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 <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 WNDPROC DEFDLG_GetDlgProc( HWND hwnd )
  39 {
  40     WNDPROC 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 = *(WNDPROC *)((char *)wndPtr->wExtra + DWL_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     DEFDLG_SetFocus( hwnd, 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 (GetWindowLongA( hwndChild, GWL_EXSTYLE ) & WS_EX_CONTROLPARENT)
 131         {
 132             LONG dsStyle = GetWindowLongA( 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 || !(SendMessageA( hwndOld, WM_GETDLGCODE, 0, 0) & DLGC_DEFPUSHBUTTON))
 163         hwndOld = DEFDLG_FindDefButton( hwndDlg );
 164     if (hwndOld && hwndOld != hwndNew)
 165         SendMessageA( hwndOld, BM_SETSTYLE, BS_PUSHBUTTON, TRUE );
 166
 167     if (hwndNew)
 168     {
 169         if(dlgcode & DLGC_UNDEFPUSHBUTTON)
 170             SendMessageA( 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 || !(SendMessageA( hwndOld, WM_GETDLGCODE, 0, 0) & DLGC_DEFPUSHBUTTON))
 201         hwndOld = DEFDLG_FindDefButton( hwndDlg );
 202     if (hwndOld && hwndOld != hwndNew)
 203         SendMessageA( hwndOld, BM_SETSTYLE, BS_PUSHBUTTON, TRUE );
 204
 205     if (hwndNew)
 206     {
 207         if(dlgcode & DLGC_UNDEFPUSHBUTTON)
 208             SendMessageA( 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 *)SetWindowLongW( hwnd, DWL_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 (!SendMessageA( hwndFocus, CB_SHOWDROPDOWN, FALSE, 0 ))
 304                         SendMessageA( 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         case WM_NOTIFYFORMAT:
 318             return DefWindowProcA( hwnd, msg, wParam, lParam );
 319     }
 320     return 0;
 321 }
 322
 323 /***********************************************************************
 324  *           DEFDLG_Epilog
 325  */
 326 static LRESULT DEFDLG_Epilog(HWND hwnd, UINT msg, BOOL fResult)
 327 {
 328     /* see SDK 3.1 */
 329
 330     if ((msg >= WM_CTLCOLORMSGBOX && msg <= WM_CTLCOLORSTATIC) ||
 331          msg == WM_CTLCOLOR || msg == WM_COMPAREITEM ||
 332          msg == WM_VKEYTOITEM || msg == WM_CHARTOITEM ||
 333          msg == WM_QUERYDRAGICON || msg == WM_INITDIALOG)
 334         return fResult;
 335
 336     return GetWindowLongA( hwnd, DWL_MSGRESULT );
 337 }
 338
 339 /***********************************************************************
 340 *               DIALOG_get_info
 341 *
 342 * Get the DIALOGINFO structure of a window, allocating it if needed
 343 * and 'create' is TRUE.
 344 */
 345 DIALOGINFO *DIALOG_get_info( HWND hwnd, BOOL create )
 346 {
 347     WND* wndPtr;
 348     DIALOGINFO* dlgInfo = (DIALOGINFO *)GetWindowLongW( hwnd, DWL_WINE_DIALOGINFO );
 349
 350     if(!dlgInfo && create)
 351     {
 352         if (!(dlgInfo = HeapAlloc( GetProcessHeap(), 0, sizeof(*dlgInfo) ))) return NULL;
 353         dlgInfo->hwndFocus   = 0;
 354         dlgInfo->hUserFont   = 0;
 355         dlgInfo->hMenu       = 0;
 356         dlgInfo->xBaseUnit   = 0;
 357         dlgInfo->yBaseUnit   = 0;
 358         dlgInfo->idResult    = 0;
 359         dlgInfo->flags       = 0;
 360         dlgInfo->hDialogHeap = 0;
 361         wndPtr = WIN_GetPtr( hwnd );
 362         if (wndPtr && wndPtr != WND_OTHER_PROCESS)
 363         {
 364             wndPtr->flags |= WIN_ISDIALOG;
 365             WIN_ReleasePtr( wndPtr );
 366             SetWindowLongW( hwnd, DWL_WINE_DIALOGINFO, (LONG)dlgInfo );
 367         }
 368         else
 369         {
 370             HeapFree( GetProcessHeap(), 0, dlgInfo );
 371             return NULL;
 372         }
 373     }
 374     return dlgInfo;
 375 }
 376
 377 /***********************************************************************
 378  *              DefDlgProc (USER.308)
 379  */
 380 LRESULT WINAPI DefDlgProc16( HWND16 hwnd, UINT16 msg, WPARAM16 wParam,
 381                              LPARAM lParam )
 382 {
 383     DIALOGINFO *dlgInfo;
 384     WNDPROC16 dlgproc;
 385     HWND hwnd32 = WIN_Handle32( hwnd );
 386     BOOL result = FALSE;
 387
 388     /* Perform DIALOGINFO intialization if not done */
 389     if(!(dlgInfo = DIALOG_get_info(hwnd32, TRUE))) return -1;
 390
 391     SetWindowLongW( hwnd32, DWL_MSGRESULT, 0 );
 392
 393     if ((dlgproc = (WNDPROC16)DEFDLG_GetDlgProc( hwnd32 )))
 394     {
 395         /* Call dialog procedure */
 396         result = CallWindowProc16( dlgproc, hwnd, msg, wParam, lParam );
 397         /* 16 bit dlg procs only return BOOL16 */
 398         if( WINPROC_GetProcType( (WNDPROC)dlgproc ) == WIN_PROC_16 )
 399             result = LOWORD(result);
 400     }
 401
 402     if (!result && IsWindow(hwnd32))
 403     {
 404         /* callback didn't process this message */
 405
 406         switch(msg)
