prevent the parent window from losing activation when a popup is shown

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@15662 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/popupwin.h

@@ -86,8 +86,10 @@ public:
 
     // hide the window
     virtual void Dismiss();
-    
 
+    // can the window be dismissed now?
+    //
+    // VZ: where is this used??
     virtual bool CanDismiss()
         { return TRUE; }