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 "winuser.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                 if (dlgInfo->hUserFont) DeleteObject( dlgInfo->hUserFont );
 238                 if (dlgInfo->hMenu) DestroyMenu( dlgInfo->hMenu );
 239                 HeapFree( GetProcessHeap(), 0, dlgInfo );
 240
 241                 wndPtr = WIN_GetPtr( hwnd );
 242                 wndPtr->dlgInfo = NULL;
 243                 WIN_ReleasePtr( wndPtr );
 244             }
 245               /* Window clean-up */
 246             return DefWindowProcA( hwnd, msg, wParam, lParam );
 247
 248         case WM_SHOWWINDOW:
 249             if (!wParam) DEFDLG_SaveFocus( hwnd );
 250             return DefWindowProcA( hwnd, msg, wParam, lParam );
 251
 252         case WM_ACTIVATE:
 253             if (wParam) DEFDLG_RestoreFocus( hwnd );
 254             else DEFDLG_SaveFocus( hwnd );
 255             return 0;
 256
 257         case WM_SETFOCUS:
 258             DEFDLG_RestoreFocus( hwnd );
 259             return 0;
 260
 261         case DM_SETDEFID:
 262             if (dlgInfo && !(dlgInfo->flags & DF_END))
 263                 DEFDLG_SetDefId( hwnd, dlgInfo, wParam );
 264             return 1;
 265
 266         case DM_GETDEFID:
 267             if (dlgInfo && !(dlgInfo->flags & DF_END))
 268             {
 269                 HWND hwndDefId;
 270                 if (dlgInfo->idResult)
 271                     return MAKELONG( dlgInfo->idResult, DC_HASDEFID );
 272                 if ((hwndDefId = DEFDLG_FindDefButton( hwnd )))
 273                     return MAKELONG( GetDlgCtrlID( hwndDefId ), DC_HASDEFID);
 274             }
 275             return 0;
 276
 277         case WM_NEXTDLGCTL:
 278             if (dlgInfo)
 279             {
 280                 HWND hwndDest = (HWND)wParam;
 281                 if (!lParam)
 282                     hwndDest = GetNextDlgTabItem(hwnd, GetFocus(), wParam);
 283                 if (hwndDest) DEFDLG_SetFocus( hwnd, hwndDest );
 284                 DEFDLG_SetDefButton( hwnd, dlgInfo, hwndDest );
 285             }
 286             return 0;
 287
 288         case WM_ENTERMENULOOP:
 289         case WM_LBUTTONDOWN:
 290         case WM_NCLBUTTONDOWN:
 291             {
 292                 HWND hwndFocus = GetFocus();
 293                 if (hwndFocus)
 294                 {
 295                     /* always make combo box hide its listbox control */
 296                     if (!SendMessageW( hwndFocus, CB_SHOWDROPDOWN, FALSE, 0 ))
 297                         SendMessageW( GetParent(hwndFocus), CB_SHOWDROPDOWN, FALSE, 0 );
 298                 }
 299             }
 300             return DefWindowProcA( hwnd, msg, wParam, lParam );
 301
 302         case WM_GETFONT:
 303             return dlgInfo ? (LRESULT)dlgInfo->hUserFont : 0;
 304
 305         case WM_CLOSE:
 306             PostMessageA( hwnd, WM_COMMAND, MAKEWPARAM(IDCANCEL, BN_CLICKED),
 307                             (LPARAM)GetDlgItem( hwnd, IDCANCEL ) );
 308             return 0;
 309     }
 310     return 0;
 311 }
 312
 313 /***********************************************************************
 314 *               DIALOG_get_info
 315 *
 316 * Get the DIALOGINFO structure of a window, allocating it if needed
 317 * and 'create' is TRUE.
