Complete wxEVT_MENU_{OPEN,CLOSE} implementation in wxMSW and wxOSX.

Set the wxMenu correctly for wxEVT_MENU_CLOSE events in wxMSW.

Set the menu id correctly to allow wxMenuEvent::IsPopup() to work for both
wxEVT_MENU_OPEN and wxEVT_MENU_CLOSE in wxOSX.

Closes #11313.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@70151 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/msw/frame.h

@@ -79,7 +79,6 @@ public:
     bool HandleSize(int x, int y, WXUINT flag);
     bool HandleCommand(WXWORD id, WXWORD cmd, WXHWND control);
     bool HandleMenuSelect(WXWORD nItem, WXWORD nFlags, WXHMENU hMenu);
-    bool HandleMenuLoop(const wxEventType& evtType, WXWORD isPopup);
 
     // tooltip management
 #if wxUSE_TOOLTIPS
@@ -133,8 +132,8 @@ protected:
     // wxMDIChildFrame
     bool MSWDoTranslateMessage(wxFrame *frame, WXMSG *msg);
 
-    // handle WM_INITMENUPOPUP message to generate wxEVT_MENU_OPEN
-    bool HandleInitMenuPopup(WXHMENU hMenu);
+    // handle WM_(UN)INITMENUPOPUP message to generate wxEVT_MENU_OPEN/CLOSE
+    bool HandleMenuPopup(wxEventType evtType, WXHMENU hMenu);
 
     virtual bool IsMDIChild() const { return false; }