private static void TabControl_Loaded(object sender, RoutedEventArgs e)
{
TabControl tabControl = (TabControl)sender;
tabControl.Loaded -= TabTearOffBehavior.TabControl_Loaded;
TabTearOffBehavior.SetWindowMaintainZIndex(tabControl, true);
}
private static void HandlerProperty_PropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
TabControl tabControl = d as TabControl;
if (tabControl == null)
{
return;
}
if (e.NewValue == null && e.OldValue != null)
{
WeakEventManager <TabControl, MouseButtonEventArgs> .RemoveHandler(tabControl, nameof(TabControl.PreviewMouseLeftButtonDown), TabTearOffBehavior.TabControl_PreviewMouseLeftButtonDown);
if (!tabControl.IsLoaded)
{
tabControl.Loaded -= TabTearOffBehavior.TabControl_Loaded;
}
else
{
TabTearOffBehavior.SetWindowMaintainZIndex(tabControl, false);
}
}
else if (e.NewValue != null && e.OldValue == null)
{
WeakEventManager <TabControl, MouseButtonEventArgs> .AddHandler(tabControl, nameof(TabControl.PreviewMouseLeftButtonDown), TabTearOffBehavior.TabControl_PreviewMouseLeftButtonDown);
if (!tabControl.IsLoaded)
{
tabControl.Loaded += TabTearOffBehavior.TabControl_Loaded;
}
else
{
TabTearOffBehavior.SetWindowMaintainZIndex(tabControl, true);
}
}
}