如何在WPF中透明椭圆 [英] How to transparent ellipse in WPF

问题描述

如何透明椭圆像Window允许透明度。



我尝试过：

how to transparent Ellipse like Window AllowsTransparency.

What I have tried:

<grid>
        <ellipse name="eelipse">
             Stretch="Fill"
             Fill="Transparent"
             Stroke="Bisque" 
             StrokeThickness="2"
        </ellipse>
    </grid>

透明窗口不完全透明。 AllowTransparency =true显示完整透明窗口，我希望只有部分椭圆可以完全透明。



请帮助我。

This transparent for window not full transparent . AllowsTransparency="true" show you full transparent window like i want to only part of ellipse can full transparent.

Please help me.

推荐答案

首先设置为窗口

first set to window

AllowsTransparency="True" WindowStyle="None"

<Window.Background >
      <SolidColorBrush x:Name="BackgroundBrush" Color="BlanchedAlmond" Opacity="0" ></SolidColorBrush>
  </Window.Background>

绘制带填充颜色的矩形并在此矩形中绘制椭圆

< Path Stroke =BlackStrokeThickness =5Fill =WhiteSmokeOpacity =100>

< Path .Data>

< CombinedGeometry GeometryCombineMode =Xor>

< CombinedGeometry.Geometry1>

< RectangleGeometry Rect =0 ，0,600,700/>

< /CombinedGeometry.Geometry1>

< CombinedGeometry。 Geometry2>

< EllipseGeometry RadiusX =300RadiusY =300Center =300,300/>

< /CombinedGeometry.Geometry2>

< / CombinedGeometry>

< /Path.Data>

< / Path>



椭圆是完全透明的。

draw rectangle with fill color and in this rectangle draw ellipse
<Path Stroke="Black" StrokeThickness="5" Fill="WhiteSmoke" Opacity="100">
<Path.Data>
<CombinedGeometry GeometryCombineMode="Xor">
<CombinedGeometry.Geometry1>
<RectangleGeometry Rect="0,0,600,700" />
</CombinedGeometry.Geometry1>
<CombinedGeometry.Geometry2>
<EllipseGeometry RadiusX="300" RadiusY="300" Center="300,300" />
</CombinedGeometry.Geometry2>
</CombinedGeometry>
</Path.Data>
</Path>

ellipse is full transparent.

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