private static CanvasDragDropBehavior GetAttachedBehavior(Canvas canvas)
{
if (!instances.ContainsKey(canvas))
{
instances[canvas] = new CanvasDragDropBehavior();
instances[canvas].AssociatedObject = canvas;
}
return(instances[canvas]);
}
private static CanvasDragDropBehavior GetAttachedBehavior(Canvas canvas)
{
if (!instances.ContainsKey(canvas))
{
instances[canvas] = new CanvasDragDropBehavior();
instances[canvas].AssociatedObject = canvas;
}
return instances[canvas];
}
public static void SetIsEnabled(DependencyObject obj, bool value)
{
CanvasDragDropBehavior behavior = GetAttachedBehavior(obj as Canvas);
behavior.AssociatedObject = obj as Canvas;
if (value)
{
behavior.Initialize();
}
else
{
behavior.CleanUp();
}
obj.SetValue(IsEnabledProperty, value);
}