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 (IsChild( 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 || !IsChild( 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 || IsIconic(hwnd)) return FALSE;
  55     if (!IsWindow( infoPtr->hwndFocus )) return FALSE;
  56     DEFDLG_SetFocus( hwnd, infoPtr->hwndFocus );
  57     infoPtr->hwndFocus = 0;
  58     return TRUE;
  59 }
  60
  61
  62 /***********************************************************************
  63  *           DEFDLG_FindDefButton
  64  *
  65  * Find the current default push-button.
  66  */
  67 static HWND32 DEFDLG_FindDefButton( HWND32 hwndDlg )
  68 {
  69     HWND32 hwndChild = GetWindow( hwndDlg, GW_CHILD );
  70     while (hwndChild)
  71     {
  72         if (SendMessage16( hwndChild, WM_GETDLGCODE, 0, 0 ) & DLGC_DEFPUSHBUTTON)
  73             break;
  74         hwndChild = GetWindow( hwndChild, GW_HWNDNEXT );
  75     }
  76     return hwndChild;
  77 }
  78
  79
  80 /***********************************************************************
  81  *           DEFDLG_SetDefButton
  82  *
  83  * Set the new default button to be hwndNew.
  84  */
  85 static BOOL32 DEFDLG_SetDefButton( HWND32 hwndDlg, DIALOGINFO *dlgInfo,
  86                                    HWND32 hwndNew )
  87 {
  88     if (hwndNew &&
  89         !(SendMessage16(hwndNew, WM_GETDLGCODE, 0, 0 ) & DLGC_UNDEFPUSHBUTTON))
  90         return FALSE;  /* Destination is not a push button */
  91
  92     if (dlgInfo->idResult)  /* There's already a default pushbutton */
  93     {
  94         HWND32 hwndOld = GetDlgItem( hwndDlg, dlgInfo->idResult );
  95         if (SendMessage32A( hwndOld, WM_GETDLGCODE, 0, 0) & DLGC_DEFPUSHBUTTON)
  96             SendMessage32A( hwndOld, BM_SETSTYLE32, BS_PUSHBUTTON, TRUE );
  97     }
  98     if (hwndNew)
  99     {
 100         SendMessage32A( hwndNew, BM_SETSTYLE32, BS_DEFPUSHBUTTON, TRUE );
 101         dlgInfo->idResult = GetDlgCtrlID( hwndNew );
 102     }
 103     else dlgInfo->idResult = 0;
 104     return TRUE;
 105 }
 106
 107
 108 /***********************************************************************
 109  *           DEFDLG_Proc
 110  *
 111  * Implementation of DefDlgProc(). Only handle messages that need special
 112  * handling for dialogs.
 113  */
 114 static LRESULT DEFDLG_Proc( HWND32 hwnd, UINT32 msg, WPARAM32 wParam,
 115                             LPARAM lParam, DIALOGINFO *dlgInfo )
 116 {
 117     HWND32 hwndDefId;
 118
 119     switch(msg)
 120     {
 121         case WM_ERASEBKGND:
 122             FillWindow( hwnd, hwnd, (HDC16)wParam, (HBRUSH16)CTLCOLOR_DLG );
 123             return 1;
 124
 125         case WM_NCDESTROY:
 126
 127               /* Free dialog heap (if created) */
 128             if (dlgInfo->hDialogHeap)
 129             {
 130                 GlobalUnlock16(dlgInfo->hDialogHeap);
 131                 GlobalFree16(dlgInfo->hDialogHeap);
 132                 dlgInfo->hDialogHeap = 0;
 133             }
 134
 135               /* Delete font */
 136             if (dlgInfo->hUserFont)
 137             {
 138                 DeleteObject32( dlgInfo->hUserFont );
 139                 dlgInfo->hUserFont = 0;
 140             }
 141
 142               /* Delete menu */
 143             if (dlgInfo->hMenu)
 144             {
 145                 DestroyMenu32( dlgInfo->hMenu );
 146                 dlgInfo->hMenu = 0;
 147             }
 148
 149             /* Delete window procedure */
 150             WINPROC_FreeProc( dlgInfo->dlgProc );
 151             dlgInfo->dlgProc = (HWINDOWPROC)0;
 152             dlgInfo->fEnd    = TRUE;    /* just in case */
 153
 154               /* Window clean-up */
 155             return DefWindowProc32A( hwnd, msg, wParam, lParam );
 156
 157         case WM_SHOWWINDOW:
