private static DependencyPropertyChangedCallbacks GetCallbacksForElement(DependencyObject element)
{
var callbacks = GetDependencyPropertyCallbacks(element);
if (callbacks == null)
{
callbacks = new DependencyPropertyChangedCallbacks();
SetDependencyPropertyCallbacks(element, callbacks);
}
return(callbacks);
}
public static void SetDependencyPropertyCallbacks(
DependencyObject dependencyObject, DependencyPropertyChangedCallbacks value)
{
dependencyObject.SetValue(DependencyPropertyCallbacksProperty, value);
}