 407         {
 408             case WM_ERASEBKGND:
 409             case WM_SHOWWINDOW:
 410             case WM_ACTIVATE:
 411             case WM_SETFOCUS:
 412             case DM_SETDEFID:
 413             case DM_GETDEFID:
 414             case WM_NEXTDLGCTL:
 415             case WM_GETFONT:
 416             case WM_CLOSE:
 417             case WM_NCDESTROY:
 418             case WM_ENTERMENULOOP:
 419             case WM_LBUTTONDOWN:
 420             case WM_NCLBUTTONDOWN:
 421                 return DEFDLG_Proc( hwnd32, msg, (WPARAM)wParam, lParam, dlgInfo );
 422             case WM_INITDIALOG:
 423             case WM_VKEYTOITEM:
 424             case WM_COMPAREITEM:
 425             case WM_CHARTOITEM:
 426                 break;
 427
 428             default:
 429                 return DefWindowProc16( hwnd, msg, wParam, lParam );
 430         }
 431     }
 432     return DEFDLG_Epilog( hwnd32, msg, result);
 433 }
 434
 435
 436 /***********************************************************************
 437  *              DefDlgProcA (USER32.@)
 438  */
 439 LRESULT WINAPI DefDlgProcA( HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam )
 440 {
 441     DIALOGINFO *dlgInfo;
 442     WNDPROC dlgproc;
 443     BOOL result = FALSE;
 444
 445     /* Perform DIALOGINFO initialization if not done */
 446     if(!(dlgInfo = DIALOG_get_info( hwnd, TRUE ))) return -1;
 447
 448     SetWindowLongW( hwnd, DWL_MSGRESULT, 0 );
 449
 450     if ((dlgproc = DEFDLG_GetDlgProc( hwnd )))
 451     {
 452         /* Call dialog procedure */
 453         result = CallWindowProcA( dlgproc, hwnd, msg, wParam, lParam );
 454         /* 16 bit dlg procs only return BOOL16 */
 455         if( WINPROC_GetProcType( dlgproc ) == WIN_PROC_16 )
 456             result = LOWORD(result);
 457     }
 458
 459     if (!result && IsWindow(hwnd))
 460     {
 461         /* callback didn't process this message */
 462
 463         switch(msg)
 464         {
 465             case WM_ERASEBKGND:
 466             case WM_SHOWWINDOW:
 467             case WM_ACTIVATE:
 468             case WM_SETFOCUS:
 469             case DM_SETDEFID:
 470             case DM_GETDEFID:
 471             case WM_NEXTDLGCTL:
 472             case WM_GETFONT:
 473             case WM_CLOSE:
 474             case WM_NCDESTROY:
 475             case WM_ENTERMENULOOP:
 476             case WM_LBUTTONDOWN:
 477             case WM_NCLBUTTONDOWN:
 478                  return DEFDLG_Proc( hwnd, msg, wParam, lParam, dlgInfo );
 479             case WM_INITDIALOG:
 480             case WM_VKEYTOITEM:
 481             case WM_COMPAREITEM:
 482             case WM_CHARTOITEM:
 483                  break;
 484
 485             default:
 486                  return DefWindowProcA( hwnd, msg, wParam, lParam );
 487         }
 488     }
 489     return DEFDLG_Epilog(hwnd, msg, result);
 490 }
 491
 492
 493 /***********************************************************************
 494  *              DefDlgProcW (USER32.@)
 495  */
 496 LRESULT WINAPI DefDlgProcW( HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam )
 497 {
 498     DIALOGINFO *dlgInfo;
 499     BOOL result = FALSE;
 500     WNDPROC dlgproc;
 501
 502     /* Perform DIALOGINFO intialization if not done */
 503     if(!(dlgInfo = DIALOG_get_info( hwnd, TRUE ))) return -1;
 504
 505     SetWindowLongW( hwnd, DWL_MSGRESULT, 0 );
 506
 507     if ((dlgproc = DEFDLG_GetDlgProc( hwnd )))
 508     {
 509         /* Call dialog procedure */
 510         result = CallWindowProcW( dlgproc, hwnd, msg, wParam, lParam );
 511         /* 16 bit dlg procs only return BOOL16 */
 512         if( WINPROC_GetProcType( dlgproc ) == WIN_PROC_16 )
 513             result = LOWORD(result);
 514     }
 515
 516     if (!result && IsWindow(hwnd))
 517     {
 518         /* callback didn't process this message */
 519
 520         switch(msg)
 521         {
 522             case WM_ERASEBKGND:
 523             case WM_SHOWWINDOW:
 524             case WM_ACTIVATE:
 525             case WM_SETFOCUS:
 526             case DM_SETDEFID:
 527             case DM_GETDEFID:
 528             case WM_NEXTDLGCTL:
 529             case WM_GETFONT:
 530             case WM_CLOSE:
 531             case WM_NCDESTROY:
 532             case WM_ENTERMENULOOP:
 533             case WM_LBUTTONDOWN:
 534             case WM_NCLBUTTONDOWN:
 535                  return DEFDLG_Proc( hwnd, msg, wParam, lParam, dlgInfo );
 536             case WM_INITDIALOG:
 537             case WM_VKEYTOITEM:
 538             case WM_COMPAREITEM:
 539             case WM_CHARTOITEM:
 540                  break;
 541
 542             default:
 543                  return DefWindowProcW( hwnd, msg, wParam, lParam );
 544         }
 545     }
 546     return DEFDLG_Epilog(hwnd, msg, result);
 547 }