParam), lParam );
 867         PostMessageA( hwnd, WM_CHAR, LOBYTE(wParam), lParam );
 868         break;
 869
 870     case WM_IME_KEYDOWN:
 871         result = PostMessageA( hwnd, WM_KEYDOWN, wParam, lParam );
 872         break;
 873
 874     case WM_IME_KEYUP:
 875         result = PostMessageA( hwnd, WM_KEYUP, wParam, lParam );
 876         break;
 877
 878     case WM_IME_STARTCOMPOSITION:
 879     case WM_IME_COMPOSITION:
 880     case WM_IME_ENDCOMPOSITION:
 881     case WM_IME_SELECT:
 882     case WM_IME_NOTIFY:
 883         {
 884             HWND hwndIME;
 885
 886             hwndIME = DEFWND_ImmGetDefaultIMEWnd( hwnd );
 887             if (hwndIME)
 888                 result = SendMessageA( hwndIME, msg, wParam, lParam );
 889         }
 890         break;
 891     case WM_IME_SETCONTEXT:
 892         {
 893             HWND hwndIME;
 894
 895             hwndIME = DEFWND_ImmGetDefaultIMEWnd( hwnd );
 896             if (hwndIME)
 897                 result = DEFWND_ImmIsUIMessageA( hwndIME, msg, wParam, lParam );
 898         }
 899         break;
 900
 901     case WM_SYSCHAR:
 902     {
 903         CHAR ch = LOWORD(wParam);
 904         WCHAR wch;
 905         MultiByteToWideChar(CP_ACP, 0, &ch, 1, &wch, 1);
 906         wParam = MAKEWPARAM( wch, HIWORD(wParam) );
 907     }
 908     /* fall through */
 909     default:
 910         result = DEFWND_DefWinProc( hwnd, msg, wParam, lParam );
 911         break;
 912     }
 913
 914     SPY_ExitMessage( SPY_RESULT_DEFWND, hwnd, msg, result, wParam, lParam );
 915     return result;
 916 }
 917
 918
 919 static LPARAM DEFWND_GetTextW( WND *wndPtr, LPWSTR dest, WPARAM wParam )
 920 {
 921     LPARAM result = 0;
 922
 923     __TRY
 924     {
 925         if (wndPtr->text)
 926         {
 927             lstrcpynW( dest, wndPtr->text, wParam );
 928             result = strlenW( dest );
 929         }
 930         else dest[0] = '\0';
 931     }
 932     __EXCEPT_PAGE_FAULT
 933     {
 934         return 0;
 935     }
 936     __ENDTRY
 937
 938     return result;
 939 }
 940
 941 /***********************************************************************
 942  *              DefWindowProcW (USER32.@) Calls default window message handler
 943  *
 944  * Calls default window procedure for messages not processed
 945  *  by application.
 946  *
 947  *  RETURNS
 948  *     Return value is dependent upon the message.
 949 */
 950 LRESULT WINAPI DefWindowProcW(
 951     HWND hwnd,      /* [in] window procedure receiving message */
 952     UINT msg,       /* [in] message identifier */
 953     WPARAM wParam,  /* [in] first message parameter */
 954     LPARAM lParam )   /* [in] second message parameter */
 955 {
 956     LRESULT result = 0;
 957     HWND full_handle;
 958
 959     if (!(full_handle = WIN_IsCurrentProcess( hwnd )))
 960     {
 961         if (!IsWindow( hwnd )) return 0;
 962         ERR( "called for other process window %p\n", hwnd );
 963         return 0;
 964     }
 965     hwnd = full_handle;
 966     SPY_EnterMessage( SPY_DEFWNDPROC, hwnd, msg, wParam, lParam );
 967
 968     switch(msg)
 969     {
 970     case WM_NCCREATE:
 971         if (lParam)
 972         {
 973             CREATESTRUCTW *cs = (CREATESTRUCTW *)lParam;
 974             /* check for string, as static icons, bitmaps (SS_ICON, SS_BITMAP)
 975              * may have child window IDs instead of window name */
 976             if (HIWORD(cs->lpszName))
 977                 DEFWND_SetTextW( hwnd, cs->lpszName );
 978             result = 1;
 979         }
 980         break;
 981
 982     case WM_GETTEXTLENGTH:
 983         {
 984             WND *wndPtr = WIN_GetPtr( hwnd );
 985             if (wndPtr && wndPtr->text) result = (LRESULT)strlenW(wndPtr->text);
 986             WIN_ReleasePtr( wndPtr );
 987         }
 988         break;
 989
 990     case WM_GETTEXT:
 991         if (wParam)
 992         {
 993             LPWSTR dest = (LPWSTR)lParam;
 994             WND *wndPtr = WIN_GetPtr( hwnd );
 995
 996             if (!wndPtr) break;
 997             result = DEFWND_GetTextW( wndPtr, dest, wParam );
 998             WIN_ReleasePtr( wndPtr );
 999         }
1000         break;
1001
1002     case WM_SETTEXT:
1003         DEFWND_SetTextW( hwnd, (LPCWSTR)lParam );
1004         if( (GetWindowLongW( hwnd, GWL_STYLE ) & WS_CAPTION) == WS_CAPTION )
1005             NC_HandleNCPaint( hwnd , (HRGN)1 );  /* Repaint caption */
1006         result = 1; /* success. FIXME: check text length */
1007         break;
1008
1009     case WM_IME_CHAR:
1010         PostMessageW( hwnd, WM_CHAR, wParam, lParam );
1011         break;
1012
1013     case WM_IME_KEYDOWN:
1014         result = PostMessageW( hwnd, WM_KEYDOWN, wParam, lParam );
1015         break;
1016
1017     case WM_IME_KEYUP:
1018         result = PostMessageW( hwnd, WM_KEYUP, wParam, lParam );
1019         break;
1020
1021     case WM_IME_SETCONTEXT:
1022         {
1023             HWND hwndIME;
1024
1025             hwndIME = DEFWND_ImmGetDefaultIMEWnd( hwnd );
1026             if (hwndIME)
1027                 result = DEFWND_ImmIsUIMessageW( hwndIME, msg, wParam, lParam );
1028         }
1029         break;
1030
1031     case WM_IME_STARTCOMPOSITION:
1032     case WM_IME_COMPOSITION:
1033     case WM_IME_ENDCOMPOSITION:
1034     case WM_IME_SELECT:
1035     case WM_IME_NOTIFY:
1036         {
1037             HWND hwndIME;
1038
1039             hwndIME = DEFWND_ImmGetDefaultIMEWnd( hwnd );
1040             if (hwndIME)
1041                 result = SendMessageW( hwndIME, msg, wParam, lParam );
1042         }
1043         break;
1044
1045     default:
1046         result = DEFWND_DefWinProc( hwnd, msg, wParam, lParam );
1047         break;
1048     }
1049     SPY_ExitMessage( SPY_RESULT_DEFWND, hwnd, msg, result, wParam, lParam );
1050     return result;
1051 }