在我的WPF应用程序中,我在一个网格中添加了WindowsFormsHost,我想在WinFormsHost中的控件上绘制一个矩形。无法使用WPF中的装饰在WindowsFormsHost上绘制矩形
应用布局:我想
代码:
装饰器类
public class SimpleRectAdorner : Adorner
{
// Be sure to call the base class constructor.
public SimpleRectAdorner(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 drawingContext)
{
Rect adornedElementRect = new Rect(this.AdornedElement.DesiredSize);
// Some arbitrary drawing implements.
SolidColorBrush renderBrush = new SolidColorBrush(Colors.Green);
renderBrush.Opacity = 0.2;
Pen renderPen = new Pen(new SolidColorBrush(Colors.Navy), 1.5);
// Draw a circle at each corner.
Rect rect = new Rect(new Point(adornedElementRect.TopLeft.X, adornedElementRect.TopLeft.Y + 50), new Size(150, 50));
drawingContext.DrawRectangle(renderBrush, renderPen, rect);
}
}
代码添加装饰器
private void btnDraw_Click(object sender, RoutedEventArgs e)
{
AdornerLayer.GetAdornerLayer(viewerGrid.Children[0]).Add(new SimpleRectAdorner(viewerGrid.Children[0]));
}
是否有任何可能的方式来绘制在WindowsFormsHost内的控制矩形?
在此先感谢。
请参阅:http://stackoverflow.com/q/9920480/1136211 – Clemens