void MyFrame::OnCheck(wxCommandEvent& event){ if(event.IsChecked()){ wxMessageBox("The checkbox is checked!"); } else{ wxMessageBox("The checkbox is unchecked!"); } }
void MyFrame::OnMenu(wxCommandEvent& event){ if(event.IsChecked()){ wxMessageBox("The menu item is checked!"); // Do some action when checked } else{ wxMessageBox("The menu item is unchecked!"); // Do some action when unchecked } }In this example, the IsChecked function is called on a wxCommandEvent object passed by the OnMenu event handler. If the menu item is checked, the message "The menu item is checked!" will be displayed, otherwise "The menu item is unchecked!" will be displayed. This is useful for performing actions when a menu item is toggled on or off. Package library: wxWidgets.