Graphics.SetClip 方法

定义

命名空间:: System.Drawing

程序集:: System.Drawing.Common.dll

程序集:: System.Drawing.dll

包:: System.Drawing.Common v11.0.0-preview.5.26302.115

重要

一些信息与预发行产品相关，相应产品在发行之前可能会进行重大修改。对于此处提供的信息，Microsoft 不作任何明示或暗示的担保。

将此 Graphics 区域的剪辑区域设置为 Clip 指定的 Graphics属性。

重载

名称	说明
SetClip(Region, CombineMode)	将此 Graphics 区域的剪辑区域设置为组合当前剪辑区域和指定 Region操作的结果。
SetClip(RectangleF, CombineMode)	将此 Graphics 区域的剪辑区域设置为将当前剪辑区域与结构指定的矩形组合在一 RectangleF 起的指定操作的结果。
SetClip(Rectangle, CombineMode)	将此 Graphics 区域的剪辑区域设置为将当前剪辑区域与结构指定的矩形组合在一 Rectangle 起的指定操作的结果。
SetClip(Graphics, CombineMode)	将此 Graphics 区域的剪辑区域设置为当前剪辑区域的指定组合操作和 Clip 指定 Graphics属性的结果。
SetClip(GraphicsPath, CombineMode)	将此 Graphics 区域的剪辑区域设置为组合当前剪辑区域和指定 GraphicsPath操作的结果。
SetClip(RectangleF)	将此 Graphics 区域的剪辑区域设置为结构指定的 RectangleF 矩形。
SetClip(Rectangle)	将此 Graphics 区域的剪辑区域设置为结构指定的 Rectangle 矩形。
SetClip(Graphics)	将此 Graphics 区域的剪辑区域设置为 `Clip` 指定的 Graphics属性。
SetClip(GraphicsPath)	将此 Graphics 区域的剪辑区域设置为指定的 GraphicsPath。

SetClip(Region, CombineMode)

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

将此 Graphics 区域的剪辑区域设置为组合当前剪辑区域和指定 Region操作的结果。

public:
 void SetClip(System::Drawing::Region ^ region, System::Drawing::Drawing2D::CombineMode combineMode);

public void SetClip(System.Drawing.Region region, System.Drawing.Drawing2D.CombineMode combineMode);

member this.SetClip : System.Drawing.Region * System.Drawing.Drawing2D.CombineMode -> unit

Public Sub SetClip (region As Region, combineMode As CombineMode)

参数

region: Region

Region 要合并。

combineMode: CombineMode

枚举中的 CombineMode 成员，指定要使用的组合操作。

示例

下面的代码示例设计用于 Windows 窗体，它需要 PaintEventArgse，这是 Paint 事件处理程序的参数。该示例执行以下操作：

为剪辑区域创建一个小矩形。
将剪辑区域设置为具有成员的 Replace 矩形。
用纯黑色画笔填充大矩形。

结果是一个小型、填充的黑色矩形。

public:
   void SetClipRegionCombine( PaintEventArgs^ e )
   {
      // Create region for clipping.
      System::Drawing::Region^ clipRegion = gcnew System::Drawing::Region( Rectangle(0,0,100,100) );

      // Set clipping region of graphics to region.
      e->Graphics->SetClip( clipRegion, CombineMode::Replace );

      // Fill rectangle to demonstrate clip region.
      e->Graphics->FillRectangle( gcnew SolidBrush( Color::Black ), 0, 0, 500, 300 );
   }

private void SetClipRegionCombine(PaintEventArgs e)
{

    // Create region for clipping.
    Region clipRegion = new Region(new Rectangle(0, 0, 100, 100));

    // Set clipping region of graphics to region.
    e.Graphics.SetClip(clipRegion, CombineMode.Replace);

    // Fill rectangle to demonstrate clip region.
    e.Graphics.FillRectangle(new SolidBrush(Color.Black), 0, 0, 500, 300);
}

Private Sub SetClipRegionCombine(ByVal e As PaintEventArgs)

    ' Create region for clipping.
    Dim clipRegion As New [Region](New Rectangle(0, 0, 100, 100))

    ' Set clipping region of graphics to region.
    e.Graphics.SetClip(clipRegion, CombineMode.Replace)

    ' Fill rectangle to demonstrate clip region.
    e.Graphics.FillRectangle(New SolidBrush(Color.Black), 0, 0, _
    500, 300)
End Sub

适用于

SetClip(RectangleF, CombineMode)

