我有一个在Window中动态绘制的矩形。所述窗口具有背景,其不透明度设置为0.4。 我想让矩形内的区域完全透明(看看窗户后面是什么)。
有没有办法做到这一点?
以下是我的窗口代码:
<Window x:Class="TakeAScreenzone"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="PloofTAS" Height="355" Width="539" Topmost="True"
ResizeMode="NoResize" AllowsTransparency="True"
ShowInTaskbar="False" ShowActivated="True" WindowStyle="None" Background="#66FFFFFF" >
<Grid Name="Grid1"></Grid>
</Window>
这里是我用来绘制矩形的代码(其中Grid1是我窗口的主网格):
WorkingRectangle = New Rectangle
WorkingRectangle.Stroke = New SolidColorBrush(Colors.Red)
WorkingRectangle.StrokeThickness = 1
WorkingRectangle.Fill = Nothing
WorkingRectangle.HorizontalAlignment = Windows.HorizontalAlignment.Left
WorkingRectangle.VerticalAlignment = Windows.VerticalAlignment.Top
Grid1.Children.Add(WorkingRectangle)
答案 0 :(得分:4)
我相信,您可以使用以下方法(这里我在窗口中心创建了一个矩形孔):
<Window x:Class="WpfApplication1.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="PloofTAS" Height="355" Width="539" Topmost="True"
ResizeMode="NoResize" AllowsTransparency="True"
ShowInTaskbar="False" ShowActivated="True" WindowStyle="None" Background="Transparent">
<Grid Name="Grid1">
<Grid.RowDefinitions>
<RowDefinition Height="*" />
<RowDefinition Height="*" />
<RowDefinition Height="*" />
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" />
<ColumnDefinition Width="*" />
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<Rectangle Fill="#66FFFFFF" Grid.Column="0" Grid.RowSpan="3"/>
<Rectangle Fill="#66FFFFFF" Grid.Column="2" Grid.RowSpan="3"/>
<Rectangle Fill="#66FFFFFF" Grid.Column="1" Grid.Row="0"/>
<Rectangle Fill="#66FFFFFF" Grid.Column="1" Grid.Row="2"/>
<Rectangle x:Name="workingRectangle" Fill="Transparent" Stroke="Red" Grid.Column="1" Grid.Row="1"/>
</Grid>
</Window>
答案 1 :(得分:0)
将内部矩形设为Opacity Mask。