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 <string.h>
  23 #include <stdarg.h>
  24
  25 #include "windef.h"
  26 #include "winbase.h"
  27 #include "wingdi.h"
  28 #include "winnls.h"
  29 #include "imm.h"
  30 #include "win.h"
  31 #include "user_private.h"
  32 #include "controls.h"
  33 #include "wine/server.h"
  34 #include "wine/exception.h"
  35 #include "wine/debug.h"
  36
  37 WINE_DEFAULT_DEBUG_CHANNEL(win);
  38
  39   /* bits in the dwKeyData */
  40 #define KEYDATA_ALT             0x2000
  41 #define KEYDATA_PREVSTATE       0x4000
  42
  43 #define DRAG_FILE  0x454C4946
  44
  45 static short iF10Key = 0;
  46 static short iMenuSysKey = 0;
  47
  48 /***********************************************************************
  49  *           DEFWND_HandleWindowPosChanged
  50  *
  51  * Handle the WM_WINDOWPOSCHANGED message.
  52  */
  53 static void DEFWND_HandleWindowPosChanged( HWND hwnd, const WINDOWPOS *winpos )
  54 {
  55     RECT rect;
  56
  57     WIN_GetRectangles( hwnd, COORDS_PARENT, NULL, &rect );
  58     if (!(winpos->flags & SWP_NOCLIENTMOVE))
  59         SendMessageW( hwnd, WM_MOVE, 0, MAKELONG(rect.left, rect.top));
  60
  61     if (!(winpos->flags & SWP_NOCLIENTSIZE) || (winpos->flags & SWP_STATECHANGED))
  62     {
  63         if (IsIconic( hwnd ))
  64         {
  65             SendMessageW( hwnd, WM_SIZE, SIZE_MINIMIZED, 0 );
  66         }
  67         else
  68         {
  69             WPARAM wp = IsZoomed( hwnd ) ? SIZE_MAXIMIZED : SIZE_RESTORED;
  70
  71             SendMessageW( hwnd, WM_SIZE, wp, MAKELONG(rect.right-rect.left, rect.bottom-rect.top) );
  72         }
  73     }
  74 }
  75
  76
  77 /***********************************************************************
  78  *           DEFWND_SetTextA
  79  *
  80  * Set the window text.
  81  */
  82 static LRESULT DEFWND_SetTextA( HWND hwnd, LPCSTR text )
  83 {
  84     int count;
  85     WCHAR *textW;
  86     WND *wndPtr;
  87
  88     /* check for string, as static icons, bitmaps (SS_ICON, SS_BITMAP)
  89      * may have child window IDs instead of window name */
  90     if (text && IS_INTRESOURCE(text))
  91         return 0;
  92
  93     if (!text) text = "";
  94     count = MultiByteToWideChar( CP_ACP, 0, text, -1, NULL, 0 );
  95
  96     if (!(wndPtr = WIN_GetPtr( hwnd ))) return 0;
  97     if ((textW = HeapAlloc(GetProcessHeap(), 0, count * sizeof(WCHAR))))
  98     {
  99         HeapFree(GetProcessHeap(), 0, wndPtr->text);
 100         wndPtr->text = textW;
 101         MultiByteToWideChar( CP_ACP, 0, text, -1, textW, count );
 102         SERVER_START_REQ( set_window_text )
 103         {
 104             req->handle = wine_server_user_handle( hwnd );
 105             wine_server_add_data( req, textW, (count-1) * sizeof(WCHAR) );
 106             wine_server_call( req );
 107         }
 108         SERVER_END_REQ;
 109     }
 110     else
 111         ERR("Not enough memory for window text\n");
 112     WIN_ReleasePtr( wndPtr );
 113
 114     USER_Driver->pSetWindowText( hwnd, textW );
 115
 116     return 1;
 117 }
 118
 119 /***********************************************************************
 120  *           DEFWND_SetTextW
 121  *
 122  * Set the window text.
 123  */
 124 static LRESULT DEFWND_SetTextW( HWND hwnd, LPCWSTR text )
 125 {
 126     WND *wndPtr;
 127     int count;
 128
 129     /* check for string, as static icons, bitmaps (SS_ICON, SS_BITMAP)
 130      * may have child window IDs instead of window name */
 131     if (text && IS_INTRESOURCE(text))
 132         return 0;
 133
 134     if (!text) text = L"";
 135     count = lstrlenW(text) + 1;
 136
 137     if (!(wndPtr = WIN_GetPtr( hwnd ))) return 0;
 138     HeapFree(GetProcessHeap(), 0, wndPtr->text);
 139     if ((wndPtr->text = HeapAlloc(GetProcessHeap(), 0, count * sizeof(WCHAR))))
 140     {
 141         lstrcpyW( wndPtr->text, text );
 142         SERVER_START_REQ( set_window_text )
 143         {
 144             req->handle = wine_server_user_handle( hwnd );
 145             wine_server_add_data( req, wndPtr->text, (count-1) * sizeof(WCHAR) );
 146             wine_server_call( req );
 147         }
 148         SERVER_END_REQ;
 149     }
 150     else
 151         ERR("Not enough memory for window text\n");
 152     text = wndPtr->text;
 153     WIN_ReleasePtr( wndPtr );
 154
 155     USER_Driver->pSetWindowText( hwnd, text );
 156
 157     return 1;
 158 }
 159
 160 /***********************************************************************
 161  *           DEFWND_ControlColor
 162  *
 163  * Default colors for control painting.
