試圖擦除inkcanvas中單擊一條線繪製

Question

我試圖擦除inkcanvas中單擊繪製的線條。 我的要求是，如果我在給定的區域上繪製一條線或任何圖案，它將刪除所有繪製在一個點擊線，並再次繪製任何東西，然後單擊'擦除'按鈕將清除當前屏幕上繪製的所有線。

的XAML

<Grid x:Name="Bg_BigRect" Background="White" 
     Width="310" Height="440" 
     RelativePanel.Below="Bg_Rect" 
     Margin="24,10,0,0"> 
    <Image x:Name="Trans_Tex" Source="WorkBook/T0.png"        
      Margin="-10,0,0,20" 
      Width="310" Height="370"/> 
     <InkCanvas x:Name="ink"/> 
</Grid> 

C＃代碼

public WorkBook() 
{ 
    this.InitializeComponent(); 
    ink.InkPresenter.InputDeviceTypes = CoreInputDeviceTypes.Mouse | CoreInputDeviceTypes.Touch;  

    // Set initial ink stroke attributes. 
    InkDrawingAttributes drawingAttributes = new InkDrawingAttributes(); 
    drawingAttributes.Color = Windows.UI.Colors.Black; 
    drawingAttributes.IgnorePressure = false; 
    drawingAttributes.FitToCurve = true; 
    ink.InkPresenter.UpdateDefaultDrawingAttributes(drawingAttributes); 
} 

private void W_ClearTap(object sender, TappedRoutedEventArgs e) 
{ 
    this.ink.InkPresenter.InputProcessingConfiguration.Mode = InkInputProcessingMode.Erasing; 
} 

參考圖像

Answer 1

對於UWP的應用程序，你可以使用InkStrokeContainer.Clear方法。例如：

ink.InkPresenter.StrokeContainer.Clear();