 318 */
 319 DIALOGINFO *DIALOG_get_info( HWND hwnd, BOOL create )
 320 {
 321     WND* wndPtr;
 322     DIALOGINFO* dlgInfo;
 323
 324     wndPtr = WIN_GetPtr( hwnd );
 325     if (!wndPtr || wndPtr == WND_OTHER_PROCESS || wndPtr == WND_DESKTOP)
 326     {
 327         SetLastError( ERROR_INVALID_WINDOW_HANDLE );
 328         return NULL;
 329     }
 330
 331     dlgInfo = wndPtr->dlgInfo;
 332
 333     if (!dlgInfo && create)
 334     {
 335         if (!(dlgInfo = HeapAlloc( GetProcessHeap(), 0, sizeof(*dlgInfo) )))
 336             goto out;
 337         dlgInfo->hwndFocus   = 0;
 338         dlgInfo->hUserFont   = 0;
 339         dlgInfo->hMenu       = 0;
 340         dlgInfo->xBaseUnit   = 0;
 341         dlgInfo->yBaseUnit   = 0;
 342         dlgInfo->idResult    = IDOK;
 343         dlgInfo->flags       = 0;
 344         wndPtr->dlgInfo = dlgInfo;
 345     }
 346
 347 out:
 348     WIN_ReleasePtr( wndPtr );
 349     return dlgInfo;
 350 }
 351
 352 /***********************************************************************
 353  *              DefDlgProcA (USER32.@)
 354  */
 355 LRESULT WINAPI DefDlgProcA( HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam )
 356 {
 357     DIALOGINFO *dlgInfo;
 358     DLGPROC dlgproc;
 359     LRESULT result = 0;
 360
 361     /* Perform DIALOGINFO initialization if not done */
 362     if(!(dlgInfo = DIALOG_get_info( hwnd, TRUE ))) return 0;
 363
 364     SetWindowLongPtrW( hwnd, DWLP_MSGRESULT, 0 );
 365
 366     if ((dlgproc = DEFDLG_GetDlgProc( hwnd ))) /* Call dialog procedure */
 367         result = WINPROC_CallDlgProcA( dlgproc, hwnd, msg, wParam, lParam );
 368
 369     if (!result && IsWindow(hwnd))
 370     {
 371         /* callback didn't process this message */
 372
 373         switch(msg)
 374         {
 375             case WM_ERASEBKGND:
 376             case WM_SHOWWINDOW:
 377             case WM_ACTIVATE:
 378             case WM_SETFOCUS:
 379             case DM_SETDEFID:
 380             case DM_GETDEFID:
 381             case WM_NEXTDLGCTL:
 382             case WM_GETFONT:
 383             case WM_CLOSE:
 384             case WM_NCDESTROY:
 385             case WM_ENTERMENULOOP:
 386             case WM_LBUTTONDOWN:
 387             case WM_NCLBUTTONDOWN:
 388                  return DEFDLG_Proc( hwnd, msg, wParam, lParam, dlgInfo );
 389             case WM_INITDIALOG:
 390             case WM_VKEYTOITEM:
 391             case WM_COMPAREITEM:
 392             case WM_CHARTOITEM:
 393                  break;
 394
 395             default:
 396                  return DefWindowProcA( hwnd, msg, wParam, lParam );
 397         }
 398     }
 399
 400     if ((msg >= WM_CTLCOLORMSGBOX && msg <= WM_CTLCOLORSTATIC) ||
 401          msg == WM_CTLCOLOR || msg == WM_COMPAREITEM ||
 402          msg == WM_VKEYTOITEM || msg == WM_CHARTOITEM ||
 403          msg == WM_QUERYDRAGICON || msg == WM_INITDIALOG)
 404         return result;
 405
 406     return GetWindowLongPtrW( hwnd, DWLP_MSGRESULT );
 407 }
 408
 409
 410 /***********************************************************************
 411  *              DefDlgProcW (USER32.@)
 412  */
 413 LRESULT WINAPI DefDlgProcW( HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam )
 414 {
 415     DIALOGINFO *dlgInfo;
 416     DLGPROC dlgproc;
 417     LRESULT result = 0;
 418
 419     /* Perform DIALOGINFO initialization if not done */
 420     if(!(dlgInfo = DIALOG_get_info( hwnd, TRUE ))) return 0;
 421
 422     SetWindowLongPtrW( hwnd, DWLP_MSGRESULT, 0 );
 423
 424     if ((dlgproc = DEFDLG_GetDlgProc( hwnd ))) /* Call dialog procedure */
 425         result = WINPROC_CallDlgProcW( dlgproc, hwnd, msg, wParam, lParam );
 426
 427     if (!result && IsWindow(hwnd))
 428     {
 429         /* callback didn't process this message */
 430
 431         switch(msg)
 432         {
 433             case WM_ERASEBKGND:
 434             case WM_SHOWWINDOW:
 435             case WM_ACTIVATE:
 436             case WM_SETFOCUS:
 437             case DM_SETDEFID:
 438             case DM_GETDEFID:
 439             case WM_NEXTDLGCTL:
 440             case WM_GETFONT:
 441             case WM_CLOSE:
 442             case WM_NCDESTROY:
 443             case WM_ENTERMENULOOP:
 444             case WM_LBUTTONDOWN:
 445             case WM_NCLBUTTONDOWN:
 446                  return DEFDLG_Proc( hwnd, msg, wParam, lParam, dlgInfo );
 447             case WM_INITDIALOG:
 448             case WM_VKEYTOITEM:
 449             case WM_COMPAREITEM:
 450             case WM_CHARTOITEM:
 451                  break;
 452
 453             default:
 454                  return DefWindowProcW( hwnd, msg, wParam, lParam );
 455         }
 456     }
 457
 458     if ((msg >= WM_CTLCOLORMSGBOX && msg <= WM_CTLCOLORSTATIC) ||
 459          msg == WM_CTLCOLOR || msg == WM_COMPAREITEM ||
 460          msg == WM_VKEYTOITEM || msg == WM_CHARTOITEM ||
 461          msg == WM_QUERYDRAGICON || msg == WM_INITDIALOG)
 462         return result;
 463
 464     return GetWindowLongPtrW( hwnd, DWLP_MSGRESULT );
 465 }