Add BWindow::HasShortcut()

headers/os/interface/Window.h

@@ -132,6 +132,7 @@ public:
 									BMessage* message);
 			void				AddShortcut(uint32 key, uint32 modifiers,
 									BMessage* message, BHandler* target);
+			bool				HasShortcut(uint32 key, uint32 modifiers);
 			void				RemoveShortcut(uint32 key, uint32 modifiers);
 
 			void				SetDefaultButton(BButton* button);

src/kits/interface/Window.cpp

@@ -1859,6 +1859,13 @@ BWindow::AddShortcut(uint32 key, uint32 modifiers, BMessage* message,
 }
 
 
+bool
+BWindow::HasShortcut(uint32 key, uint32 modifiers)
+{
+	return _FindShortcut(key, modifiers) != NULL;
+}
+
+
 void
 BWindow::RemoveShortcut(uint32 key, uint32 modifiers)
 {