 164  */
 165 HBRUSH DEFWND_ControlColor( HDC hDC, UINT ctlType )
 166 {
 167     if( ctlType == CTLCOLOR_SCROLLBAR)
 168     {
 169         HBRUSH hb = GetSysColorBrush(COLOR_SCROLLBAR);
 170         COLORREF bk = GetSysColor(COLOR_3DHILIGHT);
 171         SetTextColor( hDC, GetSysColor(COLOR_3DFACE));
 172         SetBkColor( hDC, bk);
 173
 174         /* if COLOR_WINDOW happens to be the same as COLOR_3DHILIGHT
 175          * we better use 0x55aa bitmap brush to make scrollbar's background
 176          * look different from the window background.
 177          */
 178         if (bk == GetSysColor(COLOR_WINDOW))
 179             return SYSCOLOR_Get55AABrush();
 180
 181         UnrealizeObject( hb );
 182         return hb;
 183     }
 184
 185     SetTextColor( hDC, GetSysColor(COLOR_WINDOWTEXT));
 186
 187     if ((ctlType == CTLCOLOR_EDIT) || (ctlType == CTLCOLOR_LISTBOX))
 188         SetBkColor( hDC, GetSysColor(COLOR_WINDOW) );
 189     else {
 190         SetBkColor( hDC, GetSysColor(COLOR_3DFACE) );
 191         return GetSysColorBrush(COLOR_3DFACE);
 192     }
 193     return GetSysColorBrush(COLOR_WINDOW);
 194 }
 195
 196
 197 /***********************************************************************
 198  *           DEFWND_Print
 199  *
 200  * This method handles the default behavior for the WM_PRINT message.
 201  */
 202 static void DEFWND_Print( HWND hwnd, HDC hdc, ULONG uFlags)
 203 {
 204   /*
 205    * Visibility flag.
 206    */
 207   if ( (uFlags & PRF_CHECKVISIBLE) &&
 208        !IsWindowVisible(hwnd) )
 209       return;
 210
 211   /*
 212    * Unimplemented flags.
 213    */
 214   if ( (uFlags & PRF_CHILDREN) ||
 215        (uFlags & PRF_OWNED)    ||
 216        (uFlags & PRF_NONCLIENT) )
 217   {
 218     WARN("WM_PRINT message with unsupported flags\n");
 219   }
 220
 221   /*
 222    * Background
 223    */
 224   if ( uFlags & PRF_ERASEBKGND)
 225     SendMessageW(hwnd, WM_ERASEBKGND, (WPARAM)hdc, 0);
 226
 227   /*
 228    * Client area
 229    */
 230   if ( uFlags & PRF_CLIENT)
 231     SendMessageW(hwnd, WM_PRINTCLIENT, (WPARAM)hdc, uFlags);
 232 }
 233
 234
 235
 236 /***********************************************************************
 237  *           DEFWND_DefWinProc
 238  *
 239  * Default window procedure for messages that are the same in Ansi and Unicode.
 240  */
 241 static LRESULT DEFWND_DefWinProc( HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam )
 242 {
 243     switch(msg)
 244     {
 245     case WM_NCPAINT:
 246         return NC_HandleNCPaint( hwnd, (HRGN)wParam );
 247
 248     case WM_NCMOUSEMOVE:
 249         return NC_HandleNCMouseMove( hwnd, wParam, lParam );
 250
 251     case WM_NCMOUSELEAVE:
 252         return NC_HandleNCMouseLeave( hwnd );
 253
 254     case WM_NCHITTEST:
 255         {
 256             POINT pt;
 257             pt.x = (short)LOWORD(lParam);
 258             pt.y = (short)HIWORD(lParam);
 259             return NC_HandleNCHitTest( hwnd, pt );
 260         }
 261
 262     case WM_NCCALCSIZE:
 263         NC_HandleNCCalcSize( hwnd, wParam, (RECT *)lParam );
 264         break;
 265
 266     case WM_WINDOWPOSCHANGING:
 267         return WINPOS_HandleWindowPosChanging( hwnd, (WINDOWPOS *)lParam );
 268
 269     case WM_WINDOWPOSCHANGED:
 270         DEFWND_HandleWindowPosChanged( hwnd, (const WINDOWPOS *)lParam );
 271         break;
 272
 273     case WM_LBUTTONDOWN:
 274     case WM_RBUTTONDOWN:
 275     case WM_MBUTTONDOWN:
 276         iF10Key = iMenuSysKey = 0;
 277         break;
 278
 279     case WM_NCLBUTTONDOWN:
 280         return NC_HandleNCLButtonDown( hwnd, wParam, lParam );
 281
 282     case WM_LBUTTONDBLCLK:
 283         return NC_HandleNCLButtonDblClk( hwnd, HTCLIENT, lParam );
 284
 285     case WM_NCLBUTTONDBLCLK:
 286         return NC_HandleNCLButtonDblClk( hwnd, wParam, lParam );
 287
 288     case WM_NCRBUTTONDOWN:
 289         return NC_HandleNCRButtonDown( hwnd, wParam, lParam );
 290
 291     case WM_RBUTTONUP:
 292         {
 293             POINT pt;
 294             pt.x = (short)LOWORD(lParam);
 295             pt.y = (short)HIWORD(lParam);
 296             ClientToScreen(hwnd, &pt);
 297             SendMessageW( hwnd, WM_CONTEXTMENU, (WPARAM)hwnd, MAKELPARAM(pt.x, pt.y) );
 298         }
 299         break;
 300
 301     case WM_NCRBUTTONUP:
 302         /*
 303          * FIXME : we must NOT send WM_CONTEXTMENU on a WM_NCRBUTTONUP (checked
 304          * in Windows), but what _should_ we do? According to MSDN :
 305          * "If it is appropriate to do so, the system sends the WM_SYSCOMMAND
 306          * message to the window". When is it appropriate?
