dlls/user32/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 "user_private.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     if (SendMessageW( hwndCtrl, WM_GETDLGCODE, 0, 0 ) & DLGC_HASSETSEL)
  63         SendMessageW( hwndCtrl, EM_SETSEL, 0, -1 );
  64     SetFocus( hwndCtrl );
  65 }
  66
  67
  68 /***********************************************************************
  69  *           DEFDLG_SaveFocus
  70  */
  71 static void DEFDLG_SaveFocus( HWND hwnd )
  72 {
  73     DIALOGINFO *infoPtr;
  74     HWND hwndFocus = GetFocus();
  75
  76     if (!hwndFocus || !IsChild( hwnd, hwndFocus )) return;
  77     if (!(infoPtr = DIALOG_get_info( hwnd, FALSE ))) return;
  78     infoPtr->hwndFocus = hwndFocus;
  79     /* Remove default button */
  80 }
  81
  82
  83 /***********************************************************************
  84  *           DEFDLG_RestoreFocus
  85  */
  86 static void DEFDLG_RestoreFocus( HWND hwnd )
  87 {
  88     DIALOGINFO *infoPtr;
  89
  90     if (IsIconic( hwnd )) return;
  91     if (!(infoPtr = DIALOG_get_info( hwnd, FALSE ))) return;
  92     /* Don't set the focus back to controls if EndDialog is already called.*/
  93     if (infoPtr->flags & DF_END) return;
  94     if (!IsWindow(infoPtr->hwndFocus) || infoPtr->hwndFocus == hwnd) {
  95         /* If no saved focus control exists, set focus to the first visible,
  96            non-disabled, WS_TABSTOP control in the dialog */
  97         infoPtr->hwndFocus = GetNextDlgTabItem( hwnd, 0, FALSE );
  98         if (!IsWindow( infoPtr->hwndFocus )) return;
  99     }
 100     DEFDLG_SetFocus( hwnd, infoPtr->hwndFocus );
 101
 102     /* This used to set infoPtr->hwndFocus to NULL for no apparent reason,
 103        sometimes losing focus when receiving WM_SETFOCUS messages. */
 104 }
 105
 106
 107 /***********************************************************************
 108  *           DEFDLG_FindDefButton
 109  *
 110  * Find the current default push-button.
 111  */
 112 static HWND DEFDLG_FindDefButton( HWND hwndDlg )
 113 {
 114     HWND hwndChild, hwndTmp;
 115
 116     hwndChild = GetWindow( hwndDlg, GW_CHILD );
 117     while (hwndChild)
 118     {
 119         if (SendMessageW( hwndChild, WM_GETDLGCODE, 0, 0 ) & DLGC_DEFPUSHBUTTON)
 120             break;
 121
 122         /* Recurse into WS_EX_CONTROLPARENT controls */
 123         if (GetWindowLongW( hwndChild, GWL_EXSTYLE ) & WS_EX_CONTROLPARENT)
 124         {
 125             LONG dsStyle = GetWindowLongW( hwndChild, GWL_STYLE );
 126             if ((dsStyle & WS_VISIBLE) && !(dsStyle & WS_DISABLED) &&
 127                 (hwndTmp = DEFDLG_FindDefButton(hwndChild)) != NULL)
 128            return hwndTmp;
 129         }
 130         hwndChild = GetWindow( hwndChild, GW_HWNDNEXT );
 131     }
 132     return hwndChild;
 133 }
 134
 135
 136 /***********************************************************************
 137  *           DEFDLG_SetDefId
 138  *
 139  * Set the default button id.
