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( HWND hwndDlg, HWND hwndCtrl )
  21 {
  22     HWND hwndPrev = GetFocus();
  23
  24     if (IsChild( hwndDlg, hwndPrev ))
  25     {
  26         if (SendMessage16( hwndPrev, WM_GETDLGCODE, 0, 0 ) & DLGC_HASSETSEL)
  27             SendMessage16( hwndPrev, EM_SETSEL, TRUE, MAKELONG( -1, 0 ) );
  28     }
  29     if (SendMessage16( hwndCtrl, WM_GETDLGCODE, 0, 0 ) & DLGC_HASSETSEL)
  30         SendMessage16( hwndCtrl, EM_SETSEL, FALSE, MAKELONG( 0, -1 ) );
  31     SetFocus( hwndCtrl );
  32 }
  33
  34
  35 /***********************************************************************
  36  *           DEFDLG_SaveFocus
  37  */
  38 static BOOL DEFDLG_SaveFocus( HWND hwnd, DIALOGINFO *infoPtr )
  39 {
  40     HWND hwndFocus = GetFocus();
  41
  42     if (!hwndFocus || !IsChild( hwnd, hwndFocus )) return FALSE;
  43     if (!infoPtr->hwndFocus) return FALSE;  /* Already saved */
  44     infoPtr->hwndFocus = hwndFocus;
  45       /* Remove default button */
  46     return TRUE;
  47 }
  48
  49
  50 /***********************************************************************
  51  *           DEFDLG_RestoreFocus
  52  */
  53 static BOOL DEFDLG_RestoreFocus( HWND hwnd, DIALOGINFO *infoPtr )
  54 {
  55     if (!infoPtr->hwndFocus || IsIconic(hwnd)) return FALSE;
  56     if (!IsWindow( infoPtr->hwndFocus )) return FALSE;
  57     DEFDLG_SetFocus( hwnd, infoPtr->hwndFocus );
  58     infoPtr->hwndFocus = 0;
  59     return TRUE;
  60 }
  61
  62
  63 #ifdef SUPERFLUOUS_FUNCTIONS
  64 /***********************************************************************
  65  *           DEFDLG_FindDefButton
  66  *
  67  * Find the current default push-button.
  68  */
  69 static HWND DEFDLG_FindDefButton( HWND hwndDlg )
  70 {
  71     HWND hwndChild = GetWindow( hwndDlg, GW_CHILD );
  72     while (hwndChild)
  73     {
  74         if (SendMessage16( hwndChild, WM_GETDLGCODE, 0, 0 ) & DLGC_DEFPUSHBUTTON)
  75             break;
  76         hwndChild = GetWindow( hwndChild, GW_HWNDNEXT );
  77     }
  78     return hwndChild;
  79 }
  80 #endif
  81
  82
  83 /***********************************************************************
  84  *           DEFDLG_SetDefButton
  85  *
  86  * Set the new default button to be hwndNew.
  87  */
  88 static BOOL DEFDLG_SetDefButton( HWND hwndDlg, DIALOGINFO *dlgInfo,
  89                                  HWND hwndNew )
  90 {
  91     if (hwndNew &&
  92         !(SendMessage16(hwndNew, WM_GETDLGCODE, 0, 0 ) & DLGC_UNDEFPUSHBUTTON))
  93         return FALSE;  /* Destination is not a push button */
  94
  95     if (dlgInfo->msgResult)  /* There's already a default pushbutton */
  96     {
  97         HWND hwndOld = GetDlgItem( hwndDlg, dlgInfo->msgResult );
  98         if (SendMessage32A( hwndOld, WM_GETDLGCODE, 0, 0) & DLGC_DEFPUSHBUTTON)
  99             SendMessage32A( hwndOld, BM_SETSTYLE32, BS_PUSHBUTTON, TRUE );
 100     }
 101     if (hwndNew)
 102     {
 103         SendMessage32A( hwndNew, BM_SETSTYLE32, BS_DEFPUSHBUTTON, TRUE );
 104         dlgInfo->msgResult = GetDlgCtrlID( hwndNew );
 105     }
 106     else dlgInfo->msgResult = 0;
 107     return TRUE;
 108 }
 109
 110
 111 /***********************************************************************
 112  *           DEFDLG_Proc
 113  *
 114  * Implementation of DefDlgProc(). Only handle messages that need special
 115  * handling for dialogs.
