DynamicRenderer.Reset(StylusDevice, StylusPointCollection) 方法

定义

命名空间:
System.Windows.Input.StylusPlugIns
程序集:
PresentationCore.dll

清除当前笔划的呈现并重新绘制它。

public:
 virtual void Reset(System::Windows::Input::StylusDevice ^ stylusDevice, System::Windows::Input::StylusPointCollection ^ stylusPoints);
public virtual void Reset(System.Windows.Input.StylusDevice stylusDevice, System.Windows.Input.StylusPointCollection stylusPoints);
abstract member Reset : System.Windows.Input.StylusDevice * System.Windows.Input.StylusPointCollection -> unit
override this.Reset : System.Windows.Input.StylusDevice * System.Windows.Input.StylusPointCollection -> unit
Public Overridable Sub Reset (stylusDevice As StylusDevice, stylusPoints As StylusPointCollection)

参数

stylusDevice
StylusDevice

当前触笔设备。

stylusPoints
StylusPointCollection

触笔指向要重绘。

例外

ArgumentException

触笔和鼠标都不处于向下状态。

示例

以下示例在绘制当前笔划时更改其颜色。

bool selectionMode = false;

public void ToggleSelect()
{
    StylusDevice currentStylus = Stylus.CurrentStylusDevice;

    // Check if the stylus is down or the mouse is pressed.
    if (Mouse.LeftButton != MouseButtonState.Pressed &&
        (currentStylus == null || currentStylus.InAir))
    {
        return;
    }
    
    selectionMode = !selectionMode;

    // If the control is in selection mode, change the color of 
    // the current stroke dark gray.
    if (selectionMode)
    {
        dynamicRenderer1.DrawingAttributes.Color = Colors.DarkGray;
    }
    else
    {
        dynamicRenderer1.DrawingAttributes.Color = Colors.Purple;
    }

    dynamicRenderer1.Reset(currentStylus, stylusPoints);
}

Private selectionMode As Boolean = False


Public Sub ToggleSelect() 
    Dim currentStylus As StylusDevice = Stylus.CurrentStylusDevice
    
    ' Check if the stylus is down or the mouse is pressed.
    If Mouse.LeftButton <> MouseButtonState.Pressed AndAlso _
      (currentStylus Is Nothing OrElse currentStylus.InAir) Then
        Return
    End If
    
    selectionMode = Not selectionMode
    
    ' If the control is in selection mode, change the color of 
    ' the current stroke dark gray.
    If selectionMode Then
        dynamicRenderer1.DrawingAttributes.Color = Colors.DarkGray
    
    Else
        dynamicRenderer1.DrawingAttributes.Color = Colors.Purple
    End If 
    
    dynamicRenderer1.Reset(currentStylus, stylusPoints)

End Sub

注解

重 DynamicRenderer 绘当前笔划和传入 Reset 方法的任何触笔点。 此方法允许在用户仍在创建笔划时重新绘制笔划。 在调用时，平板电脑笔必须触摸数字化器，或者必须按下 Reset 鼠标左键。

继承者说明

在派生类中重写 Reset(StylusDevice, StylusPointCollection) 时，请务必调用基类 Reset(StylusDevice, StylusPointCollection) 的方法。

适用于