本人最近利用inkcavas做一個蒙版的功能，結果發現筆跡稀釋了，經過一番查找發現：應該講inkcavas的背景設置為白色，然後透明，而不是將整個控件透明，具體代碼：

<InkCanvas Name="inkContent" Grid.RowSpan="2"
UseCustomCursor="True"
Cursor="{Binding CurrentCursor,ElementName=winWhite,Mode=OneWay}"
EditingModeInverted="Ink"
EditingMode="{Binding CurrentEditMode,ElementName=winWhite,Mode=OneWay}"
DefaultDrawingAttributes="{Binding CurrentPen,ElementName=winWhite,Mode=OneWay}"
Loaded="inkContent_Loaded" >
<InkCanvas.Background>
<SolidColorBrush Color="White" Opacity="0.01" />
</InkCanvas.Background>
</InkCanvas>

WPFのInkCanvas作為蒙版透明筆跡不透明