語言

DynamicRenderer.Reset(StylusDevice, StylusPointCollection) 方法

定義

命名空間:
System.Windows.Input.StylusPlugIns
組件:
PresentationCore.dll

清除當前筆劃的渲染並重新繪製。

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)

參數

stylusDevice
StylusDevice

目前的觸控筆裝置。

stylusPoints
StylusPointCollection

觸控筆指向要重新繪製。

例外狀況

ArgumentException

觸控筆和滑鼠都沒有處於下墜狀態。

範例

以下範例在繪製時會改變當前筆劃的顏色。

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

備註

它 DynamicRenderer 會重新繪製當前筆劃以及任何輸入 Reset 方法的觸控筆點。 這種方法允許你在使用者仍在創作筆劃時重新繪製筆劃。 繪圖板筆必須觸碰數位筆，或在呼叫時 Reset 按下左鍵。

給繼承者的注意事項

在導出類別中覆 Reset(StylusDevice, StylusPointCollection) 寫時，務必呼叫基底類別的方法 Reset(StylusDevice, StylusPointCollection) 。

適用於