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

将此 Graphics 区域的剪辑区域设置为将当前剪辑区域与结构指定的矩形组合在一 RectangleF 起的指定操作的结果。

public:
 void SetClip(System::Drawing::RectangleF rect, System::Drawing::Drawing2D::CombineMode combineMode);

public void SetClip(System.Drawing.RectangleF rect, System.Drawing.Drawing2D.CombineMode combineMode);

member this.SetClip : System.Drawing.RectangleF * System.Drawing.Drawing2D.CombineMode -> unit

Public Sub SetClip (rect As RectangleF, combineMode As CombineMode)

参数

rect: RectangleF

RectangleF 要组合的结构。

combineMode: CombineMode

CombineMode指定要使用的组合操作的枚举的成员。

示例

下面的代码示例设计用于 Windows 窗体，它需要 PaintEventArgse，这是 Paint 事件处理程序的参数。该示例执行以下操作：

为剪辑区域创建一个小矩形。
将剪辑区域设置为具有成员的 Replace 矩形。
用纯黑色画笔填充大矩形。

结果是一个小型、填充的黑色矩形。

public:
   void SetClipRectangleFCombine( PaintEventArgs^ e )
   {
      // Create rectangle for clipping region.
      RectangleF clipRect = RectangleF(0.0F,0.0F,100.0F,100.0F);

      // Set clipping region of graphics to rectangle.
      e->Graphics->SetClip( clipRect, CombineMode::Replace );

      // Fill rectangle to demonstrate clip region.
      e->Graphics->FillRectangle( gcnew SolidBrush( Color::Black ), 0, 0, 500, 300 );
   }

private void SetClipRectangleFCombine(PaintEventArgs e)
{

    // Create rectangle for clipping region.
    RectangleF clipRect = new RectangleF(0.0F, 0.0F, 100.0F, 100.0F);

    // Set clipping region of graphics to rectangle.
    e.Graphics.SetClip(clipRect, CombineMode.Replace);

    // Fill rectangle to demonstrate clip region.
    e.Graphics.FillRectangle(new SolidBrush(Color.Black), 0, 0, 500, 300);
}

Private Sub SetClipRectangleFCombine(ByVal e As PaintEventArgs)

    ' Create rectangle for clipping region.
    Dim clipRect As New RectangleF(0.0F, 0.0F, 100.0F, 100.0F)

    ' Set clipping region of graphics to rectangle.
    e.Graphics.SetClip(clipRect, CombineMode.Replace)

    ' Fill rectangle to demonstrate clip region.
    e.Graphics.FillRectangle(New SolidBrush(Color.Black), 0, 0, _
    500, 300)
End Sub

适用于

SetClip(Rectangle, CombineMode)

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

将此 Graphics 区域的剪辑区域设置为将当前剪辑区域与结构指定的矩形组合在一 Rectangle 起的指定操作的结果。

public:
 void SetClip(System::Drawing::Rectangle rect, System::Drawing::Drawing2D::CombineMode combineMode);

public void SetClip(System.Drawing.Rectangle rect, System.Drawing.Drawing2D.CombineMode combineMode);

member this.SetClip : System.Drawing.Rectangle * System.Drawing.Drawing2D.CombineMode -> unit

Public Sub SetClip (rect As Rectangle, combineMode As CombineMode)

参数

rect: Rectangle

Rectangle 要组合的结构。

combineMode: CombineMode

CombineMode指定要使用的组合操作的枚举的成员。

示例

下面的代码示例设计用于 Windows 窗体，它需要 PaintEventArgse，这是 Paint 事件处理程序的参数。该示例执行以下操作：

为剪辑区域创建一个小矩形。
将剪辑区域设置为具有成员的 Replace 矩形。
用纯黑色画笔填充大矩形。

结果是一个小型、填充的黑色矩形。

public:
   void SetClipRectangleCombine( PaintEventArgs^ e )
   {
      // Create rectangle for clipping region.
      Rectangle clipRect = Rectangle(0,0,100,100);

      // Set clipping region of graphics to rectangle.
      e->Graphics->SetClip( clipRect, CombineMode::Replace );

      // Fill rectangle to demonstrate clip region.
      e->Graphics->FillRectangle( gcnew SolidBrush( Color::Black ), 0, 0, 500, 300 );
   }

private void SetClipRectangleCombine(PaintEventArgs e)
{

    // Create rectangle for clipping region.
    Rectangle clipRect = new Rectangle(0, 0, 100, 100);

    // Set clipping region of graphics to rectangle.
    e.Graphics.SetClip(clipRect, CombineMode.Replace);

    // Fill rectangle to demonstrate clip region.
    e.Graphics.FillRectangle(new SolidBrush(Color.Black), 0, 0, 500, 300);
}

