dlls/user/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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include <stdarg.h>
  22
  23 #include "windef.h"
  24 #include "winbase.h"
  25 #include "wingdi.h"
  26 #include "wine/winuser16.h"
  27 #include "controls.h"
  28 #include "win.h"
  29 #include "winproc.h"
  30 #include "wine/debug.h"
  31
  32 WINE_DEFAULT_DEBUG_CHANNEL(dialog);
  33
  34
  35 /***********************************************************************
  36  *           DEFDLG_GetDlgProc
  37  */
  38 static DLGPROC DEFDLG_GetDlgProc( HWND hwnd )
  39 {
  40     DLGPROC ret;
  41     WND *wndPtr = WIN_GetPtr( hwnd );
  42
  43     if (!wndPtr) return 0;
  44     if (wndPtr == WND_OTHER_PROCESS)
  45     {
  46         ERR( "cannot get dlg proc %p from other process\n", hwnd );
  47         return 0;
  48     }
  49     ret = *(DLGPROC *)((char *)wndPtr->wExtra + DWLP_DLGPROC);
  50     WIN_ReleasePtr( wndPtr );
  51     return ret;
  52 }
  53
  54 /***********************************************************************
  55  *           DEFDLG_SetFocus
  56  *
  57  * Set the focus to a control of the dialog, selecting the text if
  58  * the control is an edit dialog.
  59  */
  60 static void DEFDLG_SetFocus( HWND hwndDlg, HWND hwndCtrl )
  61 {
  62     HWND hwndPrev = GetFocus();
  63
  64     if (IsChild( hwndDlg, hwndPrev ))
  65     {
  66         if (SendMessageW( hwndPrev, WM_GETDLGCODE, 0, 0 ) & DLGC_HASSETSEL)
  67             SendMessageW( hwndPrev, EM_SETSEL, -1, 0 );
  68     }
  69     if (SendMessageW( hwndCtrl, WM_GETDLGCODE, 0, 0 ) & DLGC_HASSETSEL)
  70         SendMessageW( hwndCtrl, EM_SETSEL, 0, -1 );
  71     SetFocus( hwndCtrl );
  72 }
  73
  74
  75 /***********************************************************************
  76  *           DEFDLG_SaveFocus
  77  */
  78 static void DEFDLG_SaveFocus( HWND hwnd )
  79 {
  80     DIALOGINFO *infoPtr;
  81     HWND hwndFocus = GetFocus();
  82
  83     if (!hwndFocus || !IsChild( hwnd, hwndFocus )) return;
  84     if (!(infoPtr = DIALOG_get_info( hwnd, FALSE ))) return;
  85     infoPtr->hwndFocus = hwndFocus;
  86     /* Remove default button */
  87 }
  88
  89
  90 /***********************************************************************
  91  *           DEFDLG_RestoreFocus
  92  */
  93 static void DEFDLG_RestoreFocus( HWND hwnd )
  94 {
  95     DIALOGINFO *infoPtr;
  96
  97     if (IsIconic( hwnd )) return;
  98     if (!(infoPtr = DIALOG_get_info( hwnd, FALSE ))) return;
  99     /* Don't set the focus back to controls if EndDialog is already called.*/
 100     if (infoPtr->flags & DF_END) return;
 101     if (!IsWindow(infoPtr->hwndFocus) || infoPtr->hwndFocus == hwnd) {
 102         /* If no saved focus control exists, set focus to the first visible,
 103            non-disabled, WS_TABSTOP control in the dialog */
 104         infoPtr->hwndFocus = GetNextDlgTabItem( hwnd, 0, FALSE );
 105        if (!IsWindow( infoPtr->hwndFocus )) return;
 106     }
 107     SetFocus( infoPtr->hwndFocus );
 108
 109     /* This used to set infoPtr->hwndFocus to NULL for no apparent reason,
 110        sometimes losing focus when receiving WM_SETFOCUS messages. */
 111 }
 112
 113
 114 /***********************************************************************
 115  *           DEFDLG_FindDefButton
 116  *
 117  * Find the current default push-button.
