DrawingBrush Opacity from 1 to 0 : DrawingImage « Windows Presentation Foundation « C# / CSharp Tutorial

1. C# / CSharp Tutorial
2. Windows Presentation Foundation
3. DrawingImage

<Window x:Class="Workspace.DockExample"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="Workspace" Width="640" Height="480">
    <Window.Resources>
    <DrawingGroup x:Key="myDrawing">
      <DrawingGroup.Children>
        <GeometryDrawing>
          <GeometryDrawing.Geometry>
            <GeometryGroup>
              <LineGeometry StartPoint="0,0" EndPoint="1,1" />
              <LineGeometry StartPoint="0,1" EndPoint="1,0" />
            </GeometryGroup>
          </GeometryDrawing.Geometry>
          <GeometryDrawing.Pen>
            <Pen Thickness="0.2" Brush="#3366FF" />
          </GeometryDrawing.Pen>
        </GeometryDrawing>
        <GeometryDrawing Brush="Red"
         Geometry="M 0.4,0.4 L 0.5,0.2 0.6,0.4 0.5,0.5" />
        <GeometryDrawing Brush="Black"
         Geometry="M 0.4,0.4 L 0.2,0.5 0.4,0.6 0.5,0.5" />
      </DrawingGroup.Children>
    </DrawingGroup>
    </Window.Resources>
    <StackPanel>
    <Rectangle Width="100" Height="50" Stroke="Black" StrokeThickness="1">
      <Rectangle.Fill>
        <DrawingBrush Drawing="{StaticResource myDrawing}" Opacity="1.0" />
      </Rectangle.Fill>
    </Rectangle>
    <Rectangle Width="100" Height="50" Stroke="Black" StrokeThickness="1">
      <Rectangle.Fill>
        <DrawingBrush Drawing="{StaticResource myDrawing}" Opacity="0.75" />
      </Rectangle.Fill>
    </Rectangle>
    <Rectangle Width="100" Height="50" Stroke="Black" StrokeThickness="1">
      <Rectangle.Fill>
        <DrawingBrush Drawing="{StaticResource myDrawing}" Opacity="0.5" />
      </Rectangle.Fill>
    </Rectangle>
    <Rectangle Width="100" Height="50" Stroke="Black" StrokeThickness="1">
      <Rectangle.Fill>
        <DrawingBrush Drawing="{StaticResource myDrawing}" Opacity="0.25" />
      </Rectangle.Fill>
    </Rectangle>
    <Rectangle Width="100" Height="50" Stroke="Black" StrokeThickness="1">
      <Rectangle.Fill>
        <DrawingBrush Drawing="{StaticResource myDrawing}" Opacity="0" />
      </Rectangle.Fill>
    </Rectangle>
    </StackPanel>

</Window>

24.100.DrawingImage
	24.100.1.	Create buttons using DrawingImage and GeometryDrawing
	24.100.2.	Applies a DrawingBrush and DrawingGroup to draw gridlines as a background of a Grid control.
	24.100.3.	Create buttons using DrawingImage objects
	24.100.4.	VisualBrush and TileMode
	24.100.5.	Duplicate VisualBrush
	24.100.6.	DrawingBrush Opacity from 1 to 0