public CocoaMenu SetSubMenu(string label)
{
if (label == null)
{
throw new ArgumentNullException(nameof(label));
}
if (subMenu != null)
{
throw new InvalidOperationException("Submenu is already created");
}
subMenu = new CocoaSubMenu(Handle, label, true);
return(subMenu.NativeMenu);
}
public override IMenu CreateSubMenu()
{
return(subMenu = new CocoaSubMenu(Handle, Label));
}
