Don't mention non-existent setup.exe in wxMSW installation notes.

[wxWidgets.git] / include / wx / menu.h

diff --git a/include/wx/menu.h b/include/wx/menu.h
index 876a72e1622568fa47dcd0538b11bb2b48c9d803..accb6f1d7ea8b32a3bb247c7b4c1ba0bafba00a7 100644 (file)
--- a/include/wx/menu.h
+++ b/include/wx/menu.h
@@ -27,6 +27,7 @@
 // included wx/menu.h
 #include "wx/menuitem.h"
 
+class WXDLLIMPEXP_FWD_CORE wxFrame;
 class WXDLLIMPEXP_FWD_CORE wxMenu;
 class WXDLLIMPEXP_FWD_CORE wxMenuBarBase;
 class WXDLLIMPEXP_FWD_CORE wxMenuBar;
@@ -254,10 +255,21 @@ public:
     void SetEventHandler(wxEvtHandler *handler) { m_eventHandler = handler; }
     wxEvtHandler *GetEventHandler() const { return m_eventHandler; }
 
-    // invoking window
-    void SetInvokingWindow(wxWindow *win) { m_invokingWindow = win; }
+    // Invoking window: this is set by wxWindow::PopupMenu() before showing a
+    // popup menu and reset after it's hidden. Notice that you probably want to
+    // use GetWindow() below instead of GetInvokingWindow() as the latter only
+    // returns non-NULL for the top level menus
+    //
+    // NB: avoid calling SetInvokingWindow() directly if possible, use
+    //     wxMenuInvokingWindowSetter class below instead
+    void SetInvokingWindow(wxWindow *win);
     wxWindow *GetInvokingWindow() const { return m_invokingWindow; }
 
+    // the window associated with this menu: this is the invoking window for
+    // popup menus or the top level window to which the menu bar is attached
+    // for menus which are part of a menu bar
+    wxWindow *GetWindow() const;
+
     // style
     long GetStyle() const { return m_style; }
 
@@ -542,7 +554,35 @@ protected:
 #endif
 #endif // wxUSE_BASE_CLASSES_ONLY/!wxUSE_BASE_CLASSES_ONLY
 
+// ----------------------------------------------------------------------------
+// Helper class used in the implementation only: sets the invoking window of
+// the given menu in its ctor and resets it in dtor.
+// ----------------------------------------------------------------------------
+
+class wxMenuInvokingWindowSetter
+{
+public:
+    // Ctor sets the invoking window for the given menu.
+    //
+    // The menu lifetime must be greater than that of this class.
+    wxMenuInvokingWindowSetter(wxMenu& menu, wxWindow *win)
+        : m_menu(menu)
+    {
+        menu.SetInvokingWindow(win);
+    }
+
+    // Dtor resets the invoking window.
+    ~wxMenuInvokingWindowSetter()
+    {
+        m_menu.SetInvokingWindow(NULL);
+    }
+
+private:
+    wxMenu& m_menu;
+
+    wxDECLARE_NO_COPY_CLASS(wxMenuInvokingWindowSetter);
+};
+
 #endif // wxUSE_MENUS
 
-#endif
-    // _WX_MENU_H_BASE_
+#endif // _WX_MENU_H_BASE_