Added some XSyncs to help size calculations, but positioning

dialog remains a mystery


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@14208 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/x11/utils.cpp

@@ -1231,3 +1231,11 @@ void wxDoChangeBackgroundColour(WXWidget widget, wxColour& backgroundColour, boo
 
 #endif
     // __WXMOTIF__
+
+bool wxWindowIsVisible(Window win)
+{
+    XWindowAttributes wa;
+    XGetWindowAttributes(wxGlobalDisplay(), win, &wa);
+
+    return (wa.map_state == IsViewable);
+}