 116  */
 117 static LRESULT DEFDLG_Proc( HWND32 hwnd, UINT32 msg, WPARAM32 wParam,
 118                             LPARAM lParam, DIALOGINFO *dlgInfo )
 119 {
 120     switch(msg)
 121     {
 122         case WM_INITDIALOG:
 123             return 0;
 124
 125         case WM_ERASEBKGND:
 126             FillWindow( hwnd, hwnd, (HDC)wParam, (HBRUSH)CTLCOLOR_DLG );
 127             return 1;
 128
 129         case WM_NCDESTROY:
 130
 131               /* Free dialog heap (if created) */
 132             if (dlgInfo->hDialogHeap)
 133             {
 134                 GlobalUnlock16(dlgInfo->hDialogHeap);
 135                 GlobalFree16(dlgInfo->hDialogHeap);
 136                 dlgInfo->hDialogHeap = 0;
 137             }
 138
 139               /* Delete font */
 140             if (dlgInfo->hUserFont)
 141             {
 142                 DeleteObject( dlgInfo->hUserFont );
 143                 dlgInfo->hUserFont = 0;
 144             }
 145
 146               /* Delete menu */
 147             if (dlgInfo->hMenu)
 148             {
 149                 DestroyMenu( dlgInfo->hMenu );
 150                 dlgInfo->hMenu = 0;
 151             }
 152
 153             /* Delete window procedure */
 154             WINPROC_FreeProc( dlgInfo->dlgProc );
 155             dlgInfo->dlgProc = (HWINDOWPROC)0;
 156
 157               /* Window clean-up */
 158             return DefWindowProc32A( hwnd, msg, wParam, lParam );
 159
 160         case WM_SHOWWINDOW:
 161             if (!wParam) DEFDLG_SaveFocus( hwnd, dlgInfo );
 162             return DefWindowProc32A( hwnd, msg, wParam, lParam );
 163
 164         case WM_ACTIVATE:
 165             if (wParam) DEFDLG_RestoreFocus( hwnd, dlgInfo );
 166             else DEFDLG_SaveFocus( hwnd, dlgInfo );
 167             return 0;
 168
 169         case WM_SETFOCUS:
 170             DEFDLG_RestoreFocus( hwnd, dlgInfo );
 171             return 0;
 172
 173         case DM_SETDEFID:
 174             if (dlgInfo->fEnd) return 1;
 175             DEFDLG_SetDefButton( hwnd, dlgInfo,
 176                                  wParam ? GetDlgItem( hwnd, wParam ) : 0 );
 177             return 1;
 178
 179         case DM_GETDEFID:
 180             if (dlgInfo->fEnd || !dlgInfo->msgResult) return 0;
 181             return MAKELONG( dlgInfo->msgResult, DC_HASDEFID );
 182
 183         case WM_NEXTDLGCTL:
 184             {
 185                 HWND hwndDest = (HWND)wParam;
 186                 if (!lParam)
 187                 {
 188                     HWND hwndPrev = GetFocus();
 189                     if (!hwndPrev)  /* Set focus to the first item */
 190                         hwndDest = DIALOG_GetFirstTabItem( hwnd );
 191                     else
 192                         hwndDest = GetNextDlgTabItem( hwnd, hwndPrev, wParam );
 193                 }
 194                 if (hwndDest) DEFDLG_SetFocus( hwnd, hwndDest );
 195                 DEFDLG_SetDefButton( hwnd, dlgInfo, hwndDest );
 196             }
 197             return 0;
 198
 199         case WM_CLOSE:
 200             EndDialog( hwnd, TRUE );
 201             DestroyWindow( hwnd );
 202             return 0;
 203     }
 204     return 0;
 205 }
 206
 207
 208 /***********************************************************************
 209  *           DefDlgProc16   (USER.308)
 210  */
 211 LRESULT DefDlgProc16( HWND16 hwnd, UINT16 msg, WPARAM16 wParam, LPARAM lParam )
 212 {
 213     DIALOGINFO * dlgInfo;
 214     BOOL16 result = FALSE;
 215     WND * wndPtr = WIN_FindWndPtr( hwnd );
 216
 217     if (!wndPtr) return 0;
 218     dlgInfo = (DIALOGINFO *)&wndPtr->wExtra;
 219
 220     dlgInfo->msgResult = 0;
 221     if (dlgInfo->dlgProc)
 222     {