 140  */
 141 static BOOL DEFDLG_SetDefId( HWND hwndDlg, DIALOGINFO *dlgInfo, WPARAM wParam)
 142 {
 143     DWORD dlgcode=0; /* initialize just to avoid a warning */
 144     HWND hwndOld, hwndNew = GetDlgItem(hwndDlg, wParam);
 145     INT old_id = dlgInfo->idResult;
 146
 147     dlgInfo->idResult = wParam;
 148     if (hwndNew &&
 149         !((dlgcode=SendMessageW(hwndNew, WM_GETDLGCODE, 0, 0 ))
 150             & (DLGC_UNDEFPUSHBUTTON | DLGC_BUTTON)))
 151         return FALSE;  /* Destination is not a push button */
 152
 153     /* Make sure the old default control is a valid push button ID */
 154     hwndOld = GetDlgItem( hwndDlg, old_id );
 155     if (!hwndOld || !(SendMessageW( hwndOld, WM_GETDLGCODE, 0, 0) & DLGC_DEFPUSHBUTTON))
 156         hwndOld = DEFDLG_FindDefButton( hwndDlg );
 157     if (hwndOld && hwndOld != hwndNew)
 158         SendMessageW( hwndOld, BM_SETSTYLE, BS_PUSHBUTTON, TRUE );
 159
 160     if (hwndNew)
 161     {
 162         if(dlgcode & DLGC_UNDEFPUSHBUTTON)
 163             SendMessageW( hwndNew, BM_SETSTYLE, BS_DEFPUSHBUTTON, TRUE );
 164     }
 165     return TRUE;
 166 }
 167
 168
 169 /***********************************************************************
 170  *           DEFDLG_SetDefButton
 171  *
 172  * Set the new default button to be hwndNew.
 173  */
 174 static BOOL DEFDLG_SetDefButton( HWND hwndDlg, DIALOGINFO *dlgInfo, HWND hwndNew )
 175 {
 176     DWORD dlgcode=0; /* initialize just to avoid a warning */
 177     HWND hwndOld = GetDlgItem( hwndDlg, dlgInfo->idResult );
 178
 179     if (hwndNew &&
 180         !((dlgcode=SendMessageW(hwndNew, WM_GETDLGCODE, 0, 0 ))
 181             & (DLGC_UNDEFPUSHBUTTON | DLGC_DEFPUSHBUTTON)))
 182     {
 183         /**
 184          * Need to draw only default push button rectangle.
 185          * Since the next control is not a push button, need to draw the push
 186          * button rectangle for the default control.
 187          */
 188         hwndNew = hwndOld;
 189         dlgcode = SendMessageW(hwndNew, WM_GETDLGCODE, 0, 0 );
 190     }
 191
 192     /* Make sure the old default control is a valid push button ID */
 193     if (!hwndOld || !(SendMessageW( hwndOld, WM_GETDLGCODE, 0, 0) & DLGC_DEFPUSHBUTTON))
 194         hwndOld = DEFDLG_FindDefButton( hwndDlg );
 195     if (hwndOld && hwndOld != hwndNew)
 196         SendMessageW( hwndOld, BM_SETSTYLE, BS_PUSHBUTTON, TRUE );
 197
 198     if (hwndNew)
 199     {
 200         if(dlgcode & DLGC_UNDEFPUSHBUTTON)
 201             SendMessageW( hwndNew, BM_SETSTYLE, BS_DEFPUSHBUTTON, TRUE );
 202     }
 203     return TRUE;
 204 }
 205
 206
 207 /***********************************************************************
 208  *           DEFDLG_Proc
 209  *
 210  * Implementation of DefDlgProc(). Only handle messages that need special
 211  * handling for dialogs.
