InkCanvas

说明：本例简单展示了InkCanvas的使用，并详细列出了InkCanvasEditingMode的枚举值。

 <Grid>
    <InkCanvas Name="inkCanvas" Background="Ivory">
      <InkCanvas.DefaultDrawingAttributes>
        <Ink:DrawingAttributes xmlns:ink="system-windows-ink" Color="Red" Width="5" />
      </InkCanvas.DefaultDrawingAttributes>
    </InkCanvas>

    <!-- This stack panel of buttons is a sibling to InkCanvas (not a child) but overlapping it, 
         higher in z-order, so that ink is collected and rendered behind -->
    <StackPanel Name="buttonBar" VerticalAlignment="Top" Height="26" Orientation="Horizontal" Margin="5">
      <Button Click="Ink">Ink</Button>
      <Button Click="Highlight">Highlight</Button>
      <Button Click="EraseStroke">EraseStroke</Button>
      <Button Click="Select">Select</Button>
    </StackPanel>
  </Grid>

 1  // Set the EditingMode to ink input.
 2         private void Ink(object sender, RoutedEventArgs e)
 3         {
 4             //InkCanvas.EditingMode,获取或设置活动指针设备使用的用户编辑模式。这是一个依赖项属性。
 5 
 6             inkCanvas.EditingMode = InkCanvasEditingMode.Ink;
 7 
 8             // Set the DefaultDrawingAttributes for a red pen.
 9             inkCanvas.DefaultDrawingAttributes.Color = Colors.Red;
10             inkCanvas.DefaultDrawingAttributes.IsHighlighter = false;
11             inkCanvas.DefaultDrawingAttributes.Height = 2;
12         }
13 
14         // Set the EditingMode to highlighter input.
15         private void Highlight(object sender, RoutedEventArgs e)
16         {
17             inkCanvas.EditingMode = InkCanvasEditingMode.Ink;
18 
19             // Set the DefaultDrawingAttributes for a highlighter pen.
20             inkCanvas.DefaultDrawingAttributes.Color = Colors.Yellow;
21             inkCanvas.DefaultDrawingAttributes.IsHighlighter = true;
22             inkCanvas.DefaultDrawingAttributes.Height = 25;
23         }
24 
25         // Set the EditingMode to erase by stroke.
26         private void EraseStroke(object sender, RoutedEventArgs e)
27         {
28             inkCanvas.EditingMode = InkCanvasEditingMode.EraseByStroke;
29         }
30 
31         // Set the EditingMode to selection.
32         private void Select(object sender, RoutedEventArgs e)
33         {
34 
35             inkCanvas.EditingMode = InkCanvasEditingMode.Select;
36         }
37 
38         #region InkCanvasEditingMode的枚举值
39 
40         //     指示当笔向 System.Windows.Controls.InkCanvas 发送数据时不执行任何操作。
41 //None = 0,
42 
43 
44 // 指示当笔向 System.Windows.Controls.InkCanvas 发送数据时，在其上显示墨迹。
45 //Ink = 1,
46 
47 //     指示 System.Windows.Controls.InkCanvas 对笔势做出响应，但不接收墨迹。
48 // GestureOnly = 2,
49 
50 //     指示 System.Windows.Controls.InkCanvas 对笔势做出响应并接收墨迹。
51 // InkAndGesture = 3,
52 
53 //     指示笔在 System.Windows.Controls.InkCanvas 上选择笔画和元素。
54 //Select = 4,
55 
56 //     指示当笔和笔画相交时将擦除部分笔画。
57 //EraseByPoint = 5,
58 
59 //     指示当笔和笔画相交时将擦除整个笔画。
60 //EraseByStroke = 6,
61         #endregion