windows/defdlg.c

   1 /*
   2  * Default dialog procedure
   3  *
   4  * Copyright 1993, 1996 Alexandre Julliard
   5  *
   6  */
   7
   8 #include "windows.h"
   9 #include "dialog.h"
  10 #include "win.h"
  11 #include "winproc.h"
  12
  13
  14 /***********************************************************************
  15  *           DEFDLG_SetFocus
  16  *
  17  * Set the focus to a control of the dialog, selecting the text if
  18  * the control is an edit dialog.
  19  */
  20 static void DEFDLG_SetFocus( HWND32 hwndDlg, HWND32 hwndCtrl )
  21 {
  22     HWND32 hwndPrev = GetFocus32();
  23
  24     if (IsChild32( hwndDlg, hwndPrev ))
  25     {
  26         if (SendMessage16( hwndPrev, WM_GETDLGCODE, 0, 0 ) & DLGC_HASSETSEL)
  27             SendMessage16( hwndPrev, EM_SETSEL16, TRUE, MAKELONG( -1, 0 ) );
  28     }
  29     if (SendMessage16( hwndCtrl, WM_GETDLGCODE, 0, 0 ) & DLGC_HASSETSEL)
  30         SendMessage16( hwndCtrl, EM_SETSEL16, FALSE, MAKELONG( 0, -1 ) );
  31     SetFocus32( hwndCtrl );
  32 }
  33
  34
  35 /***********************************************************************
  36  *           DEFDLG_SaveFocus
  37  */
  38 static BOOL32 DEFDLG_SaveFocus( HWND32 hwnd, DIALOGINFO *infoPtr )
  39 {
  40     HWND32 hwndFocus = GetFocus32();
  41
  42     if (!hwndFocus || !IsChild32( hwnd, hwndFocus )) return FALSE;
  43     infoPtr->hwndFocus = hwndFocus;
  44       /* Remove default button */
  45     return TRUE;
  46 }
  47
  48
  49 /***********************************************************************
  50  *           DEFDLG_RestoreFocus
  51  */
  52 static BOOL32 DEFDLG_RestoreFocus( HWND32 hwnd, DIALOGINFO *infoPtr )
  53 {
  54     if (!infoPtr->hwndFocus || IsIconic32(hwnd)) return FALSE;
  55     if (!IsWindow32( infoPtr->hwndFocus )) return FALSE;
  56     DEFDLG_SetFocus( hwnd, infoPtr->hwndFocus );
  57     /* This used to set infoPtr->hwndFocus to NULL for no apparent reason,
  58        sometimes losing focus when receiving WM_SETFOCUS messages. */
  59     return TRUE;
  60 }
  61
  62
  63 /***********************************************************************
  64  *           DEFDLG_FindDefButton
  65  *
  66  * Find the current default push-button.
  67  */
  68 static HWND32 DEFDLG_FindDefButton( HWND32 hwndDlg )
  69 {
  70     HWND32 hwndChild = GetWindow32( hwndDlg, GW_CHILD );
  71     while (hwndChild)
  72     {
  73         if (SendMessage16( hwndChild, WM_GETDLGCODE, 0, 0 ) & DLGC_DEFPUSHBUTTON)
  74             break;
  75         hwndChild = GetWindow32( hwndChild, GW_HWNDNEXT );
  76     }
  77     return hwndChild;
  78 }
  79
  80
  81 /***********************************************************************
  82  *           DEFDLG_SetDefButton
  83  *
  84  * Set the new default button to be hwndNew.
  85  */
  86 static BOOL32 DEFDLG_SetDefButton( HWND32 hwndDlg, DIALOGINFO *dlgInfo,
  87                                    HWND32 hwndNew )
  88 {
  89     if (hwndNew &&
  90         !(SendMessage16(hwndNew, WM_GETDLGCODE, 0, 0 ) & DLGC_UNDEFPUSHBUTTON))
  91         return FALSE;  /* Destination is not a push button */
  92
  93     if (dlgInfo->idResult)  /* There's already a default pushbutton */
  94     {
  95         HWND32 hwndOld = GetDlgItem32( hwndDlg, dlgInfo->idResult );
  96         if (SendMessage32A( hwndOld, WM_GETDLGCODE, 0, 0) & DLGC_DEFPUSHBUTTON)
  97             SendMessage32A( hwndOld, BM_SETSTYLE32, BS_PUSHBUTTON, TRUE );
  98     }
  99     if (hwndNew)
 100     {
 101         SendMessage32A( hwndNew, BM_SETSTYLE32, BS_DEFPUSHBUTTON, TRUE );
 102         dlgInfo->idResult = GetDlgCtrlID32( hwndNew );
 103     }
 104     else dlgInfo->idResult = 0;
 105     return TRUE;
 106 }
 107
 108
 109 /***********************************************************************
 110  *           DEFDLG_Proc
 111  *
 112  * Implementation of DefDlgProc(). Only handle messages that need special
 113  * handling for dialogs.
