EVT_UPDATE_UI(ID_HorizontalGradient, MyFrame::OnUpdateUI)
EVT_MENU_RANGE(MyFrame::ID_FirstPerspective, MyFrame::ID_FirstPerspective+1000,
MyFrame::OnRestorePerspective)
EVT_UPDATE_UI(ID_HorizontalGradient, MyFrame::OnUpdateUI)
EVT_MENU_RANGE(MyFrame::ID_FirstPerspective, MyFrame::ID_FirstPerspective+1000,
MyFrame::OnRestorePerspective)