 307          */
 308         break;
 309
 310     case WM_XBUTTONUP:
 311     case WM_NCXBUTTONUP:
 312         if (HIWORD(wParam) == XBUTTON1 || HIWORD(wParam) == XBUTTON2)
 313         {
 314             SendMessageW(hwnd, WM_APPCOMMAND, (WPARAM)hwnd,
 315                          MAKELPARAM(LOWORD(wParam), FAPPCOMMAND_MOUSE | HIWORD(wParam)));
 316         }
 317         break;
 318
 319     case WM_CONTEXTMENU:
 320         if (GetWindowLongW( hwnd, GWL_STYLE ) & WS_CHILD)
 321             SendMessageW( GetParent(hwnd), msg, (WPARAM)hwnd, lParam );
 322         else
 323         {
 324             LONG hitcode;
 325             POINT pt;
 326             pt.x = (short)LOWORD(lParam);
 327             pt.y = (short)HIWORD(lParam);
 328             hitcode = NC_HandleNCHitTest(hwnd, pt);
 329
 330             /* Track system popup if click was in the caption area. */
 331             if (hitcode==HTCAPTION || hitcode==HTSYSMENU)
 332                TrackPopupMenu(GetSystemMenu(hwnd, FALSE),
 333                                TPM_LEFTBUTTON | TPM_RIGHTBUTTON,
 334                                pt.x, pt.y, 0, hwnd, NULL);
 335         }
 336         break;
 337
 338     case WM_POPUPSYSTEMMENU:
 339         /* This is an undocumented message used by the windows taskbar to
 340            display the system menu of windows that belong to other processes. */
 341         TrackPopupMenu( GetSystemMenu(hwnd, FALSE), TPM_LEFTBUTTON|TPM_RIGHTBUTTON,
 342                         (short)LOWORD(lParam), (short)HIWORD(lParam), 0, hwnd, NULL );
 343         return 0;
 344
 345     case WM_NCACTIVATE:
 346         return NC_HandleNCActivate( hwnd, wParam, lParam );
 347
 348     case WM_NCDESTROY:
 349         {
 350             WND *wndPtr = WIN_GetPtr( hwnd );
 351             if (!wndPtr) return 0;
 352             HeapFree( GetProcessHeap(), 0, wndPtr->text );
 353             wndPtr->text = NULL;
 354             HeapFree( GetProcessHeap(), 0, wndPtr->pScroll );
 355             wndPtr->pScroll = NULL;
 356             WIN_ReleasePtr( wndPtr );
 357             return 0;
 358         }
 359
 360     case WM_PRINT:
 361         DEFWND_Print(hwnd, (HDC)wParam, lParam);
 362         return 0;
 363
 364     case WM_PAINTICON:
 365     case WM_PAINT:
 366         {
 367             PAINTSTRUCT ps;
 368             HDC hdc = NtUserBeginPaint( hwnd, &ps );
 369             if( hdc )
 370             {
 371               HICON hIcon;
 372               if (IsIconic(hwnd) && ((hIcon = (HICON)GetClassLongPtrW( hwnd, GCLP_HICON))) )
 373               {
 374                   RECT rc;
 375                   int x, y;
 376
 377                   GetClientRect( hwnd, &rc );
 378                   x = (rc.right - rc.left - GetSystemMetrics(SM_CXICON))/2;
 379                   y = (rc.bottom - rc.top - GetSystemMetrics(SM_CYICON))/2;
 380                   TRACE("Painting class icon: vis rect=(%s)\n",
 381                         wine_dbgstr_rect(&ps.rcPaint));
 382                   DrawIcon( hdc, x, y, hIcon );
 383               }
 384               NtUserEndPaint( hwnd, &ps );
 385             }
 386             return 0;
 387         }
 388
 389     case WM_SYNCPAINT:
 390         NtUserRedrawWindow ( hwnd, NULL, 0, RDW_ERASENOW | RDW_ERASE | RDW_ALLCHILDREN );
 391         return 0;
 392
 393     case WM_SETREDRAW:
 394         if (wParam) WIN_SetStyle( hwnd, WS_VISIBLE, 0 );
 395         else
 396         {
 397             NtUserRedrawWindow( hwnd, NULL, 0, RDW_ALLCHILDREN | RDW_VALIDATE );
 398             WIN_SetStyle( hwnd, 0, WS_VISIBLE );
 399         }
 400         return 0;
 401
 402     case WM_CLOSE:
 403         DestroyWindow( hwnd );
 404         return 0;
 405
 406     case WM_MOUSEACTIVATE:
 407         if (GetWindowLongW( hwnd, GWL_STYLE ) & WS_CHILD)
 408         {
 409             LONG ret = SendMessageW( GetParent(hwnd), WM_MOUSEACTIVATE, wParam, lParam );
 410             if (ret) return ret;
 411         }
 412
 413         /* Caption clicks are handled by NC_HandleNCLButtonDown() */
 414         return ( HIWORD(lParam) == WM_LBUTTONDOWN && LOWORD(lParam) == HTCAPTION ? MA_NOACTIVATE : MA_ACTIVATE );
 415
 416     case WM_ACTIVATE:
 417         /* The default action in Windows is to set the keyboard focus to
 418          * the window, if it's being activated and not minimized */
 419         if (LOWORD(wParam) != WA_INACTIVE) {
 420             if (!IsIconic(hwnd)) NtUserSetFocus( hwnd );