 114  */
 115 static LRESULT DEFDLG_Proc( HWND32 hwnd, UINT32 msg, WPARAM32 wParam,
 116                             LPARAM lParam, DIALOGINFO *dlgInfo )
 117 {
 118     switch(msg)
 119     {
 120         case WM_ERASEBKGND:
 121             FillWindow( hwnd, hwnd, (HDC16)wParam, (HBRUSH16)CTLCOLOR_DLG );
 122             return 1;
 123
 124         case WM_NCDESTROY:
 125
 126               /* Free dialog heap (if created) */
 127             if (dlgInfo->hDialogHeap)
 128             {
 129                 GlobalUnlock16(dlgInfo->hDialogHeap);
 130                 GlobalFree16(dlgInfo->hDialogHeap);
 131                 dlgInfo->hDialogHeap = 0;
 132             }
 133
 134               /* Delete font */
 135             if (dlgInfo->hUserFont)
 136             {
 137                 DeleteObject32( dlgInfo->hUserFont );
 138                 dlgInfo->hUserFont = 0;
 139             }
 140
 141               /* Delete menu */
 142             if (dlgInfo->hMenu)
 143             {
 144                 DestroyMenu32( dlgInfo->hMenu );
 145                 dlgInfo->hMenu = 0;
 146             }
 147
 148             /* Delete window procedure */
 149             WINPROC_FreeProc( dlgInfo->dlgProc, WIN_PROC_WINDOW );
 150             dlgInfo->dlgProc = (HWINDOWPROC)0;
 151             dlgInfo->flags |= DF_END;  /* just in case */
 152
 153               /* Window clean-up */
 154             return DefWindowProc32A( hwnd, msg, wParam, lParam );
 155
 156         case WM_SHOWWINDOW:
 157             if (!wParam) DEFDLG_SaveFocus( hwnd, dlgInfo );
 158             return DefWindowProc32A( hwnd, msg, wParam, lParam );
 159
 160         case WM_ACTIVATE:
 161             if (wParam) DEFDLG_RestoreFocus( hwnd, dlgInfo );
 162             else DEFDLG_SaveFocus( hwnd, dlgInfo );
 163             return 0;
 164
 165         case WM_SETFOCUS:
 166             DEFDLG_RestoreFocus( hwnd, dlgInfo );
 167             return 0;
 168
 169         case DM_SETDEFID:
 170             if (dlgInfo->flags & DF_END) return 1;
 171             DEFDLG_SetDefButton( hwnd, dlgInfo,
 172                                  wParam ? GetDlgItem32( hwnd, wParam ) : 0 );
 173             return 1;
 174
 175         case DM_GETDEFID:
 176             {
 177                 HWND32 hwndDefId;
 178                 if (dlgInfo->flags & DF_END) return 0;
 179                 if (dlgInfo->idResult)
 180                     return MAKELONG( dlgInfo->idResult, DC_HASDEFID );
 181                 if ((hwndDefId = DEFDLG_FindDefButton( hwnd )))
 182                     return MAKELONG( GetDlgCtrlID32( hwndDefId ), DC_HASDEFID);
 183             }
 184             return 0;
 185
 186         case WM_NEXTDLGCTL:
 187             {
 188                 HWND32 hwndDest = (HWND32)wParam;
 189                 if (!lParam)
 190                     hwndDest = GetNextDlgTabItem32(hwnd, GetFocus32(), wParam);
 191                 if (hwndDest) DEFDLG_SetFocus( hwnd, hwndDest );
 192                 DEFDLG_SetDefButton( hwnd, dlgInfo, hwndDest );
 193             }
 194             return 0;
 195
 196         case WM_ENTERMENULOOP:
 197         case WM_LBUTTONDOWN:
 198         case WM_NCLBUTTONDOWN:
 199             {
 200                 HWND32 hwndFocus = GetFocus32();
 201                 if (hwndFocus)
 202                 {
 203                     WND *wnd = WIN_FindWndPtr( hwndFocus );
 204
 205                     if( wnd )
 206                     {
 207                         /* always make combo box hide its listbox control */
 208
 209                         if( WIDGETS_IsControl32( wnd, BIC32_COMBO ) )
