Changeset 6902 for trunk/src/user32/dcrgn.cpp

Timestamp:

Oct 1, 2001, 12:24:42 AM (24 years ago)

Author:

sandervl

Message:

added visible region callback function

File:

• trunk/src/user32/dcrgn.cpp (modified) (2 diffs)

trunk/src/user32/dcrgn.cpp

@@ -1 @@
-/* $Id: dcrgn.cpp,v 1.6 2001-06-09 14:50:17 sandervl Exp $ */
+/* $Id: dcrgn.cpp,v 1.7 2001-09-30 22:24:41 sandervl Exp $ */
 
 /*
@@ -245 +245 @@
 }
 //******************************************************************************
-//******************************************************************************
+// WinSetVisibleRgnNotifyProc
+//   To set a notification procedure for visible region changes of a specific window.
+//   The procedure will be called when a WM_VRNENABLED message is posted
+//   with ffVisRgnChanged set to TRUE
+//
+// Parameters:
+//   HWND hwnd                          window handle
+//   VISRGN_NOTIFY_PROC lpNotifyProc    notification proc or NULL to clear proc
+//   DWORD dwUserData                   value used as 3rd parameter during
+//                                      visible region callback
+//
+// NOTE: Internal API
+//******************************************************************************
+BOOL WIN32API WinSetVisibleRgnNotifyProc(HWND hwnd, VISRGN_NOTIFY_PROC lpNotifyProc, 
+                                         DWORD dwUserData)
+{
+  Win32BaseWindow *window;
+
+    window = Win32BaseWindow::GetWindowFromHandle(hwnd);
+    if(!window) {
+        dprintf(("WinSetVisibleRgnNotifyProc, window %x not found", hwnd));
+        return FALSE;
+    }
+    BOOL ret = window->setVisibleRgnNotifyProc(lpNotifyProc, dwUserData);
+    RELEASE_WNDOBJ(window);
+    return ret;
+}
+//******************************************************************************
+//******************************************************************************