 118  */
 119 static HWND DEFDLG_FindDefButton( HWND hwndDlg )
 120 {
 121     HWND hwndChild, hwndTmp;
 122
 123     hwndChild = GetWindow( hwndDlg, GW_CHILD );
 124     while (hwndChild)
 125     {
 126         if (SendMessageW( hwndChild, WM_GETDLGCODE, 0, 0 ) & DLGC_DEFPUSHBUTTON)
 127             break;
 128
 129         /* Recurse into WS_EX_CONTROLPARENT controls */
 130         if (GetWindowLongW( hwndChild, GWL_EXSTYLE ) & WS_EX_CONTROLPARENT)
 131         {
 132             LONG dsStyle = GetWindowLongW( hwndChild, GWL_STYLE );
 133             if ((dsStyle & WS_VISIBLE) && !(dsStyle & WS_DISABLED) &&
 134                 (hwndTmp = DEFDLG_FindDefButton(hwndChild)) != NULL)
 135            return hwndTmp;
 136         }
 137         hwndChild = GetWindow( hwndChild, GW_HWNDNEXT );
 138     }
 139     return hwndChild;
 140 }
 141
 142
 143 /***********************************************************************
 144  *           DEFDLG_SetDefId
 145  *
 146  * Set the default button id.
 147  */
 148 static BOOL DEFDLG_SetDefId( HWND hwndDlg, DIALOGINFO *dlgInfo, WPARAM wParam)
 149 {
 150     DWORD dlgcode=0; /* initialize just to avoid a warning */
 151     HWND hwndOld, hwndNew = GetDlgItem(hwndDlg, wParam);
 152     INT old_id = dlgInfo->idResult;
 153
 154     dlgInfo->idResult = wParam;
 155     if (hwndNew &&
 156         !((dlgcode=SendMessageW(hwndNew, WM_GETDLGCODE, 0, 0 ))
 157             & (DLGC_UNDEFPUSHBUTTON | DLGC_BUTTON)))
 158         return FALSE;  /* Destination is not a push button */
 159
 160     /* Make sure the old default control is a valid push button ID */
 161     hwndOld = GetDlgItem( hwndDlg, old_id );
 162     if (!hwndOld || !(SendMessageW( hwndOld, WM_GETDLGCODE, 0, 0) & DLGC_DEFPUSHBUTTON))
 163         hwndOld = DEFDLG_FindDefButton( hwndDlg );
 164     if (hwndOld && hwndOld != hwndNew)
 165         SendMessageW( hwndOld, BM_SETSTYLE, BS_PUSHBUTTON, TRUE );
 166
 167     if (hwndNew)
 168     {
 169         if(dlgcode & DLGC_UNDEFPUSHBUTTON)
 170             SendMessageW( hwndNew, BM_SETSTYLE, BS_DEFPUSHBUTTON, TRUE );
 171     }
 172     return TRUE;
 173 }
 174
 175
 176 /***********************************************************************
 177  *           DEFDLG_SetDefButton
 178  *
 179  * Set the new default button to be hwndNew.
 180  */
 181 static BOOL DEFDLG_SetDefButton( HWND hwndDlg, DIALOGINFO *dlgInfo, HWND hwndNew )
 182 {
 183     DWORD dlgcode=0; /* initialize just to avoid a warning */
 184     HWND hwndOld = GetDlgItem( hwndDlg, dlgInfo->idResult );
 185
 186     if (hwndNew &&
 187         !((dlgcode=SendMessageW(hwndNew, WM_GETDLGCODE, 0, 0 ))
 188             & (DLGC_UNDEFPUSHBUTTON | DLGC_DEFPUSHBUTTON)))
 189     {
 190         /**
 191          * Need to draw only default push button rectangle.
 192          * Since the next control is not a push button, need to draw the push
 193          * button rectangle for the default control.
 194          */
 195         hwndNew = hwndOld;
 196         dlgcode = SendMessageW(hwndNew, WM_GETDLGCODE, 0, 0 );
 197     }
 198
 199     /* Make sure the old default control is a valid push button ID */
 200     if (!hwndOld || !(SendMessageW( hwndOld, WM_GETDLGCODE, 0, 0) & DLGC_DEFPUSHBUTTON))
 201         hwndOld = DEFDLG_FindDefButton( hwndDlg );
 202     if (hwndOld && hwndOld != hwndNew)
 203         SendMessageW( hwndOld, BM_SETSTYLE, BS_PUSHBUTTON, TRUE );
 204
 205     if (hwndNew)
 206     {
 207         if(dlgcode & DLGC_UNDEFPUSHBUTTON)
 208             SendMessageW( hwndNew, BM_SETSTYLE, BS_DEFPUSHBUTTON, TRUE );
 209     }
 210     return TRUE;
 211 }
 212
 213
 214 /***********************************************************************
 215  *           DEFDLG_Proc
 216  *
 217  * Implementation of DefDlgProc(). Only handle messages that need special
 218  * handling for dialogs.