 210                             SendMessage32A( hwndFocus, CB_SHOWDROPDOWN32,
 211                                             FALSE, 0 );
 212                         else if( WIDGETS_IsControl32( wnd, BIC32_EDIT ) &&
 213                                  WIDGETS_IsControl32( wnd->parent,
 214                                                       BIC32_COMBO ))
 215                             SendMessage32A( wnd->parent->hwndSelf,
 216                                             CB_SHOWDROPDOWN32, FALSE, 0 );
 217                     }
 218                 }
 219             }
 220             return DefWindowProc32A( hwnd, msg, wParam, lParam );
 221
 222         case WM_GETFONT:
 223             return dlgInfo->hUserFont;
 224
 225         case WM_CLOSE:
 226             EndDialog32( hwnd, TRUE );
 227             DestroyWindow32( hwnd );
 228             return 0;
 229     }
 230     return 0;
 231 }
 232
 233 /***********************************************************************
 234  *           DEFDLG_Epilog
 235  */
 236 static LRESULT DEFDLG_Epilog(DIALOGINFO* dlgInfo, UINT32 msg, BOOL16 fResult)
 237 {
 238     /* see SDK 3.1 */
 239
 240     if ((msg >= WM_CTLCOLORMSGBOX && msg <= WM_CTLCOLORSTATIC) ||
 241          msg == WM_CTLCOLOR || msg == WM_COMPAREITEM ||
 242          msg == WM_VKEYTOITEM || msg == WM_CHARTOITEM ||
 243          msg == WM_QUERYDRAGICON || msg == WM_INITDIALOG)
 244         return fResult;
 245
 246     return dlgInfo->msgResult;
 247 }
 248
 249 /***********************************************************************
 250  *           DefDlgProc16   (USER.308)
 251  */
 252 LRESULT WINAPI DefDlgProc16( HWND16 hwnd, UINT16 msg, WPARAM16 wParam,
 253                              LPARAM lParam )
 254 {
 255     DIALOGINFO * dlgInfo;
 256     BOOL16 result = FALSE;
 257     WND * wndPtr = WIN_FindWndPtr( hwnd );
 258
 259     if (!wndPtr) return 0;
 260     dlgInfo = (DIALOGINFO *)&wndPtr->wExtra;
 261     dlgInfo->msgResult = 0;
 262
 263     if (dlgInfo->dlgProc)       /* Call dialog procedure */
 264         result = (BOOL16)CallWindowProc16( (WNDPROC16)dlgInfo->dlgProc,
 265                                            hwnd, msg, wParam, lParam );
 266
 267     /* Check if window was destroyed by dialog procedure */
 268
 269     if (!result && IsWindow32(hwnd))
 270     {
 271         /* callback didn't process this message */
 272
 273         switch(msg)
 274         {
 275             case WM_ERASEBKGND:
 276             case WM_SHOWWINDOW:
 277             case WM_ACTIVATE:
 278             case WM_SETFOCUS:
 279             case DM_SETDEFID:
 280             case DM_GETDEFID:
 281             case WM_NEXTDLGCTL:
 282             case WM_GETFONT:
 283             case WM_CLOSE:
 284             case WM_NCDESTROY:
 285             case WM_ENTERMENULOOP:
 286             case WM_LBUTTONDOWN:
 287             case WM_NCLBUTTONDOWN:
 288                 return DEFDLG_Proc( (HWND32)hwnd, msg,
 289                                     (WPARAM32)wParam, lParam, dlgInfo );
 290             case WM_INITDIALOG:
 291             case WM_VKEYTOITEM:
 292             case WM_COMPAREITEM:
 293             case WM_CHARTOITEM:
 294                 break;
 295
 296             default:
 297                 return DefWindowProc16( hwnd, msg, wParam, lParam );
 298         }
 299     }
 300     return DEFDLG_Epilog(dlgInfo, msg, result);
 301 }
 302
 303
 304 /***********************************************************************
 305  *           DefDlgProc32A   (USER32.119)
 306  */
 307 LRESULT WINAPI DefDlgProc32A( HWND32 hwnd, UINT32 msg,
 308                               WPARAM32 wParam, LPARAM lParam )