Private Sub SetClipRectangleCombine(ByVal e As PaintEventArgs)

    ' Create rectangle for clipping region.
    Dim clipRect As New Rectangle(0, 0, 100, 100)

    ' Set clipping region of graphics to rectangle.
    e.Graphics.SetClip(clipRect, CombineMode.Replace)

    ' Fill rectangle to demonstrate clip region.
    e.Graphics.FillRectangle(New SolidBrush(Color.Black), 0, 0, _
    500, 300)
End Sub

适用于

SetClip(Graphics, CombineMode)

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

将此 Graphics 区域的剪辑区域设置为当前剪辑区域的指定组合操作和 Clip 指定 Graphics属性的结果。

public:
 void SetClip(System::Drawing::Graphics ^ g, System::Drawing::Drawing2D::CombineMode combineMode);

public void SetClip(System.Drawing.Graphics g, System.Drawing.Drawing2D.CombineMode combineMode);

member this.SetClip : System.Drawing.Graphics * System.Drawing.Drawing2D.CombineMode -> unit

Public Sub SetClip (g As Graphics, combineMode As CombineMode)

参数

g: Graphics

Graphics ，指定要组合的剪辑区域。

combineMode: CombineMode

CombineMode指定要使用的组合操作的枚举的成员。

示例

下面的代码示例设计用于 Windows 窗体，它需要 PaintEventArgse，这是 Paint 事件处理程序的参数，以及thisForm，Form。该示例执行以下操作：

从GraphicsthisForm示例创建一个临时值Form。
将临时 Graphics 的剪裁区域设置为一个小正方形。
使用成员将窗体图形对象的剪辑区域更新为新Graphics Replace对象的剪辑区域。
用纯黑色画笔填充大矩形。

结果是一个小的，填充的，黑色的正方形。

public:
   void SetClipGraphicsCombine( PaintEventArgs^ e )
   {
      // Create temporary graphics object and set its clipping region.
      Graphics^ newGraphics = this->CreateGraphics();
      newGraphics->SetClip( Rectangle(0,0,100,100) );

      // Update clipping region of graphics to clipping region of new
      // graphics.
      e->Graphics->SetClip( newGraphics, CombineMode::Replace );

      // Fill rectangle to demonstrate clip region.
      e->Graphics->FillRectangle( gcnew SolidBrush( Color::Black ), 0, 0, 500, 300 );

      // Release new graphics.
      delete newGraphics;
   }

private void SetClipGraphicsCombine(PaintEventArgs e)
{

    // Create temporary graphics object and set its clipping region.
    Graphics newGraphics = this.CreateGraphics();
    newGraphics.SetClip(new Rectangle(0, 0, 100, 100));

    // Update clipping region of graphics to clipping region of new

    // graphics.
    e.Graphics.SetClip(newGraphics, CombineMode.Replace);

    // Fill rectangle to demonstrate clip region.
    e.Graphics.FillRectangle(new SolidBrush(Color.Black), 0, 0, 500, 300);

    // Release new graphics.
    newGraphics.Dispose();
}

Private Sub SetClipGraphicsCombine(ByVal e As PaintEventArgs)

    ' Create temporary graphics object and set its clipping region.
    Dim newGraphics As Graphics = Me.CreateGraphics()
    newGraphics.SetClip(New Rectangle(0, 0, 100, 100))

    ' Update clipping region of graphics to clipping region of new

    ' graphics.
    e.Graphics.SetClip(newGraphics, CombineMode.Replace)

    ' Fill rectangle to demonstrate clip region.
    e.Graphics.FillRectangle(New SolidBrush(Color.Black), 0, 0, _
    500, 300)

    ' Release new graphics.
    newGraphics.Dispose()
End Sub

适用于

SetClip(GraphicsPath, CombineMode)

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

将此 Graphics 区域的剪辑区域设置为组合当前剪辑区域和指定 GraphicsPath操作的结果。

public:
 void SetClip(System::Drawing::Drawing2D::GraphicsPath ^ path, System::Drawing::Drawing2D::CombineMode combineMode);

public void SetClip(System.Drawing.Drawing2D.GraphicsPath path, System.Drawing.Drawing2D.CombineMode combineMode);

member this.SetClip : System.Drawing.Drawing2D.GraphicsPath * System.Drawing.Drawing2D.CombineMode -> unit

Public Sub SetClip (path As GraphicsPath, combineMode As CombineMode)