 219  */
 220 static LRESULT DEFDLG_Proc( HWND hwnd, UINT msg, WPARAM wParam,
 221                             LPARAM lParam, DIALOGINFO *dlgInfo )
 222 {
 223     switch(msg)
 224     {
 225         case WM_ERASEBKGND:
 226         {
 227             HBRUSH brush = (HBRUSH)SendMessageW( hwnd, WM_CTLCOLORDLG, wParam, (LPARAM)hwnd );
 228             if (!brush) brush = (HBRUSH)DefWindowProcW( hwnd, WM_CTLCOLORDLG, wParam, (LPARAM)hwnd );
 229             if (brush)
 230             {
 231                 RECT rect;
 232                 HDC hdc = (HDC)wParam;
 233                 GetClientRect( hwnd, &rect );
 234                 DPtoLP( hdc, (LPPOINT)&rect, 2 );
 235                 FillRect( hdc, &rect, brush );
 236             }
 237             return 1;
 238         }
 239         case WM_NCDESTROY:
 240             if ((dlgInfo = (DIALOGINFO *)SetWindowLongPtrW( hwnd, DWLP_WINE_DIALOGINFO, 0 )))
 241             {
 242                 /* Free dialog heap (if created) */
 243                 if (dlgInfo->hDialogHeap)
 244                 {
 245                     GlobalUnlock16(dlgInfo->hDialogHeap);
 246                     GlobalFree16(dlgInfo->hDialogHeap);
 247                 }
 248                 if (dlgInfo->hUserFont) DeleteObject( dlgInfo->hUserFont );
 249                 if (dlgInfo->hMenu) DestroyMenu( dlgInfo->hMenu );
 250                 HeapFree( GetProcessHeap(), 0, dlgInfo );
 251             }
 252               /* Window clean-up */
 253             return DefWindowProcA( hwnd, msg, wParam, lParam );
 254
 255         case WM_SHOWWINDOW:
 256             if (!wParam) DEFDLG_SaveFocus( hwnd );
 257             return DefWindowProcA( hwnd, msg, wParam, lParam );
 258
 259         case WM_ACTIVATE:
 260             if (wParam) DEFDLG_RestoreFocus( hwnd );
 261             else DEFDLG_SaveFocus( hwnd );
 262             return 0;
 263
 264         case WM_SETFOCUS:
 265             DEFDLG_RestoreFocus( hwnd );
 266             return 0;
 267
 268         case DM_SETDEFID:
 269             if (dlgInfo && !(dlgInfo->flags & DF_END))
 270                 DEFDLG_SetDefId( hwnd, dlgInfo, wParam );
 271             return 1;
 272
 273         case DM_GETDEFID:
 274             if (dlgInfo && !(dlgInfo->flags & DF_END))
 275             {
 276                 HWND hwndDefId;
 277                 if (dlgInfo->idResult)
 278                     return MAKELONG( dlgInfo->idResult, DC_HASDEFID );
 279                 if ((hwndDefId = DEFDLG_FindDefButton( hwnd )))
 280                     return MAKELONG( GetDlgCtrlID( hwndDefId ), DC_HASDEFID);
 281             }
 282             return 0;
 283
 284         case WM_NEXTDLGCTL:
 285             if (dlgInfo)
 286             {
 287                 HWND hwndDest = (HWND)wParam;
 288                 if (!lParam)
 289                     hwndDest = GetNextDlgTabItem(hwnd, GetFocus(), wParam);
 290                 if (hwndDest) DEFDLG_SetFocus( hwnd, hwndDest );
 291                 DEFDLG_SetDefButton( hwnd, dlgInfo, hwndDest );
 292             }
 293             return 0;
 294
 295         case WM_ENTERMENULOOP:
 296         case WM_LBUTTONDOWN:
 297         case WM_NCLBUTTONDOWN:
 298             {
 299                 HWND hwndFocus = GetFocus();
 300                 if (hwndFocus)
 301                 {
 302                     /* always make combo box hide its listbox control */
 303                     if (!SendMessageW( hwndFocus, CB_SHOWDROPDOWN, FALSE, 0 ))
 304                         SendMessageW( GetParent(hwndFocus), CB_SHOWDROPDOWN, FALSE, 0 );
 305                 }
 306             }
 307             return DefWindowProcA( hwnd, msg, wParam, lParam );
 308
 309         case WM_GETFONT:
 310             return dlgInfo ? (LRESULT)dlgInfo->hUserFont : 0;
 311
 312         case WM_CLOSE:
 313             PostMessageA( hwnd, WM_COMMAND, MAKEWPARAM(IDCANCEL, BN_CLICKED),
 314                             (LPARAM)GetDlgItem( hwnd, IDCANCEL ) );
 315             return 0;
 316     }
 317     return 0;
 318 }
 319
 320 /***********************************************************************
 321  *           DEFDLG_Epilog
 322  */
 323 static LRESULT DEFDLG_Epilog(HWND hwnd, UINT msg, BOOL fResult)
 324 {
 325     /* see SDK 3.1 */
 326
 327     if ((msg >= WM_CTLCOLORMSGBOX && msg <= WM_CTLCOLORSTATIC) ||
 328          msg == WM_CTLCOLOR || msg == WM_COMPAREITEM ||
 329          msg == WM_VKEYTOITEM || msg == WM_CHARTOITEM ||
 330          msg == WM_QUERYDRAGICON || msg == WM_INITDIALOG)
 331         return fResult;
 332
 333     return GetWindowLongPtrW( hwnd, DWLP_MSGRESULT );
 334 }
 335
 336 /***********************************************************************
 337 *               DIALOG_get_info
 338 *
 339 * Get the DIALOGINFO structure of a window, allocating it if needed
 340 * and 'create' is TRUE.