 421         }
 422         break;
 423
 424     case WM_MOUSEWHEEL:
 425         if (GetWindowLongW( hwnd, GWL_STYLE ) & WS_CHILD)
 426             return SendMessageW( GetParent(hwnd), WM_MOUSEWHEEL, wParam, lParam );
 427         break;
 428
 429     case WM_ERASEBKGND:
 430     case WM_ICONERASEBKGND:
 431         {
 432             RECT rect;
 433             HDC hdc = (HDC)wParam;
 434             HBRUSH hbr = (HBRUSH)GetClassLongPtrW( hwnd, GCLP_HBRBACKGROUND );
 435             if (!hbr) return 0;
 436
 437             if (GetClassLongW( hwnd, GCL_STYLE ) & CS_PARENTDC)
 438             {
 439                 /* can't use GetClipBox with a parent DC or we fill the whole parent */
 440                 GetClientRect( hwnd, &rect );
 441                 DPtoLP( hdc, (LPPOINT)&rect, 2 );
 442             }
 443             else GetClipBox( hdc, &rect );
 444             FillRect( hdc, &rect, hbr );
 445             return 1;
 446         }
 447
 448     case WM_GETDLGCODE:
 449         return 0;
 450
 451     case WM_CTLCOLORMSGBOX:
 452     case WM_CTLCOLOREDIT:
 453     case WM_CTLCOLORLISTBOX:
 454     case WM_CTLCOLORBTN:
 455     case WM_CTLCOLORDLG:
 456     case WM_CTLCOLORSTATIC:
 457     case WM_CTLCOLORSCROLLBAR:
 458         return (LRESULT)DEFWND_ControlColor( (HDC)wParam, msg - WM_CTLCOLORMSGBOX );
 459
 460     case WM_CTLCOLOR:
 461         return (LRESULT)DEFWND_ControlColor( (HDC)wParam, HIWORD(lParam) );
 462
 463     case WM_SETCURSOR:
 464         if (GetWindowLongW( hwnd, GWL_STYLE ) & WS_CHILD)
 465         {
 466             /* with the exception of the border around a resizable wnd,
 467              * give the parent first chance to set the cursor */
 468             if ((LOWORD(lParam) < HTSIZEFIRST) || (LOWORD(lParam) > HTSIZELAST))
 469             {
 470                 HWND parent = GetParent( hwnd );
 471                 if (parent != GetDesktopWindow() &&
 472                     SendMessageW( parent, WM_SETCURSOR, wParam, lParam )) return TRUE;
 473             }
 474         }
 475         NC_HandleSetCursor( hwnd, wParam, lParam );
 476         break;
 477
 478     case WM_SYSCOMMAND:
 479         return NC_HandleSysCommand( hwnd, wParam, lParam );
 480
 481     case WM_KEYDOWN:
 482         if(wParam == VK_F10) iF10Key = VK_F10;
 483         break;
 484
 485     case WM_SYSKEYDOWN:
 486         if( HIWORD(lParam) & KEYDATA_ALT )
 487         {
 488             /* if( HIWORD(lParam) & ~KEYDATA_PREVSTATE ) */
 489               if ( (wParam == VK_MENU || wParam == VK_LMENU
 490                     || wParam == VK_RMENU) && !iMenuSysKey )
 491                 iMenuSysKey = 1;
 492               else
 493                 iMenuSysKey = 0;
 494
 495             iF10Key = 0;
 496
 497             if( wParam == VK_F4 )       /* try to close the window */
 498             {
 499                 HWND top = NtUserGetAncestor( hwnd, GA_ROOT );
 500                 if (!(GetClassLongW( top, GCL_STYLE ) & CS_NOCLOSE))
 501                     PostMessageW( top, WM_SYSCOMMAND, SC_CLOSE, 0 );
 502             }
 503         }
 504         else if( wParam == VK_F10 )
 505         {
 506             if (NtUserGetKeyState(VK_SHIFT) & 0x8000)
 507                 SendMessageW( hwnd, WM_CONTEXTMENU, (WPARAM)hwnd, -1 );
 508             iF10Key = 1;
 509         }
 510         else if (wParam == VK_ESCAPE && (NtUserGetKeyState(VK_SHIFT) & 0x8000))
 511             SendMessageW( hwnd, WM_SYSCOMMAND, SC_KEYMENU, ' ' );
 512         break;
 513
 514     case WM_KEYUP:
 515     case WM_SYSKEYUP:
 516         /* Press and release F10 or ALT */
 517         if (((wParam == VK_MENU || wParam == VK_LMENU || wParam == VK_RMENU)
 518              && iMenuSysKey) || ((wParam == VK_F10) && iF10Key))
 519               SendMessageW( NtUserGetAncestor( hwnd, GA_ROOT ), WM_SYSCOMMAND, SC_KEYMENU, 0L );
 520         iMenuSysKey = iF10Key = 0;
 521         break;
 522
 523     case WM_SYSCHAR:
 524     {
 525         iMenuSysKey = 0;
 526         if (wParam == '\r' && IsIconic(hwnd))
 527         {
 528             PostMessageW( hwnd, WM_SYSCOMMAND, SC_RESTORE, 0L );
 529             break;
 530         }
 531         if ((HIWORD(lParam) & KEYDATA_ALT) && wParam)
 532         {
 533             if (wParam == '\t' || wParam == '\x1b') break;
 534             if (wParam == ' ' && (GetWindowLongW( hwnd, GWL_STYLE ) & WS_CHILD))
 535                 SendMessageW( GetParent(hwnd), msg, wParam, lParam );
 536             else
