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             if (dlgInfo->dlgProc)
 155             {
 156                 WINPROC_FreeWinProc( dlgInfo->dlgProc );
 157                 dlgInfo->dlgProc = 0;
 158             }
 159
 160               /* Window clean-up */
 161             return DefWindowProc32A( hwnd, msg, wParam, lParam );
 162
 163         case WM_SHOWWINDOW:
 164             if (!wParam) DEFDLG_SaveFocus( hwnd, dlgInfo );
 165             return DefWindowProc32A( hwnd, msg, wParam, lParam );
 166
 167         case WM_ACTIVATE:
 168             if (wParam) DEFDLG_RestoreFocus( hwnd, dlgInfo );
 169             else DEFDLG_SaveFocus( hwnd, dlgInfo );
 170             return 0;
 171
 172         case WM_SETFOCUS:
 173             DEFDLG_RestoreFocus( hwnd, dlgInfo );
 174             return 0;
 175
 176         case DM_SETDEFID:
 177             if (dlgInfo->fEnd) return 1;
 178             DEFDLG_SetDefButton( hwnd, dlgInfo,
 179                                  wParam ? GetDlgItem( hwnd, wParam ) : 0 );
 180             return 1;
 181
 182         case DM_GETDEFID:
 183             if (dlgInfo->fEnd || !dlgInfo->msgResult) return 0;
 184             return MAKELONG( dlgInfo->msgResult, DC_HASDEFID );
 185
 186         case WM_NEXTDLGCTL:
 187             {
 188                 HWND hwndDest = (HWND)wParam;
 189                 if (!lParam)
 190                 {
 191                     HWND hwndPrev = GetFocus();
 192                     if (!hwndPrev)  /* Set focus to the first item */
 193                         hwndDest = DIALOG_GetFirstTabItem( hwnd );
 194                     else
 195                         hwndDest = GetNextDlgTabItem( hwnd, hwndPrev, wParam );
 196                 }
 197                 if (hwndDest) DEFDLG_SetFocus( hwnd, hwndDest );
 198                 DEFDLG_SetDefButton( hwnd, dlgInfo, hwndDest );
 199             }
 200             return 0;
 201
 202         case WM_CLOSE:
 203             EndDialog( hwnd, TRUE );
 204             DestroyWindow( hwnd );
 205             return 0;
 206     }
 207     return 0;
 208 }
 209
 210
 211 /***********************************************************************
 212  *           DefDlgProc16   (USER.308)
 213  */
 214 LRESULT DefDlgProc16( HWND16 hwnd, UINT16 msg, WPARAM16 wParam, LPARAM lParam )
 215 {
 216     DIALOGINFO * dlgInfo;
 217     BOOL16 result = FALSE;
 218     WND * wndPtr = WIN_FindWndPtr( hwnd );
 219
 220     if (!wndPtr) return 0;
 221     dlgInfo = (DIALOGINFO *)&wndPtr->wExtra;
 222
 223     dlgInfo->msgResult = 0;
 224     if (dlgInfo->dlgProc)
 225     {
 226           /* Call dialog procedure */
 227         result = (BOOL16)CallWindowProc16( (WNDPROC16)dlgInfo->dlgProc, hwnd,
 228                                            msg, wParam, lParam );
 229
 230         /* Check if window was destroyed by dialog procedure */
 231         if (result || !IsWindow( hwnd )) return result;
 232     }
 233
 234     switch(msg)
 235     {
 236         case WM_INITDIALOG:
 237         case WM_ERASEBKGND:
 238         case WM_NCDESTROY:
 239         case WM_SHOWWINDOW:
 240         case WM_ACTIVATE:
 241         case WM_SETFOCUS:
 242         case DM_SETDEFID:
 243         case DM_GETDEFID:
 244         case WM_NEXTDLGCTL:
 245         case WM_CLOSE:
 246             return DEFDLG_Proc( (HWND32)hwnd, msg, (WPARAM32)wParam,
 247                                 lParam, dlgInfo );
 248
 249         default:
 250             return DefWindowProc16( hwnd, msg, wParam, lParam );
 251     }
 252 }
 253
 254
 255 /***********************************************************************
 256  *           DefDlgProc32A   (USER32.119)
 257  */
 258 LRESULT DefDlgProc32A( HWND32 hwnd, UINT32 msg, WPARAM32 wParam, LPARAM lParam)
 259 {
 260     DIALOGINFO * dlgInfo;
 261     BOOL16 result = FALSE;
 262     WND * wndPtr = WIN_FindWndPtr( hwnd );
 263
 264     if (!wndPtr) return 0;
 265     dlgInfo = (DIALOGINFO *)&wndPtr->wExtra;
 266
 267     dlgInfo->msgResult = 0;
 268     if (dlgInfo->dlgProc)
 269     {
 270           /* Call dialog procedure */
 271         result = (BOOL16)CallWindowProc32A( (WNDPROC32)dlgInfo->dlgProc, hwnd,
 272                                             msg, wParam, lParam );
 273
 274         /* Check if window was destroyed by dialog procedure */
 275         if (result || !IsWindow( hwnd )) return result;
 276     }
 277
 278     switch(msg)
 279     {
 280         case WM_INITDIALOG:
 281         case WM_ERASEBKGND:
 282         case WM_NCDESTROY:
 283         case WM_SHOWWINDOW:
 284         case WM_ACTIVATE:
 285         case WM_SETFOCUS:
 286         case DM_SETDEFID:
 287         case DM_GETDEFID:
 288         case WM_NEXTDLGCTL:
 289         case WM_CLOSE:
 290             return DEFDLG_Proc( hwnd, msg, wParam, lParam, dlgInfo );
 291
 292         default:
 293             return DefWindowProc32A( hwnd, msg, wParam, lParam );
 294     }
 295 }
 296
 297
 298 /***********************************************************************
 299  *           DefDlgProc32W   (USER32.120)
 300  */
 301 LRESULT DefDlgProc32W( HWND32 hwnd, UINT32 msg, WPARAM32 wParam, LPARAM lParam)
 302 {
 303     DIALOGINFO * dlgInfo;
 304     BOOL16 result = FALSE;
 305     WND * wndPtr = WIN_FindWndPtr( hwnd );
 306
 307     if (!wndPtr) return 0;
 308     dlgInfo = (DIALOGINFO *)&wndPtr->wExtra;
 309
 310     dlgInfo->msgResult = 0;
 311     if (dlgInfo->dlgProc)
 312     {
 313           /* Call dialog procedure */
 314         result = (BOOL16)CallWindowProc32W( (WNDPROC32)dlgInfo->dlgProc, hwnd,
 315                                             msg, wParam, lParam );
 316
 317         /* Check if window was destroyed by dialog procedure */
 318         if (result || !IsWindow( hwnd )) return result;
 319     }
 320
 321     switch(msg)
 322     {
 323         case WM_INITDIALOG:
 324         case WM_ERASEBKGND:
 325         case WM_NCDESTROY:
 326         case WM_SHOWWINDOW:
 327         case WM_ACTIVATE:
 328         case WM_SETFOCUS:
 329         case DM_SETDEFID:
 330         case DM_GETDEFID:
 331         case WM_NEXTDLGCTL:
 332         case WM_CLOSE:
 333             return DEFDLG_Proc( hwnd, msg, wParam, lParam, dlgInfo );
 334
 335         default:
 336             return DefWindowProc32W( hwnd, msg, wParam, lParam );
 337     }
 338 }