 341 */
 342 DIALOGINFO *DIALOG_get_info( HWND hwnd, BOOL create )
 343 {
 344     WND* wndPtr;
 345     DIALOGINFO* dlgInfo = (DIALOGINFO *)GetWindowLongPtrW( hwnd, DWLP_WINE_DIALOGINFO );
 346
 347     if(!dlgInfo && create)
 348     {
 349         if (!(dlgInfo = HeapAlloc( GetProcessHeap(), 0, sizeof(*dlgInfo) ))) return NULL;
 350         dlgInfo->hwndFocus   = 0;
 351         dlgInfo->hUserFont   = 0;
 352         dlgInfo->hMenu       = 0;
 353         dlgInfo->xBaseUnit   = 0;
 354         dlgInfo->yBaseUnit   = 0;
 355         dlgInfo->idResult    = 0;
 356         dlgInfo->flags       = 0;
 357         dlgInfo->hDialogHeap = 0;
 358         wndPtr = WIN_GetPtr( hwnd );
 359         if (wndPtr && wndPtr != WND_OTHER_PROCESS && wndPtr != WND_DESKTOP)
 360         {
 361             wndPtr->flags |= WIN_ISDIALOG;
 362             WIN_ReleasePtr( wndPtr );
 363             SetWindowLongPtrW( hwnd, DWLP_WINE_DIALOGINFO, (ULONG_PTR)dlgInfo );
 364         }
 365         else
 366         {
 367             HeapFree( GetProcessHeap(), 0, dlgInfo );
 368             return NULL;
 369         }
 370     }
 371     return dlgInfo;
 372 }
 373
 374 /***********************************************************************
 375  *              DefDlgProc (USER.308)
 376  */
 377 LRESULT WINAPI DefDlgProc16( HWND16 hwnd, UINT16 msg, WPARAM16 wParam,
 378                              LPARAM lParam )
 379 {
 380     DIALOGINFO *dlgInfo;
 381     DLGPROC16 dlgproc;
 382     HWND hwnd32 = WIN_Handle32( hwnd );
 383     BOOL result = FALSE;
 384
 385     /* Perform DIALOGINFO intialization if not done */
 386     if(!(dlgInfo = DIALOG_get_info(hwnd32, TRUE))) return -1;
 387
 388     SetWindowLongPtrW( hwnd32, DWLP_MSGRESULT, 0 );
 389
 390     if ((dlgproc = (DLGPROC16)DEFDLG_GetDlgProc( hwnd32 ))) /* Call dialog procedure */
 391         result = WINPROC_CallDlgProc16( dlgproc, hwnd, msg, wParam, lParam );
 392
 393     if (!result && IsWindow(hwnd32))
 394     {
 395         /* callback didn't process this message */
 396
 397         switch(msg)
 398         {
 399             case WM_ERASEBKGND:
 400             case WM_SHOWWINDOW:
 401             case WM_ACTIVATE:
 402             case WM_SETFOCUS:
 403             case DM_SETDEFID:
 404             case DM_GETDEFID:
 405             case WM_NEXTDLGCTL:
 406             case WM_GETFONT:
 407             case WM_CLOSE:
 408             case WM_NCDESTROY:
 409             case WM_ENTERMENULOOP:
 410             case WM_LBUTTONDOWN:
 411             case WM_NCLBUTTONDOWN:
 412                 return DEFDLG_Proc( hwnd32, msg, (WPARAM)wParam, lParam, dlgInfo );
 413             case WM_INITDIALOG:
 414             case WM_VKEYTOITEM:
 415             case WM_COMPAREITEM:
 416             case WM_CHARTOITEM:
 417                 break;
 418
 419             default:
 420                 return DefWindowProc16( hwnd, msg, wParam, lParam );
 421         }
 422     }
 423     return DEFDLG_Epilog( hwnd32, msg, result);
 424 }
 425
 426
 427 /***********************************************************************
 428  *              DefDlgProcA (USER32.@)
 429  */
 430 LRESULT WINAPI DefDlgProcA( HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam )
 431 {