 537                 SendMessageW( hwnd, WM_SYSCOMMAND, SC_KEYMENU, wParam );
 538         }
 539         else /* check for Ctrl-Esc */
 540             if (wParam != '\x1b') MessageBeep(0);
 541         break;
 542     }
 543
 544     case WM_SHOWWINDOW:
 545         {
 546             LONG style = GetWindowLongW( hwnd, GWL_STYLE );
 547             WND *pWnd;
 548             if (!lParam) return 0; /* sent from ShowWindow */
 549             if ((style & WS_VISIBLE) && wParam) return 0;
 550             if (!(style & WS_VISIBLE) && !wParam) return 0;
 551             if (!GetWindow( hwnd, GW_OWNER )) return 0;
 552             if (!(pWnd = WIN_GetPtr( hwnd ))) return 0;
 553             if (pWnd == WND_OTHER_PROCESS) return 0;
 554             if (wParam)
 555             {
 556                 if (!(pWnd->flags & WIN_NEEDS_SHOW_OWNEDPOPUP))
 557                 {
 558                     WIN_ReleasePtr( pWnd );
 559                     return 0;
 560                 }
 561                 pWnd->flags &= ~WIN_NEEDS_SHOW_OWNEDPOPUP;
 562             }
 563             else pWnd->flags |= WIN_NEEDS_SHOW_OWNEDPOPUP;
 564             WIN_ReleasePtr( pWnd );
 565             ShowWindow( hwnd, wParam ? SW_SHOWNOACTIVATE : SW_HIDE );
 566             break;
 567         }
 568
 569     case WM_CANCELMODE:
 570         iMenuSysKey = 0;
 571         MENU_EndMenu( hwnd );
 572         if (GetCapture() == hwnd) ReleaseCapture();
 573         break;
 574
 575     case WM_VKEYTOITEM:
 576     case WM_CHARTOITEM:
 577         return -1;
 578
 579     case WM_DROPOBJECT:
 580         return DRAG_FILE;
 581
 582     case WM_QUERYDROPOBJECT:
 583         return (GetWindowLongA( hwnd, GWL_EXSTYLE ) & WS_EX_ACCEPTFILES) != 0;
 584
 585     case WM_QUERYDRAGICON:
 586         {
 587             UINT len;
 588
 589             HICON hIcon = (HICON)GetClassLongPtrW( hwnd, GCLP_HICON );
 590             HINSTANCE instance = (HINSTANCE)GetWindowLongPtrW( hwnd, GWLP_HINSTANCE );
 591             if (hIcon) return (LRESULT)hIcon;
 592             for(len=1; len<64; len++)
 593                 if((hIcon = LoadIconW(instance, MAKEINTRESOURCEW(len))))
 594                     return (LRESULT)hIcon;
 595             return (LRESULT)LoadIconW(0, (LPWSTR)IDI_APPLICATION);
 596         }
 597         break;
 598
 599     case WM_ISACTIVEICON:
 600         return (win_get_flags( hwnd ) & WIN_NCACTIVATED) != 0;
 601
 602     case WM_NOTIFYFORMAT:
 603       if (IsWindowUnicode(hwnd)) return NFR_UNICODE;
 604       else return NFR_ANSI;
 605
 606     case WM_QUERYOPEN:
 607     case WM_QUERYENDSESSION:
 608         return 1;
 609
 610     case WM_SETICON:
 611         {
 612             HICON ret;
 613             WND *wndPtr = WIN_GetPtr( hwnd );
 614
 615             switch(wParam)
 616             {
 617             case ICON_SMALL:
 618                 ret = wndPtr->hIconSmall;
 619                 if (ret && !lParam && wndPtr->hIcon)
 620                 {
 621                     wndPtr->hIconSmall2 = CopyImage( wndPtr->hIcon, IMAGE_ICON,
 622                                                      GetSystemMetrics( SM_CXSMICON ),
 623                                                      GetSystemMetrics( SM_CYSMICON ), 0 );
 624                 }
 625                 else if (lParam && wndPtr->hIconSmall2)
 626                 {
 627                     DestroyIcon( wndPtr->hIconSmall2 );
 628                     wndPtr->hIconSmall2 = NULL;
 629                 }
 630                 wndPtr->hIconSmall = (HICON)lParam;
 631                 break;
 632             case ICON_BIG:
 633                 ret = wndPtr->hIcon;
 634                 if (wndPtr->hIconSmall2)
 635                 {
 636                     DestroyIcon( wndPtr->hIconSmall2 );
 637                     wndPtr->hIconSmall2 = NULL;
 638                 }
 639                 if (lParam && !wndPtr->hIconSmall)
 640                 {
 641                     wndPtr->hIconSmall2 = CopyImage( (HICON)lParam, IMAGE_ICON,
 642                                                      GetSystemMetrics( SM_CXSMICON ),
 643                                                      GetSystemMetrics( SM_CYSMICON ), 0 );
 644                 }
 645                 wndPtr->hIcon = (HICON)lParam;
 646                 break;
 647             default:
 648                 ret = 0;
 649                 break;
 650             }
 651             WIN_ReleasePtr( wndPtr );
 652
