windows/defdlg.c

   1 /*
   2  * Default dialog procedure
   3  *
   4  * Copyright 1993, 1996 Alexandre Julliard
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include "windef.h"
  22 #include "winbase.h"
  23 #include "wingdi.h"
  24 #include "wine/winuser16.h"
  25 #include "controls.h"
  26 #include "win.h"
  27 #include "winproc.h"
  28 #include "wine/debug.h"
  29
  30 WINE_DEFAULT_DEBUG_CHANNEL(dialog);
  31
  32
  33 /***********************************************************************
  34  *           DEFDLG_GetDlgProc
  35  */
  36 static WNDPROC DEFDLG_GetDlgProc( HWND hwnd )
  37 {
  38     WNDPROC ret;
  39     WND *wndPtr = WIN_GetPtr( hwnd );
  40
  41     if (!wndPtr) return 0;
  42     if (wndPtr == WND_OTHER_PROCESS)
  43     {
  44         ERR( "cannot get dlg proc %p from other process\n", hwnd );
  45         return 0;
  46     }
  47     ret = *(WNDPROC *)((char *)wndPtr->wExtra + DWL_DLGPROC);
  48     WIN_ReleasePtr( wndPtr );
  49     return ret;
  50 }
  51
  52 /***********************************************************************
  53  *           DEFDLG_SetFocus
  54  *
  55  * Set the focus to a control of the dialog, selecting the text if
  56  * the control is an edit dialog.
  57  */
  58 static void DEFDLG_SetFocus( HWND hwndDlg, HWND hwndCtrl )
  59 {
  60     HWND hwndPrev = GetFocus();
  61
  62     if (IsChild( hwndDlg, hwndPrev ))
  63     {
  64         if (SendMessageW( hwndPrev, WM_GETDLGCODE, 0, 0 ) & DLGC_HASSETSEL)
  65             SendMessageW( hwndPrev, EM_SETSEL, -1, 0 );
  66     }
  67     if (SendMessageW( hwndCtrl, WM_GETDLGCODE, 0, 0 ) & DLGC_HASSETSEL)
  68         SendMessageW( hwndCtrl, EM_SETSEL, 0, -1 );
  69     SetFocus( hwndCtrl );
  70 }
  71
  72
  73 /***********************************************************************
  74  *           DEFDLG_SaveFocus
  75  */
  76 static void DEFDLG_SaveFocus( HWND hwnd )
  77 {
  78     DIALOGINFO *infoPtr;
  79     HWND hwndFocus = GetFocus();
  80
  81     if (!hwndFocus || !IsChild( hwnd, hwndFocus )) return;
  82     if (!(infoPtr = DIALOG_get_info( hwnd ))) return;
  83     infoPtr->hwndFocus = hwndFocus;
  84     /* Remove default button */
  85 }
  86
  87
  88 /***********************************************************************
  89  *           DEFDLG_RestoreFocus
  90  */
  91 static void DEFDLG_RestoreFocus( HWND hwnd )
  92 {
  93     DIALOGINFO *infoPtr;
  94
  95     if (IsIconic( hwnd )) return;
  96     if (!(infoPtr = DIALOG_get_info( hwnd ))) return;
  97     if (!IsWindow( infoPtr->hwndFocus )) return;
  98     /* Don't set the focus back to controls if EndDialog is already called.*/
  99     if (!(infoPtr->flags & DF_END))
 100     {
 101         DEFDLG_SetFocus( hwnd, infoPtr->hwndFocus );
 102         return;
 103     }
 104     /* This used to set infoPtr->hwndFocus to NULL for no apparent reason,
 105        sometimes losing focus when receiving WM_SETFOCUS messages. */
 106 }
 107
 108
 109 /***********************************************************************
 110  *           DEFDLG_FindDefButton
 111  *
 112  * Find the current default push-button.
 113  */
 114 static HWND DEFDLG_FindDefButton( HWND hwndDlg )
 115 {
 116     HWND hwndChild = GetWindow( hwndDlg, GW_CHILD );
 117     while (hwndChild)
 118     {
 119         if (SendMessageW( hwndChild, WM_GETDLGCODE, 0, 0 ) & DLGC_DEFPUSHBUTTON)
 120             break;
 121         hwndChild = GetWindow( hwndChild, GW_HWNDNEXT );
 122     }
 123     return hwndChild;
 124 }
 125
 126
 127 /***********************************************************************
 128  *           DEFDLG_SetDefButton
 129  *
 130  * Set the new default button to be hwndNew.