 158             if (!wParam) DEFDLG_SaveFocus( hwnd, dlgInfo );
 159             return DefWindowProc32A( hwnd, msg, wParam, lParam );
 160
 161         case WM_ACTIVATE:
 162             if (wParam) DEFDLG_RestoreFocus( hwnd, dlgInfo );
 163             else DEFDLG_SaveFocus( hwnd, dlgInfo );
 164             return 0;
 165
 166         case WM_SETFOCUS:
 167             DEFDLG_RestoreFocus( hwnd, dlgInfo );
 168             return 0;
 169
 170         case DM_SETDEFID:
 171             if (dlgInfo->fEnd) return 1;
 172             DEFDLG_SetDefButton( hwnd, dlgInfo,
 173                                  wParam ? GetDlgItem( hwnd, wParam ) : 0 );
 174             return 1;
 175
 176         case DM_GETDEFID:
 177             if (dlgInfo->fEnd) return 0;
 178             if (dlgInfo->idResult)
 179               return MAKELONG( dlgInfo->idResult, DC_HASDEFID );
 180             hwndDefId = DEFDLG_FindDefButton( hwnd );
 181             if (hwndDefId)
 182               return MAKELONG( GetDlgCtrlID( hwndDefId ), DC_HASDEFID);
 183             return 0;
 184
 185         case WM_NEXTDLGCTL:
 186             {
 187                 HWND32 hwndDest = (HWND32)wParam;
 188                 if (!lParam)
 189                     hwndDest = GetNextDlgTabItem32(hwnd, GetFocus32(), wParam);
 190                 if (hwndDest) DEFDLG_SetFocus( hwnd, hwndDest );
 191                 DEFDLG_SetDefButton( hwnd, dlgInfo, hwndDest );
 192             }
 193             return 0;
 194
 195         case WM_GETFONT:
 196             return dlgInfo->hUserFont;
 197
 198         case WM_CLOSE:
 199             EndDialog( hwnd, TRUE );
 200             DestroyWindow( hwnd );
 201             return 0;
 202     }
 203     return 0;
 204 }
 205
 206 /***********************************************************************
 207  *           DEFDLG_Signoff
 208  */
 209 static LRESULT DEFDLG_Signoff(DIALOGINFO* dlgInfo, UINT32 msg, BOOL16 fResult)
 210 {
 211     /* see SDK 3.1 */
 212
 213     if ((msg >= WM_CTLCOLORMSGBOX && msg <= WM_CTLCOLORSTATIC) ||
 214          msg == WM_CTLCOLOR || msg == WM_COMPAREITEM ||
 215          msg == WM_VKEYTOITEM || msg == WM_CHARTOITEM ||
 216          msg == WM_QUERYDRAGICON || msg == WM_INITDIALOG)
 217         return fResult;
 218
 219     return dlgInfo->msgResult;
 220 }
 221
 222 /***********************************************************************
 223  *           DefDlgProc16   (USER.308)
 224  */
 225 LRESULT DefDlgProc16( HWND16 hwnd, UINT16 msg, WPARAM16 wParam, LPARAM lParam )
 226 {
 227     DIALOGINFO * dlgInfo;
 228     BOOL16 result = FALSE;
 229     WND * wndPtr = WIN_FindWndPtr( hwnd );
 230
 231     if (!wndPtr) return 0;
 232     dlgInfo = (DIALOGINFO *)&wndPtr->wExtra;
 233     dlgInfo->msgResult = 0;
 234
 235     if (dlgInfo->dlgProc)       /* Call dialog procedure */
 236         result = (BOOL16)CallWindowProc16( (WNDPROC16)dlgInfo->dlgProc,
 237                                            hwnd, msg, wParam, lParam );
 238
 239     /* Check if window was destroyed by dialog procedure */
 240
 241     if( !result && IsWindow(hwnd))
 242     {
 243         /* callback didn't process this message */
 244
 245         switch(msg)
 246         {
 247             case WM_ERASEBKGND:
 248             case WM_SHOWWINDOW:
 249             case WM_ACTIVATE:
 250             case WM_SETFOCUS:
 251             case DM_SETDEFID:
 252             case DM_GETDEFID:
 253             case WM_NEXTDLGCTL:
 254             case WM_GETFONT:
 255             case WM_CLOSE:
 256             case WM_NCDESTROY:
 257                 return DEFDLG_Proc( (HWND32)hwnd, msg,
 258                                     (WPARAM32)wParam, lParam, dlgInfo );
 259             case WM_INITDIALOG:
 260             case WM_VKEYTOITEM:
 261             case WM_COMPAREITEM:
