子控件意外改变不透明蒙版
我想制作一块具有圆形边框的画布。我想我可以通过OpacityMask来实现它。但这对我来说很难。
<Canvas Background="Red" ClipToBounds="True" x:Name="can">
<Canvas.OpacityMask>
<!--czc.png is opacity mask source which represents a rounded rectangle.-->
<ImageBrush ImageSource="/WpfApplication3;component/Images/czc.png"/>
</Canvas.OpacityMask>
<Image Source="/WpfApplication3;component/Images/1lvhuman.jpg" Margin="-129,56,192,46" Canvas.Left="193" Canvas.Top="25" Height="186" Width="153" />
</Canvas>
图 1. 是画布中未悬挂在画布边框中的图像。相反，图 2 的图像悬挂在 Canvas 的左边框中。当挂在那里时，OpacityMask 被改变了。
I want to make a canvas which has rounded border. I think I can implement it by OpacityMask. but it's a hard to me.
<Canvas Background="Red" ClipToBounds="True" x:Name="can">
<Canvas.OpacityMask>
<!--czc.png is opacity mask source which represents a rounded rectangle.-->
<ImageBrush ImageSource="/WpfApplication3;component/Images/czc.png"/>
</Canvas.OpacityMask>
<Image Source="/WpfApplication3;component/Images/1lvhuman.jpg" Margin="-129,56,192,46" Canvas.Left="193" Canvas.Top="25" Height="186" Width="153" />
</Canvas>
figure 1. is the Image in canvas that don't hanged in the Canvas's border. In the contrary, the Image of figure 2 hanged in left border of the Canvas. when hanged in there, OpacityMask was changed.
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你为什么使用画布？您可以只使用带有 BorderRadius 的 Border 吗？
Why are you using Canvas? Can you just use a Border with a BorderRadius instead?