参数

path: GraphicsPath

GraphicsPath 要合并。

combineMode: CombineMode

CombineMode指定要使用的组合操作的枚举的成员。

示例

下面的代码示例设计用于 Windows 窗体，它需要 PaintEventArgse，这是 Paint 事件处理程序的参数。该示例执行以下操作：

创建图形路径，并将省略号添加到路径。
使用成员将剪辑区域设置为椭圆路径 Replace 。
用纯黑色画笔填充大矩形。

结果是一个填充的黑色椭圆。

public:
   void SetClipPathCombine( PaintEventArgs^ e )
   {
      // Create graphics path.
      GraphicsPath^ clipPath = gcnew GraphicsPath;
      clipPath->AddEllipse( 0, 0, 200, 100 );

      // Set clipping region to path.
      e->Graphics->SetClip( clipPath, CombineMode::Replace );

      // Fill rectangle to demonstrate clipping region.
      e->Graphics->FillRectangle( gcnew SolidBrush( Color::Black ), 0, 0, 500, 300 );
   }

private void SetClipPathCombine(PaintEventArgs e)
{

    // Create graphics path.
    GraphicsPath clipPath = new GraphicsPath();
    clipPath.AddEllipse(0, 0, 200, 100);

    // Set clipping region to path.
    e.Graphics.SetClip(clipPath, CombineMode.Replace);

    // Fill rectangle to demonstrate clipping region.
    e.Graphics.FillRectangle(new SolidBrush(Color.Black), 0, 0, 500, 300);
}

Private Sub SetClipPathCombine(ByVal e As PaintEventArgs)

    ' Create graphics path.
    Dim clipPath As New GraphicsPath
    clipPath.AddEllipse(0, 0, 200, 100)

    ' Set clipping region to path.
    e.Graphics.SetClip(clipPath, CombineMode.Replace)

    ' Fill rectangle to demonstrate clipping region.
    e.Graphics.FillRectangle(New SolidBrush(Color.Black), 0, 0, _
    500, 300)
End Sub

注解

如果参数表示 path 的图形路径未关闭，则从最后一个点添加到第一个点以关闭路径的其他段。

适用于

SetClip(RectangleF)

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

将此 Graphics 区域的剪辑区域设置为结构指定的 RectangleF 矩形。

public:
 void SetClip(System::Drawing::RectangleF rect);

public void SetClip(System.Drawing.RectangleF rect);

member this.SetClip : System.Drawing.RectangleF -> unit

Public Sub SetClip (rect As RectangleF)

参数

rect: RectangleF

RectangleF 表示新剪辑区域的结构。

示例

下面的代码示例设计用于 Windows 窗体，它需要 PaintEventArgse，这是 Paint 事件处理程序的参数。该示例执行以下操作：

为剪辑区域创建一个小矩形。
将剪辑区域设置为矩形。
用纯黑色画笔填充大矩形。

结果是一个小型、填充的黑色矩形。

public:
   void SetClipRectangleF( PaintEventArgs^ e )
   {
      // Create rectangle for clipping region.
      RectangleF clipRect = RectangleF(0.0F,0.0F,100.0F,100.0F);

      // Set clipping region of graphics to rectangle.
      e->Graphics->SetClip( clipRect );

      // Fill rectangle to demonstrate clip region.
      e->Graphics->FillRectangle( gcnew SolidBrush( Color::Black ), 0, 0, 500, 300 );
   }

private void SetClipRectangleF(PaintEventArgs e)
{

    // Create rectangle for clipping region.
    RectangleF clipRect = new RectangleF(0.0F, 0.0F, 100.0F, 100.0F);

    // Set clipping region of graphics to rectangle.
    e.Graphics.SetClip(clipRect);

    // Fill rectangle to demonstrate clip region.
    e.Graphics.FillRectangle(new SolidBrush(Color.Black), 0, 0, 500, 300);
}

Private Sub SetClipRectangleF(ByVal e As PaintEventArgs)

    ' Create rectangle for clipping region.
    Dim clipRect As New RectangleF(0.0F, 0.0F, 100.0F, 100.0F)

    ' Set clipping region of graphics to rectangle.
    e.Graphics.SetClip(clipRect)

    ' Fill rectangle to demonstrate clip region.
    e.Graphics.FillRectangle(New SolidBrush(Color.Black), 0, 0, _
    500, 300)
End Sub

适用于

SetClip(Rectangle)

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

将此 Graphics 区域的剪辑区域设置为结构指定的 Rectangle 矩形。

public:
 void SetClip(System::Drawing::Rectangle rect);

public void SetClip(System.Drawing.Rectangle rect);

member this.SetClip : System.Drawing.Rectangle -> unit

Public Sub SetClip (rect As Rectangle)