 212  */
 213 static LRESULT DEFDLG_Proc( HWND hwnd, UINT msg, WPARAM wParam,
 214                             LPARAM lParam, DIALOGINFO *dlgInfo )
 215 {
 216     switch(msg)
 217     {
 218         case WM_ERASEBKGND:
 219         {
 220             HBRUSH brush = (HBRUSH)SendMessageW( hwnd, WM_CTLCOLORDLG, wParam, (LPARAM)hwnd );
 221             if (!brush) brush = (HBRUSH)DefWindowProcW( hwnd, WM_CTLCOLORDLG, wParam, (LPARAM)hwnd );
 222             if (brush)
 223             {
 224                 RECT rect;
 225                 HDC hdc = (HDC)wParam;
 226                 GetClientRect( hwnd, &rect );
 227                 DPtoLP( hdc, (LPPOINT)&rect, 2 );
 228                 FillRect( hdc, &rect, brush );
 229             }
 230             return 1;
 231         }
 232         case WM_NCDESTROY:
 233             if (dlgInfo)
 234             {
 235                 WND *wndPtr;
 236
 237                 /* Free dialog heap (if created) */
 238                 if (dlgInfo->hDialogHeap)
 239                 {
 240                     GlobalUnlock16(dlgInfo->hDialogHeap);
 241                     GlobalFree16(dlgInfo->hDialogHeap);
 242                 }
 243                 if (dlgInfo->hUserFont) DeleteObject( dlgInfo->hUserFont );
 244                 if (dlgInfo->hMenu) DestroyMenu( dlgInfo->hMenu );
 245                 HeapFree( GetProcessHeap(), 0, dlgInfo );
 246
 247                 wndPtr = WIN_GetPtr( hwnd );
 248                 wndPtr->dlgInfo = NULL;
 249                 WIN_ReleasePtr( wndPtr );
 250             }
 251               /* Window clean-up */
 252             return DefWindowProcA( hwnd, msg, wParam, lParam );
 253
 254         case WM_SHOWWINDOW:
 255             if (!wParam) DEFDLG_SaveFocus( hwnd );
 256             return DefWindowProcA( hwnd, msg, wParam, lParam );
 257
 258         case WM_ACTIVATE:
 259             if (wParam) DEFDLG_RestoreFocus( hwnd );
 260             else DEFDLG_SaveFocus( hwnd );
 261             return 0;
 262
 263         case WM_SETFOCUS:
 264             DEFDLG_RestoreFocus( hwnd );
 265             return 0;
 266
 267         case DM_SETDEFID:
 268             if (dlgInfo && !(dlgInfo->flags & DF_END))
 269                 DEFDLG_SetDefId( hwnd, dlgInfo, wParam );
 270             return 1;
 271
 272         case DM_GETDEFID:
 273             if (dlgInfo && !(dlgInfo->flags & DF_END))
 274             {
 275                 HWND hwndDefId;
 276                 if (dlgInfo->idResult)
 277                     return MAKELONG( dlgInfo->idResult, DC_HASDEFID );
 278                 if ((hwndDefId = DEFDLG_FindDefButton( hwnd )))
 279                     return MAKELONG( GetDlgCtrlID( hwndDefId ), DC_HASDEFID);
 280             }
 281             return 0;
 282
 283         case WM_NEXTDLGCTL:
 284             if (dlgInfo)
 285             {
 286                 HWND hwndDest = (HWND)wParam;
 287                 if (!lParam)
 288                     hwndDest = GetNextDlgTabItem(hwnd, GetFocus(), wParam);
 289                 if (hwndDest) DEFDLG_SetFocus( hwnd, hwndDest );
 290                 DEFDLG_SetDefButton( hwnd, dlgInfo, hwndDest );
 291             }
 292             return 0;
 293
 294         case WM_ENTERMENULOOP:
 295         case WM_LBUTTONDOWN:
 296         case WM_NCLBUTTONDOWN:
 297             {
 298                 HWND hwndFocus = GetFocus();
 299                 if (hwndFocus)
 300                 {
 301                     /* always make combo box hide its listbox control */
 302                     if (!SendMessageW( hwndFocus, CB_SHOWDROPDOWN, FALSE, 0 ))
 303                         SendMessageW( GetParent(hwndFocus), CB_SHOWDROPDOWN, FALSE, 0 );
 304                 }
 305             }
 306             return DefWindowProcA( hwnd, msg, wParam, lParam );
 307
 308         case WM_GETFONT:
 309             return dlgInfo ? (LRESULT)dlgInfo->hUserFont : 0;
 310
 311         case WM_CLOSE:
 312             PostMessageA( hwnd, WM_COMMAND, MAKEWPARAM(IDCANCEL, BN_CLICKED),
 313                             (LPARAM)GetDlgItem( hwnd, IDCANCEL ) );
 314             return 0;
 315     }
 316     return 0;
 317 }
 318
 319 /***********************************************************************
 320  *           DEFDLG_Epilog
 321  */
 322 static LRESULT DEFDLG_Epilog(HWND hwnd, UINT msg, BOOL fResult)
 323 {
 324     /* see SDK 3.1 */
 325
 326     if ((msg >= WM_CTLCOLORMSGBOX && msg <= WM_CTLCOLORSTATIC) ||
 327          msg == WM_CTLCOLOR || msg == WM_COMPAREITEM ||
 328          msg == WM_VKEYTOITEM || msg == WM_CHARTOITEM ||
 329          msg == WM_QUERYDRAGICON || msg == WM_INITDIALOG)
 330         return fResult;
 331
 332     return GetWindowLongPtrW( hwnd, DWLP_MSGRESULT );
 333 }
 334
 335 /***********************************************************************
 336 *               DIALOG_get_info
 337 *
 338 * Get the DIALOGINFO structure of a window, allocating it if needed
 339 * and 'create' is TRUE.
