dozob

UIElement 위에 정보, 기능 등을 표시하기 위해 사용하는 사용자 지정 FrameworkElement

Adorner는 UIElement 내에 AdornerLayer를 생성하여 그 위에 객체를 배치하므로 어떤 객체들보다 상위에 나타난다.

(Z-inddex 등을 조절하는 것보다 편한 방법)

MSDN

// Adorners must subclass the abstract base class Adorner.
public class SimpleCircleAdorner : Adorner
{
    // Be sure to call the base class constructor.
    public SimpleCircleAdorner(UIElement adornedElement)
        : base(adornedElement) 
    { 
    }
 
    // A common way to implement an adorner's rendering behavior is to override the OnRender
    // method, which is called by the layout system as part of a rendering pass.
    protected override void OnRender(DrawingContext dc)
    {
        Rect adornedElementRect = new Rect(this.AdornedElement.DesiredSize);
 
        // Some arbitrary drawing implements.
        var renderBrush = new SolidColorBrush(Colors.Green);
        renderBrush.Opacity = 0.2;
        Pen renderPen = new Pen(new SolidColorBrush(Colors.Navy), 1.5);
        double renderRadius = 5.0;
 
        // Draw a circle at each corner.
        dc.DrawEllipse(renderBrush, renderPen, adornedElementRect.TopLeft, renderRadius, renderRadius);
        dc.DrawEllipse(renderBrush, renderPen, adornedElementRect.TopRight, renderRadius, renderRadius);
        dc.DrawEllipse(renderBrush, renderPen, adornedElementRect.BottomLeft, renderRadius, renderRadius);
        dc.DrawEllipse(renderBrush, renderPen, adornedElementRect.BottomRight, renderRadius, renderRadius);
    }
}

myAdornerLayer = AdornerLayer.GetAdornerLayer(myTextBox);
myAdornerLayer.Add(new SimpleCircleAdorner(myTextBox));

★마우스 이벤트를 받지 않고 통과시키려면

myAdorner.IsHitTestVisible = false;