1. wxMDIParentFrame::~wxMDIParentFrame() bug fixed

2. tooltips work with wxRadioBox
3. duplicated OnCtlColor()s moved to wxControl


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@4693 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/msw/tooltip.h

@@ -35,14 +35,17 @@ public:
     void RelayEvent(WXMSG *msg);
 
 private:
-    static WXHWND hwndTT;
-    // create the tooltip ctrl for our parent frame if it doesn't exist yet
-    // and return its window handle
+    static WXHWND ms_hwndTT;
+
+    // create the tooltip ctrl if it doesn't exist yet and return its HWND
     WXHWND GetToolTipCtrl();
 
     // remove this tooltip from the tooltip control
     void Remove();
 
+    // add a window to the tooltip control
+    void Add(WXHWND hwnd);
+
     wxString  m_text;           // tooltip text
     wxWindow *m_window;         // window we're associated with
 };