 309 {
 310     DIALOGINFO * dlgInfo;
 311     BOOL16 result = FALSE;
 312     WND * wndPtr = WIN_FindWndPtr( hwnd );
 313
 314     if (!wndPtr) return 0;
 315     dlgInfo = (DIALOGINFO *)&wndPtr->wExtra;
 316     dlgInfo->msgResult = 0;
 317
 318     if (dlgInfo->dlgProc)       /* Call dialog procedure */
 319         result = (BOOL16)CallWindowProc32A( (WNDPROC32)dlgInfo->dlgProc,
 320                                             hwnd, msg, wParam, lParam );
 321
 322     /* Check if window was destroyed by dialog procedure */
 323
 324     if (!result && IsWindow32(hwnd))
 325     {
 326         /* callback didn't process this message */
 327
 328         switch(msg)
 329         {
 330             case WM_ERASEBKGND:
 331             case WM_SHOWWINDOW:
 332             case WM_ACTIVATE:
 333             case WM_SETFOCUS:
 334             case DM_SETDEFID:
 335             case DM_GETDEFID:
 336             case WM_NEXTDLGCTL:
 337             case WM_GETFONT:
 338             case WM_CLOSE:
 339             case WM_NCDESTROY:
 340             case WM_ENTERMENULOOP:
 341             case WM_LBUTTONDOWN:
 342             case WM_NCLBUTTONDOWN:
 343                  return DEFDLG_Proc( (HWND32)hwnd, msg,
 344                                      (WPARAM32)wParam, lParam, dlgInfo );
 345             case WM_INITDIALOG:
 346             case WM_VKEYTOITEM:
 347             case WM_COMPAREITEM:
 348             case WM_CHARTOITEM:
 349                  break;
 350
 351             default:
 352                  return DefWindowProc32A( hwnd, msg, wParam, lParam );
 353         }
 354     }
 355     return DEFDLG_Epilog(dlgInfo, msg, result);
 356 }
 357
 358
 359 /***********************************************************************
 360  *           DefDlgProc32W   (USER32.120)
 361  */
 362 LRESULT WINAPI DefDlgProc32W( HWND32 hwnd, UINT32 msg, WPARAM32 wParam,
 363                               LPARAM lParam )
 364 {
 365     DIALOGINFO * dlgInfo;
 366     BOOL16 result = FALSE;
 367     WND * wndPtr = WIN_FindWndPtr( hwnd );
 368
 369     if (!wndPtr) return 0;
 370     dlgInfo = (DIALOGINFO *)&wndPtr->wExtra;
 371     dlgInfo->msgResult = 0;
 372
 373     if (dlgInfo->dlgProc)       /* Call dialog procedure */
 374         result = (BOOL16)CallWindowProc32W( (WNDPROC32)dlgInfo->dlgProc,
 375                                             hwnd, msg, wParam, lParam );
 376
 377     /* Check if window was destroyed by dialog procedure */
 378
 379     if (!result && IsWindow32(hwnd))
 380     {
 381         /* callback didn't process this message */
 382
 383         switch(msg)
 384         {
 385             case WM_ERASEBKGND:
 386             case WM_SHOWWINDOW:
 387             case WM_ACTIVATE:
 388             case WM_SETFOCUS:
 389             case DM_SETDEFID:
 390             case DM_GETDEFID:
 391             case WM_NEXTDLGCTL:
 392             case WM_GETFONT:
 393             case WM_CLOSE:
 394             case WM_NCDESTROY:
 395             case WM_ENTERMENULOOP:
 396             case WM_LBUTTONDOWN:
 397             case WM_NCLBUTTONDOWN:
 398                  return DEFDLG_Proc( (HWND32)hwnd, msg,
 399                                      (WPARAM32)wParam, lParam, dlgInfo );
 400             case WM_INITDIALOG:
 401             case WM_VKEYTOITEM:
 402             case WM_COMPAREITEM:
 403             case WM_CHARTOITEM:
 404                  break;
 405
 406             default:
 407                  return DefWindowProc32W( hwnd, msg, wParam, lParam );
 408         }
 409     }
 410     return DEFDLG_Epilog(dlgInfo, msg, result);
 411 }