 131  */
 132 static BOOL DEFDLG_SetDefButton( HWND hwndDlg, DIALOGINFO *dlgInfo,
 133                                    HWND hwndNew )
 134 {
 135     DWORD dlgcode=0; /* initialize just to avoid a warning */
 136     if (hwndNew &&
 137         !((dlgcode=SendMessageW(hwndNew, WM_GETDLGCODE, 0, 0 ))
 138             & (DLGC_UNDEFPUSHBUTTON | DLGC_BUTTON)))
 139         return FALSE;  /* Destination is not a push button */
 140
 141     if (dlgInfo->idResult)  /* There's already a default pushbutton */
 142     {
 143         HWND hwndOld = GetDlgItem( hwndDlg, dlgInfo->idResult );
 144         if (SendMessageA( hwndOld, WM_GETDLGCODE, 0, 0) & DLGC_DEFPUSHBUTTON)
 145             SendMessageA( hwndOld, BM_SETSTYLE, BS_PUSHBUTTON, TRUE );
 146     }
 147     if (hwndNew)
 148     {
 149         if(dlgcode==DLGC_UNDEFPUSHBUTTON)
 150             SendMessageA( hwndNew, BM_SETSTYLE, BS_DEFPUSHBUTTON, TRUE );
 151         dlgInfo->idResult = GetDlgCtrlID( hwndNew );
 152     }
 153     else dlgInfo->idResult = 0;
 154     return TRUE;
 155 }
 156
 157
 158 /***********************************************************************
 159  *           DEFDLG_Proc
 160  *
 161  * Implementation of DefDlgProc(). Only handle messages that need special
 162  * handling for dialogs.
 163  */
 164 static LRESULT DEFDLG_Proc( HWND hwnd, UINT msg, WPARAM wParam,
 165                             LPARAM lParam, DIALOGINFO *dlgInfo )
 166 {
 167     switch(msg)
 168     {
 169         case WM_ERASEBKGND:
 170         {
 171             HBRUSH brush = (HBRUSH)SendMessageW( hwnd, WM_CTLCOLORDLG, wParam, (LPARAM)hwnd );
 172             if (!brush) brush = (HBRUSH)DefWindowProcW( hwnd, WM_CTLCOLORDLG, wParam, (LPARAM)hwnd );
 173             if (brush)
 174             {
 175                 RECT rect;
 176                 HDC hdc = (HDC)wParam;
 177                 GetClientRect( hwnd, &rect );
 178                 DPtoLP( hdc, (LPPOINT)&rect, 2 );
 179                 FillRect( hdc, &rect, brush );
 180             }
 181             return 1;
 182         }
 183         case WM_NCDESTROY:
 184             if ((dlgInfo = (DIALOGINFO *)SetWindowLongW( hwnd, DWL_WINE_DIALOGINFO, 0 )))
 185             {
 186                 /* Free dialog heap (if created) */
 187                 if (dlgInfo->hDialogHeap)
 188                 {
 189                     GlobalUnlock16(dlgInfo->hDialogHeap);
 190                     GlobalFree16(dlgInfo->hDialogHeap);
 191                 }
 192                 if (dlgInfo->hUserFont) DeleteObject( dlgInfo->hUserFont );
 193                 if (dlgInfo->hMenu) DestroyMenu( dlgInfo->hMenu );
 194                 WINPROC_FreeProc( DEFDLG_GetDlgProc( hwnd ), WIN_PROC_WINDOW );
 195                 HeapFree( GetProcessHeap(), 0, dlgInfo );
 196             }
 197               /* Window clean-up */
 198             return DefWindowProcA( hwnd, msg, wParam, lParam );
 199
 200         case WM_SHOWWINDOW:
 201             if (!wParam) DEFDLG_SaveFocus( hwnd );
 202             return DefWindowProcA( hwnd, msg, wParam, lParam );
 203
 204         case WM_ACTIVATE:
 205             if (wParam) DEFDLG_RestoreFocus( hwnd );
 206             else DEFDLG_SaveFocus( hwnd );
 207             return 0;
 208
 209         case WM_SETFOCUS:
 210             DEFDLG_RestoreFocus( hwnd );
 211             return 0;
 212
 213         case DM_SETDEFID:
 214             if (dlgInfo && !(dlgInfo->flags & DF_END))
 215                 DEFDLG_SetDefButton( hwnd, dlgInfo, wParam ? GetDlgItem( hwnd, wParam ) : 0 );
 216             return 1;
 217
 218         case DM_GETDEFID:
 219             if (dlgInfo && !(dlgInfo->flags & DF_END))
 220             {
 221                 HWND hwndDefId;
 222                 if (dlgInfo->idResult)
 223                     return MAKELONG( dlgInfo->idResult, DC_HASDEFID );
