added wxNotificationMessage::AlwaysUseGeneric() MSW-specific method

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@50434 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/msw/notifmsg.h

@@ -47,11 +47,21 @@ public:
     // returns the task bar icon which was used previously (may be NULL)
     static wxTaskBarIcon *UseTaskBarIcon(wxTaskBarIcon *icon);
 
+    // call this to always use the generic implementation, even if the system
+    // supports the balloon tooltips used by the native one
+    static void AlwaysUseGeneric(bool alwaysUseGeneric)
+    {
+        ms_alwaysUseGeneric = alwaysUseGeneric;
+    }
+
 private:
     // common part of all ctors
     void Init() { m_impl = NULL; }
 
 
+    // flag indicating whether we should always use generic implementation
+    static bool ms_alwaysUseGeneric;
+
     // the real implementation of this class (selected during run-time because
     // the balloon task bar icons are not available in all Windows versions)
     class wxNotifMsgImpl *m_impl;