 653             USER_Driver->pSetWindowIcon( hwnd, wParam, (HICON)lParam );
 654
 655             if( (GetWindowLongW( hwnd, GWL_STYLE ) & WS_CAPTION) == WS_CAPTION )
 656                 NC_HandleNCPaint( hwnd , (HRGN)1 );  /* Repaint caption */
 657
 658             return (LRESULT)ret;
 659         }
 660
 661     case WM_GETICON:
 662         {
 663             HICON ret;
 664             WND *wndPtr = WIN_GetPtr( hwnd );
 665
 666             switch(wParam)
 667             {
 668             case ICON_SMALL:
 669                 ret = wndPtr->hIconSmall;
 670                 break;
 671             case ICON_BIG:
 672                 ret = wndPtr->hIcon;
 673                 break;
 674             case ICON_SMALL2:
 675                 ret = wndPtr->hIconSmall ? wndPtr->hIconSmall : wndPtr->hIconSmall2;
 676                 break;
 677             default:
 678                 ret = 0;
 679                 break;
 680             }
 681             WIN_ReleasePtr( wndPtr );
 682             return (LRESULT)ret;
 683         }
 684
 685     case WM_HELP:
 686         SendMessageW( GetParent(hwnd), msg, wParam, lParam );
 687         break;
 688
 689     case WM_STYLECHANGED:
 690         if (wParam == GWL_STYLE && (GetWindowLongW( hwnd, GWL_EXSTYLE ) & WS_EX_LAYERED))
 691         {
 692             STYLESTRUCT *style = (STYLESTRUCT *)lParam;
 693             if ((style->styleOld ^ style->styleNew) & (WS_CAPTION|WS_THICKFRAME|WS_VSCROLL|WS_HSCROLL))
 694                 NtUserSetWindowPos( hwnd, 0, 0, 0, 0, 0, SWP_FRAMECHANGED | SWP_NOACTIVATE | SWP_NOZORDER |
 695                                     SWP_NOSIZE | SWP_NOMOVE | SWP_NOCLIENTSIZE | SWP_NOCLIENTMOVE );
 696         }
 697         break;
 698
 699     case WM_APPCOMMAND:
 700         {
 701             HWND parent = GetParent(hwnd);
 702             if(!parent)
 703                 HOOK_CallHooks(WH_SHELL, HSHELL_APPCOMMAND, wParam, lParam, TRUE);
 704             else
 705                 SendMessageW( parent, msg, wParam, lParam );
 706             break;
 707         }
 708     case WM_KEYF1:
 709         {
 710             HELPINFO hi;
 711
 712             hi.cbSize = sizeof(HELPINFO);
 713             GetCursorPos( &hi.MousePos );
 714             if (MENU_IsMenuActive())
 715             {
 716                 hi.iContextType = HELPINFO_MENUITEM;
 717                 hi.hItemHandle = MENU_IsMenuActive();
 718                 hi.iCtrlId = MenuItemFromPoint( hwnd, hi.hItemHandle, hi.MousePos );
 719                 hi.dwContextId = GetMenuContextHelpId( hi.hItemHandle );
 720             }
 721             else
 722             {
 723                 hi.iContextType = HELPINFO_WINDOW;
 724                 hi.hItemHandle = hwnd;
 725                 hi.iCtrlId = GetWindowLongPtrA( hwnd, GWLP_ID );
 726                 hi.dwContextId = GetWindowContextHelpId( hwnd );
 727             }
 728             SendMessageW( hwnd, WM_HELP, 0, (LPARAM)&hi );
 729             break;
 730         }
 731
 732     case WM_INPUTLANGCHANGEREQUEST:
 733         NtUserActivateKeyboardLayout( (HKL)lParam, 0 );
 734         break;
 735
 736     case WM_INPUTLANGCHANGE:
 737         {
 738             struct user_thread_info *info = get_user_thread_info();
 739             int count = 0;
 740             HWND *win_array = WIN_ListChildren( hwnd );
 741             info->kbd_layout = (HKL)lParam;
 742
 743             if (!win_array)
 744                 break;
 745             while (win_array[count])
 746                 SendMessageW( win_array[count++], WM_INPUTLANGCHANGE, wParam, lParam);
 747             HeapFree(GetProcessHeap(),0,win_array);
 748             break;
 749         }
 750
 751     }
 752
 753     return 0;
 754 }
 755
 756 static LPARAM DEFWND_GetTextA( WND *wndPtr, LPSTR dest, WPARAM wParam )
 757 {
 758     LPARAM result = 0;
 759
 760     __TRY
 761     {
 762         if (wndPtr->text)
 763         {
 764             if (!WideCharToMultiByte( CP_ACP, 0, wndPtr->text, -1,
 765                                       dest, wParam, NULL, NULL )) dest[wParam-1] = 0;
 766             result = strlen( dest );
 767         }
 768         else dest[0] = '\0';
 769     }
 770     __EXCEPT_PAGE_FAULT
 771     {
 772         return 0;
 773     }
 774     __ENDTRY
 775     return result;
 776 }
 777
 778 /***********************************************************************
 779  *              DefWindowProcA (USER32.@)
 780  *
 781  * See DefWindowProcW.