 224                 if ((hwndDefId = DEFDLG_FindDefButton( hwnd )))
 225                     return MAKELONG( GetDlgCtrlID( hwndDefId ), DC_HASDEFID);
 226             }
 227             return 0;
 228
 229         case WM_NEXTDLGCTL:
 230             if (dlgInfo)
 231             {
 232                 HWND hwndDest = (HWND)wParam;
 233                 if (!lParam)
 234                     hwndDest = GetNextDlgTabItem(hwnd, GetFocus(), wParam);
 235                 if (hwndDest) DEFDLG_SetFocus( hwnd, hwndDest );
 236                 DEFDLG_SetDefButton( hwnd, dlgInfo, hwndDest );
 237             }
 238             return 0;
 239
 240         case WM_ENTERMENULOOP:
 241         case WM_LBUTTONDOWN:
 242         case WM_NCLBUTTONDOWN:
 243             {
 244                 HWND hwndFocus = GetFocus();
 245                 if (hwndFocus)
 246                 {
 247                     /* always make combo box hide its listbox control */
 248                     if (!SendMessageA( hwndFocus, CB_SHOWDROPDOWN, FALSE, 0 ))
 249                         SendMessageA( GetParent(hwndFocus), CB_SHOWDROPDOWN, FALSE, 0 );
 250                 }
 251             }
 252             return DefWindowProcA( hwnd, msg, wParam, lParam );
 253
 254         case WM_GETFONT:
 255             return dlgInfo ? (LRESULT)dlgInfo->hUserFont : 0;
 256
 257         case WM_CLOSE:
 258             PostMessageA( hwnd, WM_COMMAND, MAKEWPARAM(IDCANCEL, BN_CLICKED),
 259                             (LPARAM)GetDlgItem( hwnd, IDCANCEL ) );
 260             return 0;
 261
 262         case WM_NOTIFYFORMAT:
 263             return DefWindowProcA( hwnd, msg, wParam, lParam );
 264     }
 265     return 0;
 266 }
 267
 268 /***********************************************************************
 269  *           DEFDLG_Epilog
 270  */
 271 static LRESULT DEFDLG_Epilog(HWND hwnd, UINT msg, BOOL fResult)
 272 {
 273     /* see SDK 3.1 */
 274
 275     if ((msg >= WM_CTLCOLORMSGBOX && msg <= WM_CTLCOLORSTATIC) ||
 276          msg == WM_CTLCOLOR || msg == WM_COMPAREITEM ||
 277          msg == WM_VKEYTOITEM || msg == WM_CHARTOITEM ||
 278          msg == WM_QUERYDRAGICON || msg == WM_INITDIALOG)
 279         return fResult;
 280
 281     return GetWindowLongA( hwnd, DWL_MSGRESULT );
 282 }
 283
 284 /***********************************************************************
 285  *              DefDlgProc (USER.308)
 286  */
 287 LRESULT WINAPI DefDlgProc16( HWND16 hwnd, UINT16 msg, WPARAM16 wParam,
 288                              LPARAM lParam )
 289 {
 290     WNDPROC16 dlgproc;
 291     HWND hwnd32 = WIN_Handle32( hwnd );
 292     BOOL result = FALSE;
 293
 294     SetWindowLongW( hwnd32, DWL_MSGRESULT, 0 );
 295
 296     if ((dlgproc = (WNDPROC16)DEFDLG_GetDlgProc( hwnd32 )))
 297     {
 298         /* Call dialog procedure */
 299         result = CallWindowProc16( dlgproc, hwnd, msg, wParam, lParam );
 300         /* 16 bit dlg procs only return BOOL16 */
 301         if( WINPROC_GetProcType( (WNDPROC)dlgproc ) == WIN_PROC_16 )
 302             result = LOWORD(result);
 303     }
 304
 305     if (!result && IsWindow(hwnd32))
 306     {
 307         /* callback didn't process this message */
 308
 309         switch(msg)
 310         {
 311             case WM_ERASEBKGND:
 312             case WM_SHOWWINDOW:
 313             case WM_ACTIVATE:
 314             case WM_SETFOCUS:
 315             case DM_SETDEFID:
 316             case DM_GETDEFID:
 317             case WM_NEXTDLGCTL:
 318             case WM_GETFONT:
 319             case WM_CLOSE:
 320             case WM_NCDESTROY:
 321             case WM_ENTERMENULOOP:
 322             case WM_LBUTTONDOWN:
 323             case WM_NCLBUTTONDOWN:
 324                 return DEFDLG_Proc( hwnd32, msg, (WPARAM)wParam, lParam, DIALOG_get_info(hwnd32) );
 325             case WM_INITDIALOG:
 326             case WM_VKEYTOITEM:
 327             case WM_COMPAREITEM:
 328             case WM_CHARTOITEM:
 329                 break;
 330
 331             default:
 332                 return DefWindowProc16( hwnd, msg, wParam, lParam );
 333         }
 334     }
 335     return DEFDLG_Epilog( hwnd32, msg, result);
 336 }
 337
 338
 339 /***********************************************************************
 340  *              DefDlgProcA (USER32.@)
 341  */
 342 LRESULT WINAPI DefDlgProcA( HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam )
 343 {
 344     WNDPROC dlgproc;
 345     BOOL result = FALSE;
 346
 347     SetWindowLongW( hwnd, DWL_MSGRESULT, 0 );
 348
 349     if ((dlgproc = DEFDLG_GetDlgProc( hwnd )))
 350     {
 351         /* Call dialog procedure */
 352         result = CallWindowProcA( dlgproc, hwnd, msg, wParam, lParam );
 353         /* 16 bit dlg procs only return BOOL16 */
 354         if( WINPROC_GetProcType( dlgproc ) == WIN_PROC_16 )
 355             result = LOWORD(result);
 356     }
 357
 358     if (!result && IsWindow(hwnd))
 359     {
 360         /* callback didn't process this message */
 361
 362         switch(msg)
 363         {
 364             case WM_ERASEBKGND:
 365             case WM_SHOWWINDOW:
 366             case WM_ACTIVATE:
 367             case WM_SETFOCUS:
 368             case DM_SETDEFID:
 369             case DM_GETDEFID:
 370             case WM_NEXTDLGCTL:
 371             case WM_GETFONT:
 372             case WM_CLOSE:
 373             case WM_NCDESTROY:
 374             case WM_ENTERMENULOOP:
 375             case WM_LBUTTONDOWN:
 376             case WM_NCLBUTTONDOWN:
 377                  return DEFDLG_Proc( hwnd, msg, wParam, lParam, DIALOG_get_info(hwnd) );
 378             case WM_INITDIALOG:
 379             case WM_VKEYTOITEM:
 380             case WM_COMPAREITEM:
 381             case WM_CHARTOITEM:
 382                  break;
 383
 384             default:
 385                  return DefWindowProcA( hwnd, msg, wParam, lParam );
 386         }
 387     }
 388     return DEFDLG_Epilog(hwnd, msg, result);
 389 }
 390
 391
 392 /***********************************************************************
 393  *              DefDlgProcW (USER32.@)
 394  */
 395 LRESULT WINAPI DefDlgProcW( HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam )
 396 {
 397     BOOL result = FALSE;
 398     WNDPROC dlgproc;
 399
 400     SetWindowLongW( hwnd, DWL_MSGRESULT, 0 );
 401
 402     if ((dlgproc = DEFDLG_GetDlgProc( hwnd )))
 403     {
 404         /* Call dialog procedure */
 405         result = CallWindowProcW( dlgproc, hwnd, msg, wParam, lParam );
 406         /* 16 bit dlg procs only return BOOL16 */
 407         if( WINPROC_GetProcType( dlgproc ) == WIN_PROC_16 )
 408             result = LOWORD(result);
 409     }
 410
 411     if (!result && IsWindow(hwnd))
 412     {
 413         /* callback didn't process this message */
 414
 415         switch(msg)
 416         {
 417             case WM_ERASEBKGND:
 418             case WM_SHOWWINDOW:
 419             case WM_ACTIVATE:
 420             case WM_SETFOCUS:
 421             case DM_SETDEFID:
 422             case DM_GETDEFID:
 423             case WM_NEXTDLGCTL:
 424             case WM_GETFONT:
 425             case WM_CLOSE:
 426             case WM_NCDESTROY:
 427             case WM_ENTERMENULOOP:
 428             case WM_LBUTTONDOWN:
 429             case WM_NCLBUTTONDOWN:
 430                  return DEFDLG_Proc( hwnd, msg, wParam, lParam, DIALOG_get_info(hwnd) );
 431             case WM_INITDIALOG:
 432             case WM_VKEYTOITEM:
 433             case WM_COMPAREITEM:
 434             case WM_CHARTOITEM:
 435                  break;
 436
 437             default:
 438                  return DefWindowProcW( hwnd, msg, wParam, lParam );
 439         }
 440     }
 441     return DEFDLG_Epilog(hwnd, msg, result);
 442 }