 340 */
 341 DIALOGINFO *DIALOG_get_info( HWND hwnd, BOOL create )
 342 {
 343     WND* wndPtr;
 344     DIALOGINFO* dlgInfo;
 345
 346     wndPtr = WIN_GetPtr( hwnd );
 347     if (!wndPtr || wndPtr == WND_OTHER_PROCESS || wndPtr == WND_DESKTOP)
 348         return NULL;
 349
 350     dlgInfo = wndPtr->dlgInfo;
 351
 352     if (!dlgInfo && create)
 353     {
 354         if (!(dlgInfo = HeapAlloc( GetProcessHeap(), 0, sizeof(*dlgInfo) )))
 355             goto out;
 356         dlgInfo->hwndFocus   = 0;
 357         dlgInfo->hUserFont   = 0;
 358         dlgInfo->hMenu       = 0;
 359         dlgInfo->xBaseUnit   = 0;
 360         dlgInfo->yBaseUnit   = 0;
 361         dlgInfo->idResult    = 0;
 362         dlgInfo->flags       = 0;
 363         dlgInfo->hDialogHeap = 0;
 364         wndPtr->dlgInfo = dlgInfo;
 365         wndPtr->flags |= WIN_ISDIALOG;
 366     }
 367
 368 out:
 369     WIN_ReleasePtr( wndPtr );
 370     return dlgInfo;
 371 }
 372
 373 /***********************************************************************
 374  *              DefDlgProc (USER.308)
 375  */
 376 LRESULT WINAPI DefDlgProc16( HWND16 hwnd, UINT16 msg, WPARAM16 wParam,
 377                              LPARAM lParam )
 378 {
 379     DIALOGINFO *dlgInfo;
 380     DLGPROC16 dlgproc;
 381     HWND hwnd32 = WIN_Handle32( hwnd );
 382     BOOL result = FALSE;
 383
 384     /* Perform DIALOGINFO initialization if not done */
 385     if(!(dlgInfo = DIALOG_get_info(hwnd32, TRUE))) return -1;
 386
 387     SetWindowLongPtrW( hwnd32, DWLP_MSGRESULT, 0 );
 388
 389     if ((dlgproc = (DLGPROC16)DEFDLG_GetDlgProc( hwnd32 ))) /* Call dialog procedure */
 390         result = WINPROC_CallDlgProc16( dlgproc, hwnd, msg, wParam, lParam );
 391
 392     if (!result && IsWindow(hwnd32))
 393     {
 394         /* callback didn't process this message */
 395
 396         switch(msg)
 397         {
 398             case WM_ERASEBKGND:
 399             case WM_SHOWWINDOW:
 400             case WM_ACTIVATE:
 401             case WM_SETFOCUS:
 402             case DM_SETDEFID:
 403             case DM_GETDEFID:
 404             case WM_NEXTDLGCTL:
 405             case WM_GETFONT:
 406             case WM_CLOSE:
 407             case WM_NCDESTROY:
 408             case WM_ENTERMENULOOP:
 409             case WM_LBUTTONDOWN:
 410             case WM_NCLBUTTONDOWN:
 411                 return DEFDLG_Proc( hwnd32, msg, (WPARAM)wParam, lParam, dlgInfo );
 412             case WM_INITDIALOG:
 413             case WM_VKEYTOITEM:
 414             case WM_COMPAREITEM:
 415             case WM_CHARTOITEM:
 416                 break;
 417
 418             default:
 419                 return DefWindowProc16( hwnd, msg, wParam, lParam );
 420         }
 421     }
 422     return DEFDLG_Epilog( hwnd32, msg, result);
 423 }
 424
 425
 426 /***********************************************************************
 427  *              DefDlgProcA (USER32.@)
 428  */
 429 LRESULT WINAPI DefDlgProcA( HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam )
 430 {
 431     DIALOGINFO *dlgInfo;
 432     DLGPROC dlgproc;
 433     BOOL result = FALSE;
 434