 782  */
 783 LRESULT WINAPI DefWindowProcA( HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam )
 784 {
 785     LRESULT result = 0;
 786     HWND full_handle;
 787
 788     if (!(full_handle = WIN_IsCurrentProcess( hwnd )))
 789     {
 790         if (!IsWindow( hwnd )) return 0;
 791         ERR( "called for other process window %p\n", hwnd );
 792         return 0;
 793     }
 794     hwnd = full_handle;
 795
 796     SPY_EnterMessage( SPY_DEFWNDPROC, hwnd, msg, wParam, lParam );
 797
 798     switch(msg)
 799     {
 800     case WM_NCCREATE:
 801         if (lParam)
 802         {
 803             CREATESTRUCTA *cs = (CREATESTRUCTA *)lParam;
 804
 805             DEFWND_SetTextA( hwnd, cs->lpszName );
 806             result = 1;
 807
 808             if(cs->style & (WS_HSCROLL | WS_VSCROLL))
 809             {
 810                 SCROLLINFO si = {sizeof si, SIF_ALL, 0, 100, 0, 0, 0};
 811                 SetScrollInfo( hwnd, SB_HORZ, &si, FALSE );
 812                 SetScrollInfo( hwnd, SB_VERT, &si, FALSE );
 813             }
 814         }
 815         break;
 816
 817     case WM_GETTEXTLENGTH:
 818         {
 819             WND *wndPtr = WIN_GetPtr( hwnd );
 820             if (wndPtr && wndPtr->text)
 821                 result = WideCharToMultiByte( CP_ACP, 0, wndPtr->text, lstrlenW(wndPtr->text),
 822                                               NULL, 0, NULL, NULL );
 823             WIN_ReleasePtr( wndPtr );
 824         }
 825         break;
 826
 827     case WM_GETTEXT:
 828         if (wParam)
 829         {
 830             LPSTR dest = (LPSTR)lParam;
 831             WND *wndPtr = WIN_GetPtr( hwnd );
 832
 833             if (!wndPtr) break;
 834             result = DEFWND_GetTextA( wndPtr, dest, wParam );
 835
 836             WIN_ReleasePtr( wndPtr );
 837         }
 838         break;
 839
 840     case WM_SETTEXT:
 841         if (!DEFWND_SetTextA( hwnd, (LPCSTR)lParam ))
 842             break;
 843         if( (GetWindowLongW( hwnd, GWL_STYLE ) & WS_CAPTION) == WS_CAPTION )
 844             NC_HandleNCPaint( hwnd , (HRGN)1 );  /* Repaint caption */
 845         result = 1; /* success. FIXME: check text length */
 846         break;
 847
 848     case WM_IME_CHAR:
 849         if (HIBYTE(wParam)) PostMessageA( hwnd, WM_CHAR, HIBYTE(wParam), lParam );
 850         PostMessageA( hwnd, WM_CHAR, LOBYTE(wParam), lParam );
 851         break;
 852
 853     case WM_IME_KEYDOWN:
 854         result = PostMessageA( hwnd, WM_KEYDOWN, wParam, lParam );
 855         break;
 856
 857     case WM_IME_KEYUP:
 858         result = PostMessageA( hwnd, WM_KEYUP, wParam, lParam );
 859         break;
 860
 861     case WM_IME_COMPOSITION:
 862         if (lParam & GCS_RESULTSTR)
 863         {
 864             LONG size, i;
 865             unsigned char lead = 0;
 866             char *buf = NULL;
 867             HIMC himc = ImmGetContext( hwnd );
 868
 869             if (himc)
 870             {
 871                 if ((size = ImmGetCompositionStringA( himc, GCS_RESULTSTR, NULL, 0 )))
 872                 {
 873                     if (!(buf = HeapAlloc( GetProcessHeap(), 0, size ))) size = 0;
 874                     else size = ImmGetCompositionStringA( himc, GCS_RESULTSTR, buf, size );
 875                 }
 876                 ImmReleaseContext( hwnd, himc );
 877
 878                 for (i = 0; i < size; i++)
 879                 {
 880                     unsigned char c = buf[i];
 881                     if (!lead)
 882                     {
 883                         if (IsDBCSLeadByte( c ))
 884                             lead = c;
 885                         else
 886                             SendMessageA( hwnd, WM_IME_CHAR, c, 1 );
 887                     }
 888                     else
 889                     {
 890                         SendMessageA( hwnd, WM_IME_CHAR, MAKEWORD(c, lead), 1 );
 891                         lead = 0;
 892                     }
 893                 }
 894                 HeapFree( GetProcessHeap(), 0, buf );
 895             }
 896         }
 897         /* fall through */
 898     case WM_IME_STARTCOMPOSITION:
 899     case WM_IME_ENDCOMPOSITION:
 900     case WM_IME_SELECT:
 901     case WM_IME_NOTIFY:
 902     case WM_IME_CONTROL:
 903         {
 904             HWND hwndIME = ImmGetDefaultIMEWnd( hwnd );
 905             if (hwndIME)
 906                 result = SendMessageA( hwndIME, msg, wParam, lParam );
 907         }
 908         break;
 909     case WM_IME_SETCONTEXT:
 910         {
 911             HWND hwndIME = ImmGetDefaultIMEWnd( hwnd );
 912             if (hwndIME) result = ImmIsUIMessageA( hwndIME, msg, wParam, lParam );
 913         }
 914         break;
 915
 916     case WM_SYSCHAR:
 917     {
 918         CHAR ch = LOWORD(wParam);
 919         WCHAR wch;
 920         MultiByteToWideChar(CP_ACP, 0, &ch, 1, &wch, 1);
 921         wParam = MAKEWPARAM( wch, HIWORD(wParam) );
 922     }
 923     /* fall through */
 924     default:
 925         result = DEFWND_DefWinProc( hwnd, msg, wParam, lParam );
 926         break;
 927     }
 928
 929     SPY_ExitMessage( SPY_RESULT_DEFWND, hwnd, msg, result, wParam, lParam );
 930     return result;
 931 }
 932
 933
 934 static LPARAM DEFWND_GetTextW( WND *wndPtr, LPWSTR dest, WPARAM wParam )
 935 {
 936     LPARAM result = 0;
 937
 938     __TRY
 939     {
 940         if (wndPtr->text)
 941         {
 942             lstrcpynW( dest, wndPtr->text, wParam );
 943             result = lstrlenW( dest );
 944         }
 945         else dest[0] = '\0';
 946     }
 947     __EXCEPT_PAGE_FAULT
 948     {
 949         return 0;
 950     }
 951     __ENDTRY
 952
 953     return result;
 954 }
 955
 956 /***********************************************************************
 957  *              DefWindowProcW (USER32.@) Calls default window message handler
 958  *
 959  * Calls default window procedure for messages not processed
 960  *  by application.