 432     DIALOGINFO *dlgInfo;
 433     DLGPROC dlgproc;
 434     BOOL result = FALSE;
 435
 436     /* Perform DIALOGINFO initialization if not done */
 437     if(!(dlgInfo = DIALOG_get_info( hwnd, TRUE ))) return -1;
 438
 439     SetWindowLongPtrW( hwnd, DWLP_MSGRESULT, 0 );
 440
 441     if ((dlgproc = DEFDLG_GetDlgProc( hwnd ))) /* Call dialog procedure */
 442         result = WINPROC_CallDlgProcA( dlgproc, hwnd, msg, wParam, lParam );
 443
 444     if (!result && IsWindow(hwnd))
 445     {
 446         /* callback didn't process this message */
 447
 448         switch(msg)
 449         {
 450             case WM_ERASEBKGND:
 451             case WM_SHOWWINDOW:
 452             case WM_ACTIVATE:
 453             case WM_SETFOCUS:
 454             case DM_SETDEFID:
 455             case DM_GETDEFID:
 456             case WM_NEXTDLGCTL:
 457             case WM_GETFONT:
 458             case WM_CLOSE:
 459             case WM_NCDESTROY:
 460             case WM_ENTERMENULOOP:
 461             case WM_LBUTTONDOWN:
 462             case WM_NCLBUTTONDOWN:
 463                  return DEFDLG_Proc( hwnd, msg, wParam, lParam, dlgInfo );
 464             case WM_INITDIALOG:
 465             case WM_VKEYTOITEM:
 466             case WM_COMPAREITEM:
 467             case WM_CHARTOITEM:
 468                  break;
 469
 470             default:
 471                  return DefWindowProcA( hwnd, msg, wParam, lParam );
 472         }
 473     }
 474     return DEFDLG_Epilog(hwnd, msg, result);
 475 }
 476
 477
 478 /***********************************************************************
 479  *              DefDlgProcW (USER32.@)
 480  */
 481 LRESULT WINAPI DefDlgProcW( HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam )
 482 {
 483     DIALOGINFO *dlgInfo;
 484     BOOL result = FALSE;
 485     DLGPROC dlgproc;
 486
 487     /* Perform DIALOGINFO intialization if not done */
 488     if(!(dlgInfo = DIALOG_get_info( hwnd, TRUE ))) return -1;
 489
 490     SetWindowLongPtrW( hwnd, DWLP_MSGRESULT, 0 );
 491
 492     if ((dlgproc = DEFDLG_GetDlgProc( hwnd ))) /* Call dialog procedure */
 493         result = WINPROC_CallDlgProcW( dlgproc, hwnd, msg, wParam, lParam );
 494
 495     if (!result && IsWindow(hwnd))
 496     {
 497         /* callback didn't process this message */
 498
 499         switch(msg)
 500         {
 501             case WM_ERASEBKGND:
 502             case WM_SHOWWINDOW:
 503             case WM_ACTIVATE:
 504             case WM_SETFOCUS:
 505             case DM_SETDEFID:
 506             case DM_GETDEFID:
 507             case WM_NEXTDLGCTL:
 508             case WM_GETFONT:
 509             case WM_CLOSE:
 510             case WM_NCDESTROY:
 511             case WM_ENTERMENULOOP:
 512             case WM_LBUTTONDOWN:
 513             case WM_NCLBUTTONDOWN:
 514                  return DEFDLG_Proc( hwnd, msg, wParam, lParam, dlgInfo );
 515             case WM_INITDIALOG:
 516             case WM_VKEYTOITEM:
 517             case WM_COMPAREITEM:
 518             case WM_CHARTOITEM:
 519                  break;
 520
 521             default:
 522                  return DefWindowProcW( hwnd, msg, wParam, lParam );
 523         }
 524     }
 525     return DEFDLG_Epilog(hwnd, msg, result);
 526 }