X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/96d38c7e0df2138cff3505dbba7d93111254ba5f..7533ba252ba505f159f504a34877793fb32d8bca:/src/msw/evtloop.cpp

diff --git a/src/msw/evtloop.cpp b/src/msw/evtloop.cpp
index 4325bbdd0a..6534242141 100644
--- a/src/msw/evtloop.cpp
+++ b/src/msw/evtloop.cpp
@@ -85,6 +85,7 @@ private:
 // ============================================================================
 
 wxEventLoop *wxEventLoopBase::ms_activeLoop = NULL;
+wxWindowMSW *wxEventLoop::ms_winCritical = NULL;
 
 // ----------------------------------------------------------------------------
 // ctor/dtor
@@ -111,10 +112,24 @@ void wxEventLoop::ProcessMessage(WXMSG *msg)
     }
 }
 
+bool wxEventLoop::IsChildOfCriticalWindow(wxWindowMSW *win)
+{
+    while ( win )
+    {
+        if ( win == ms_winCritical )
+            return true;
+
+        win = win->GetParent();
+    }
+
+    return false;
+}
+
 bool wxEventLoop::PreProcessMessage(WXMSG *msg)
 {
     HWND hwnd = msg->hwnd;
-    wxWindow *wndThis = wxGetWindowFromHWND((WXHWND)hwnd);
+    wxWindow * const wndThis = wxGetWindowFromHWND((WXHWND)hwnd);
+    wxWindow *wnd;
 
     // this may happen if the event occurred in a standard modeless dialog (the
     // only example of which I know of is the find/replace dialog) - then call
@@ -132,6 +147,17 @@ bool wxEventLoop::PreProcessMessage(WXMSG *msg)
         return hwnd && ::IsDialogMessage(hwnd, msg) != 0;
     }
 
+    if ( !AllowProcessing(wndThis) )
+    {
+        // not a child of critical window, so we eat the event but take care to
+        // stop an endless stream of WM_PAINTs which would have resulted if we
+        // didn't validate the invalidated part of the window
+        if ( msg->message == WM_PAINT )
+            ::ValidateRect(hwnd, NULL);
+
+        return true;
+    }
+
 #if wxUSE_TOOLTIPS
     // we must relay WM_MOUSEMOVE events to the tooltip ctrl if we want it to
     // popup the tooltip bubbles
@@ -154,8 +180,6 @@ bool wxEventLoop::PreProcessMessage(WXMSG *msg)
     }
 
     // try translations first: the accelerators override everything
-    wxWindow *wnd;
-
     for ( wnd = wndThis; wnd; wnd = wnd->GetParent() )
     {
         if ( wnd->MSWTranslateMessage((WXMSG *)msg))