static void HelpInfoChange(DependencyObject o, DependencyPropertyChangedEventArgs args)
{
UIElement element = (UIElement)o;
var layer = AdornerLayer.GetAdornerLayer(element);
HelpToolTipInfo info = (HelpToolTipInfo)args.NewValue;
if (info == null)
{
foreach (var ad in layer.GetAdorners(element).EmptyIfNull().OfType <HelpAdorner>().ToList())
{
layer.Remove(ad);
}
}
else
{
layer.Add(new HelpAdorner(element)
{
ToolTip = new ToolTip
{
Content = new HelpToolTip
{
DataContext = info
}
}
});
}
}
public static void SetHelpInfo(DependencyObject obj, HelpToolTipInfo value)
{
obj.SetValue(HelpInfoProperty, value);
}