 262             case WM_CHARTOITEM:
 263                 break;
 264
 265             default:
 266                 return DefWindowProc16( hwnd, msg, wParam, lParam );
 267         }
 268     }
 269     return DEFDLG_Signoff(dlgInfo, msg, result);
 270 }
 271
 272
 273 /***********************************************************************
 274  *           DefDlgProc32A   (USER32.119)
 275  */
 276 LRESULT DefDlgProc32A( HWND32 hwnd, UINT32 msg, WPARAM32 wParam, LPARAM lParam)
 277 {
 278     DIALOGINFO * dlgInfo;
 279     BOOL16 result = FALSE;
 280     WND * wndPtr = WIN_FindWndPtr( hwnd );
 281
 282     if (!wndPtr) return 0;
 283     dlgInfo = (DIALOGINFO *)&wndPtr->wExtra;
 284     dlgInfo->msgResult = 0;
 285
 286     if (dlgInfo->dlgProc)       /* Call dialog procedure */
 287         result = (BOOL16)CallWindowProc32A( (WNDPROC32)dlgInfo->dlgProc,
 288                                             hwnd, msg, wParam, lParam );
 289
 290     /* Check if window was destroyed by dialog procedure */
 291
 292     if( !result && IsWindow(hwnd))
 293     {
 294         /* callback didn't process this message */
 295
 296         switch(msg)
 297         {
 298             case WM_ERASEBKGND:
 299             case WM_SHOWWINDOW:
 300             case WM_ACTIVATE:
 301             case WM_SETFOCUS:
 302             case DM_SETDEFID:
 303             case DM_GETDEFID:
 304             case WM_NEXTDLGCTL:
 305             case WM_GETFONT:
 306             case WM_CLOSE:
 307             case WM_NCDESTROY:
 308                  return DEFDLG_Proc( (HWND32)hwnd, msg,
 309                                      (WPARAM32)wParam, lParam, dlgInfo );
 310             case WM_INITDIALOG:
 311             case WM_VKEYTOITEM:
 312             case WM_COMPAREITEM:
 313             case WM_CHARTOITEM:
 314                  break;
 315
 316             default:
 317                  return DefWindowProc32A( hwnd, msg, wParam, lParam );
 318         }
 319     }
 320     return DEFDLG_Signoff(dlgInfo, msg, result);
 321 }
 322
 323
 324 /***********************************************************************
 325  *           DefDlgProc32W   (USER32.120)
 326  */
 327 LRESULT DefDlgProc32W( HWND32 hwnd, UINT32 msg, WPARAM32 wParam, LPARAM lParam)
 328 {
 329     DIALOGINFO * dlgInfo;
 330     BOOL16 result = FALSE;
 331     WND * wndPtr = WIN_FindWndPtr( hwnd );
 332
 333     if (!wndPtr) return 0;
 334     dlgInfo = (DIALOGINFO *)&wndPtr->wExtra;
 335     dlgInfo->msgResult = 0;
 336
 337     if (dlgInfo->dlgProc)       /* Call dialog procedure */
 338         result = (BOOL16)CallWindowProc32W( (WNDPROC32)dlgInfo->dlgProc,
 339                                             hwnd, msg, wParam, lParam );
 340
 341     /* Check if window was destroyed by dialog procedure */
 342
 343     if( !result && IsWindow(hwnd))
 344     {
 345         /* callback didn't process this message */
 346
 347         switch(msg)
 348         {
 349             case WM_ERASEBKGND:
 350             case WM_SHOWWINDOW:
 351             case WM_ACTIVATE:
 352             case WM_SETFOCUS:
 353             case DM_SETDEFID:
 354             case DM_GETDEFID:
 355             case WM_NEXTDLGCTL:
 356             case WM_GETFONT:
 357             case WM_CLOSE:
 358             case WM_NCDESTROY:
 359                  return DEFDLG_Proc( (HWND32)hwnd, msg,
 360                                      (WPARAM32)wParam, lParam, dlgInfo );
 361             case WM_INITDIALOG:
 362             case WM_VKEYTOITEM:
 363             case WM_COMPAREITEM:
 364             case WM_CHARTOITEM:
 365                  break;
 366
 367             default:
 368                  return DefWindowProc32W( hwnd, msg, wParam, lParam );
 369         }
 370     }
 371     return DEFDLG_Signoff(dlgInfo, msg, result);
 372 }