Move menu messages handling from wxFrame to wxTLW in wxMSW.

This allows to generate the menu open/close/highlight events correctly for the
popup menus used in the dialogs.

Extend the menu sample with a test using such menus.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@73562 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/msw/frame.h

@@ -77,7 +77,6 @@ public:
     // event handlers
     bool HandleSize(int x, int y, WXUINT flag);
     bool HandleCommand(WXWORD id, WXWORD cmd, WXHWND control);
-    bool HandleMenuSelect(WXWORD nItem, WXWORD nFlags, WXHMENU hMenu);
 
     // tooltip management
 #if wxUSE_TOOLTIPS
@@ -105,6 +104,9 @@ public:
     // get the currently active menu: this is the same as the frame menu for
     // normal frames but is overridden by wxMDIParentFrame
     virtual WXHMENU MSWGetActiveMenu() const { return m_hMenu; }
+
+    // Look up the menu in the menu bar.
+    virtual wxMenu* MSWFindMenuFromHMENU(WXHMENU hMenu);
 #endif // wxUSE_MENUS
 
 protected:
@@ -131,18 +133,6 @@ protected:
     // wxMDIChildFrame
     bool MSWDoTranslateMessage(wxFrame *frame, WXMSG *msg);
 
-#if wxUSE_MENUS
-    // handle WM_EXITMENULOOP message for Win95 only
-    bool HandleExitMenuLoop(WXWORD isPopup);
-
-    // handle WM_(UN)INITMENUPOPUP message to generate wxEVT_MENU_OPEN/CLOSE
-    bool HandleMenuPopup(wxEventType evtType, WXHMENU hMenu);
-
-    // Command part of HandleMenuPopup() and HandleExitMenuLoop().
-    bool DoSendMenuOpenCloseEvent(wxEventType evtType, wxMenu* menu, bool popup);
-#endif // wxUSE_MENUS
-
-
     virtual bool IsMDIChild() const { return false; }
 
     // get default (wxWidgets) icon for the frame