 223           /* Call dialog procedure */
 224         result = (BOOL16)CallWindowProc16( (WNDPROC16)dlgInfo->dlgProc,
 225                                            hwnd, msg, wParam, lParam );
 226
 227         /* Check if window was destroyed by dialog procedure */
 228         if (result || !IsWindow( hwnd )) return result;
 229     }
 230
 231     switch(msg)
 232     {
 233         case WM_INITDIALOG:
 234         case WM_ERASEBKGND:
 235         case WM_NCDESTROY:
 236         case WM_SHOWWINDOW:
 237         case WM_ACTIVATE:
 238         case WM_SETFOCUS:
 239         case DM_SETDEFID:
 240         case DM_GETDEFID:
 241         case WM_NEXTDLGCTL:
 242         case WM_CLOSE:
 243             return DEFDLG_Proc( (HWND32)hwnd, msg, (WPARAM32)wParam,
 244                                 lParam, dlgInfo );
 245
 246         default:
 247             return DefWindowProc16( hwnd, msg, wParam, lParam );
 248     }
 249 }
 250
 251
 252 /***********************************************************************
 253  *           DefDlgProc32A   (USER32.119)
 254  */
 255 LRESULT DefDlgProc32A( HWND32 hwnd, UINT32 msg, WPARAM32 wParam, LPARAM lParam)
 256 {
 257     DIALOGINFO * dlgInfo;
 258     BOOL16 result = FALSE;
 259     WND * wndPtr = WIN_FindWndPtr( hwnd );
 260
 261     if (!wndPtr) return 0;
 262     dlgInfo = (DIALOGINFO *)&wndPtr->wExtra;
 263
 264     dlgInfo->msgResult = 0;
 265     if (dlgInfo->dlgProc)
 266     {
 267           /* Call dialog procedure */
 268         result = (BOOL16)CallWindowProc32A( (WNDPROC32)dlgInfo->dlgProc,
 269                                             hwnd, msg, wParam, lParam );
 270
 271         /* Check if window was destroyed by dialog procedure */
 272         if (result || !IsWindow( hwnd )) return result;
 273     }
 274
 275     switch(msg)
 276     {
 277         case WM_INITDIALOG:
 278         case WM_ERASEBKGND:
 279         case WM_NCDESTROY:
 280         case WM_SHOWWINDOW:
 281         case WM_ACTIVATE:
 282         case WM_SETFOCUS:
 283         case DM_SETDEFID:
 284         case DM_GETDEFID:
 285         case WM_NEXTDLGCTL:
 286         case WM_CLOSE:
 287             return DEFDLG_Proc( hwnd, msg, wParam, lParam, dlgInfo );
 288
 289         default:
 290             return DefWindowProc32A( hwnd, msg, wParam, lParam );
 291     }
 292 }
 293
 294
 295 /***********************************************************************
 296  *           DefDlgProc32W   (USER32.120)
 297  */
 298 LRESULT DefDlgProc32W( HWND32 hwnd, UINT32 msg, WPARAM32 wParam, LPARAM lParam)
 299 {
 300     DIALOGINFO * dlgInfo;
 301     BOOL16 result = FALSE;
 302     WND * wndPtr = WIN_FindWndPtr( hwnd );
 303
 304     if (!wndPtr) return 0;
 305     dlgInfo = (DIALOGINFO *)&wndPtr->wExtra;
 306
 307     dlgInfo->msgResult = 0;
 308     if (dlgInfo->dlgProc)
 309     {
 310           /* Call dialog procedure */
 311         result = (BOOL16)CallWindowProc32W( (WNDPROC32)dlgInfo->dlgProc,
 312                                             hwnd, msg, wParam, lParam );
 313
 314         /* Check if window was destroyed by dialog procedure */
 315         if (result || !IsWindow( hwnd )) return result;
 316     }
 317
 318     switch(msg)
 319     {
 320         case WM_INITDIALOG:
 321         case WM_ERASEBKGND:
 322         case WM_NCDESTROY:
 323         case WM_SHOWWINDOW:
 324         case WM_ACTIVATE:
 325         case WM_SETFOCUS:
 326         case DM_SETDEFID:
 327         case DM_GETDEFID:
 328         case WM_NEXTDLGCTL:
 329         case WM_CLOSE:
 330             return DEFDLG_Proc( hwnd, msg, wParam, lParam, dlgInfo );
 331
 332         default:
 333             return DefWindowProc32W( hwnd, msg, wParam, lParam );
 334     }
 335 }