 435     /* Perform DIALOGINFO initialization if not done */
 436     if(!(dlgInfo = DIALOG_get_info( hwnd, TRUE ))) return -1;
 437
 438     SetWindowLongPtrW( hwnd, DWLP_MSGRESULT, 0 );
 439
 440     if ((dlgproc = DEFDLG_GetDlgProc( hwnd ))) /* Call dialog procedure */
 441         result = WINPROC_CallDlgProcA( dlgproc, hwnd, msg, wParam, lParam );
 442
 443     if (!result && IsWindow(hwnd))
 444     {
 445         /* callback didn't process this message */
 446
 447         switch(msg)
 448         {
 449             case WM_ERASEBKGND:
 450             case WM_SHOWWINDOW:
 451             case WM_ACTIVATE:
 452             case WM_SETFOCUS:
 453             case DM_SETDEFID:
 454             case DM_GETDEFID:
 455             case WM_NEXTDLGCTL:
 456             case WM_GETFONT:
 457             case WM_CLOSE:
 458             case WM_NCDESTROY:
 459             case WM_ENTERMENULOOP:
 460             case WM_LBUTTONDOWN:
 461             case WM_NCLBUTTONDOWN:
 462                  return DEFDLG_Proc( hwnd, msg, wParam, lParam, dlgInfo );
 463             case WM_INITDIALOG:
 464             case WM_VKEYTOITEM:
 465             case WM_COMPAREITEM:
 466             case WM_CHARTOITEM:
 467                  break;
 468
 469             default:
 470                  return DefWindowProcA( hwnd, msg, wParam, lParam );
 471         }
 472     }
 473     return DEFDLG_Epilog(hwnd, msg, result);
 474 }
 475
 476
 477 /***********************************************************************
 478  *              DefDlgProcW (USER32.@)
 479  */
 480 LRESULT WINAPI DefDlgProcW( HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam )
 481 {
 482     DIALOGINFO *dlgInfo;
 483     BOOL result = FALSE;
 484     DLGPROC dlgproc;
 485
 486     /* Perform DIALOGINFO initialization if not done */
 487     if(!(dlgInfo = DIALOG_get_info( hwnd, TRUE ))) return -1;
 488
 489     SetWindowLongPtrW( hwnd, DWLP_MSGRESULT, 0 );
 490
 491     if ((dlgproc = DEFDLG_GetDlgProc( hwnd ))) /* Call dialog procedure */
 492         result = WINPROC_CallDlgProcW( dlgproc, hwnd, msg, wParam, lParam );
 493
 494     if (!result && IsWindow(hwnd))
 495     {
 496         /* callback didn't process this message */
 497
 498         switch(msg)
 499         {
 500             case WM_ERASEBKGND:
 501             case WM_SHOWWINDOW:
 502             case WM_ACTIVATE:
 503             case WM_SETFOCUS:
 504             case DM_SETDEFID:
 505             case DM_GETDEFID:
 506             case WM_NEXTDLGCTL:
 507             case WM_GETFONT:
 508             case WM_CLOSE:
 509             case WM_NCDESTROY:
 510             case WM_ENTERMENULOOP:
 511             case WM_LBUTTONDOWN:
 512             case WM_NCLBUTTONDOWN:
 513                  return DEFDLG_Proc( hwnd, msg, wParam, lParam, dlgInfo );
 514             case WM_INITDIALOG:
 515             case WM_VKEYTOITEM:
 516             case WM_COMPAREITEM:
 517             case WM_CHARTOITEM:
 518                  break;
 519
 520             default:
 521                  return DefWindowProcW( hwnd, msg, wParam, lParam );
 522         }
 523     }
 524     return DEFDLG_Epilog(hwnd, msg, result);
 525 }