 961  *
 962  *  RETURNS
 963  *     Return value is dependent upon the message.
 964 */
 965 LRESULT WINAPI DefWindowProcW(
 966     HWND hwnd,      /* [in] window procedure receiving message */
 967     UINT msg,       /* [in] message identifier */
 968     WPARAM wParam,  /* [in] first message parameter */
 969     LPARAM lParam )   /* [in] second message parameter */
 970 {
 971     LRESULT result = 0;
 972     HWND full_handle;
 973
 974     if (!(full_handle = WIN_IsCurrentProcess( hwnd )))
 975     {
 976         if (!IsWindow( hwnd )) return 0;
 977         ERR( "called for other process window %p\n", hwnd );
 978         return 0;
 979     }
 980     hwnd = full_handle;
 981     SPY_EnterMessage( SPY_DEFWNDPROC, hwnd, msg, wParam, lParam );
 982
 983     switch(msg)
 984     {
 985     case WM_NCCREATE:
 986         if (lParam)
 987         {
 988             CREATESTRUCTW *cs = (CREATESTRUCTW *)lParam;
 989
 990             DEFWND_SetTextW( hwnd, cs->lpszName );
 991             result = 1;
 992
 993             if(cs->style & (WS_HSCROLL | WS_VSCROLL))
 994             {
 995                 SCROLLINFO si = {sizeof si, SIF_ALL, 0, 100, 0, 0, 0};
 996                 SetScrollInfo( hwnd, SB_HORZ, &si, FALSE );
 997                 SetScrollInfo( hwnd, SB_VERT, &si, FALSE );
 998             }
 999         }
1000         break;
1001
1002     case WM_GETTEXTLENGTH:
1003         {
1004             WND *wndPtr = WIN_GetPtr( hwnd );
1005             if (wndPtr && wndPtr->text) result = (LRESULT)lstrlenW(wndPtr->text);
1006             WIN_ReleasePtr( wndPtr );
1007         }
1008         break;
1009
1010     case WM_GETTEXT:
1011         if (wParam)
1012         {
1013             LPWSTR dest = (LPWSTR)lParam;
1014             WND *wndPtr = WIN_GetPtr( hwnd );
1015
1016             if (!wndPtr) break;
1017             result = DEFWND_GetTextW( wndPtr, dest, wParam );
1018             WIN_ReleasePtr( wndPtr );
1019         }
1020         break;
1021
1022     case WM_SETTEXT:
1023         if (!DEFWND_SetTextW( hwnd, (LPCWSTR)lParam ))
1024             break;
1025         if( (GetWindowLongW( hwnd, GWL_STYLE ) & WS_CAPTION) == WS_CAPTION )
1026             NC_HandleNCPaint( hwnd , (HRGN)1 );  /* Repaint caption */
1027         result = 1; /* success. FIXME: check text length */
1028         break;
1029
1030     case WM_IME_CHAR:
1031         PostMessageW( hwnd, WM_CHAR, wParam, lParam );
1032         break;
1033
1034     case WM_IME_KEYDOWN:
1035         result = PostMessageW( hwnd, WM_KEYDOWN, wParam, lParam );
1036         break;
1037
1038     case WM_IME_KEYUP:
1039         result = PostMessageW( hwnd, WM_KEYUP, wParam, lParam );
1040         break;
1041
1042     case WM_IME_SETCONTEXT:
1043         {
1044             HWND hwndIME = ImmGetDefaultIMEWnd( hwnd );
1045             if (hwndIME) result = ImmIsUIMessageW( hwndIME, msg, wParam, lParam );
1046         }
1047         break;
1048
1049     case WM_IME_COMPOSITION:
1050         if (lParam & GCS_RESULTSTR)
1051         {
1052             LONG size, i;
1053             WCHAR *buf = NULL;
1054             HIMC himc = ImmGetContext( hwnd );
1055
1056             if (himc)
1057             {
1058                 if ((size = ImmGetCompositionStringW( himc, GCS_RESULTSTR, NULL, 0 )))
1059                 {
1060                     if (!(buf = HeapAlloc( GetProcessHeap(), 0, size * sizeof(WCHAR) ))) size = 0;
1061                     else size = ImmGetCompositionStringW( himc, GCS_RESULTSTR, buf, size * sizeof(WCHAR) );
1062                 }
1063                 ImmReleaseContext( hwnd, himc );
1064
1065                 for (i = 0; i < size / sizeof(WCHAR); i++)
1066                     SendMessageW( hwnd, WM_IME_CHAR, buf[i], 1 );
1067                 HeapFree( GetProcessHeap(), 0, buf );
1068             }
1069         }
1070         /* fall through */
1071     case WM_IME_STARTCOMPOSITION:
1072     case WM_IME_ENDCOMPOSITION:
1073     case WM_IME_SELECT:
1074     case WM_IME_NOTIFY:
1075     case WM_IME_CONTROL:
1076         {
1077             HWND hwndIME = ImmGetDefaultIMEWnd( hwnd );
1078             if (hwndIME)
1079                 result = SendMessageW( hwndIME, msg, wParam, lParam );
1080         }
1081         break;
1082
1083     default:
1084         result = DEFWND_DefWinProc( hwnd, msg, wParam, lParam );
1085         break;
1086     }
1087     SPY_ExitMessage( SPY_RESULT_DEFWND, hwnd, msg, result, wParam, lParam );
1088     return result;
1089 }