参数

rect: Rectangle

Rectangle 表示新剪辑区域的结构。

示例

下面的代码示例设计用于 Windows 窗体，它需要 PaintEventArgse，这是 Paint 事件处理程序的参数。该示例执行以下操作：

为剪辑区域创建一个小矩形。
将剪辑区域设置为矩形。
用纯黑色画笔填充大矩形。

结果是一个小型、填充的黑色矩形。

public:
   void SetClipRectangle( PaintEventArgs^ e )
   {
      // Create rectangle for clipping region.
      Rectangle clipRect = Rectangle(0,0,100,100);

      // Set clipping region of graphics to rectangle.
      e->Graphics->SetClip( clipRect );

      // Fill rectangle to demonstrate clip region.
      e->Graphics->FillRectangle( gcnew SolidBrush( Color::Black ), 0, 0, 500, 300 );
   }

private void SetClipRectangle(PaintEventArgs e)
{

    // Create rectangle for clipping region.
    Rectangle clipRect = new Rectangle(0, 0, 100, 100);

    // Set clipping region of graphics to rectangle.
    e.Graphics.SetClip(clipRect);

    // Fill rectangle to demonstrate clip region.
    e.Graphics.FillRectangle(new SolidBrush(Color.Black), 0, 0, 500, 300);
}

Private Sub SetClipRectangle(ByVal e As PaintEventArgs)

    ' Create rectangle for clipping region.
    Dim clipRect As New Rectangle(0, 0, 100, 100)

    ' Set clipping region of graphics to rectangle.
    e.Graphics.SetClip(clipRect)

    ' Fill rectangle to demonstrate clip region.
    e.Graphics.FillRectangle(New SolidBrush(Color.Black), 0, 0, _
    500, 300)
End Sub

适用于

SetClip(Graphics)

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

将此 Graphics 区域的剪辑区域设置为 Clip 指定的 Graphics属性。

public:
 void SetClip(System::Drawing::Graphics ^ g);

public void SetClip(System.Drawing.Graphics g);

member this.SetClip : System.Drawing.Graphics -> unit

Public Sub SetClip (g As Graphics)

参数

g: Graphics

Graphics 从中获取新剪辑区域。

示例

下面的代码示例设计用于 Windows 窗体，它需要 PaintEventArgse，这是 Paint 事件处理程序的参数，以及thisForm，Form。该示例执行以下操作：

从GraphicsthisForm示例创建一个临时值Form。
将临时 Graphics 的剪裁区域设置为一个小正方形。
将窗体图形对象的剪辑区域更新为临时 Graphics图形对象的剪辑区域。
用纯黑色画笔填充大矩形。

结果是一个小的，填充的，黑色的正方形。

public:
   void SetClipGraphics( PaintEventArgs^ e )
   {
      // Create temporary graphics object and set its clipping region.
      Graphics^ newGraphics = this->CreateGraphics();
      newGraphics->SetClip( Rectangle(0,0,100,100) );

      // Update clipping region of graphics to clipping region of new
      // graphics.
      e->Graphics->SetClip( newGraphics );

      // Fill rectangle to demonstrate clip region.
      e->Graphics->FillRectangle( gcnew SolidBrush( Color::Black ), 0, 0, 500, 300 );

      // Release new graphics.
      delete newGraphics;
   }

private void SetClipGraphics(PaintEventArgs e)
{

    // Create temporary graphics object and set its clipping region.
    Graphics newGraphics = this.CreateGraphics();
    newGraphics.SetClip(new Rectangle(0, 0, 100, 100));

    // Update clipping region of graphics to clipping region of new

    // graphics.
    e.Graphics.SetClip(newGraphics);

    // Fill rectangle to demonstrate clip region.
    e.Graphics.FillRectangle(new SolidBrush(Color.Black), 0, 0, 500, 300);

    // Release new graphics.
    newGraphics.Dispose();
}

Private Sub SetClipGraphics(ByVal e As PaintEventArgs)

    ' Create temporary graphics object and set its clipping region.
    Dim newGraphics As Graphics = Me.CreateGraphics()
    newGraphics.SetClip(New Rectangle(0, 0, 100, 100))

    ' Update clipping region of graphics to clipping region of new

    ' graphics.
    e.Graphics.SetClip(newGraphics)

    ' Fill rectangle to demonstrate clip region.
    e.Graphics.FillRectangle(New SolidBrush(Color.Black), 0, 0, _
    500, 300)

    ' Release new graphics.
    newGraphics.Dispose()
End Sub

适用于

SetClip(GraphicsPath)

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

将此 Graphics 区域的剪辑区域设置为指定的 GraphicsPath。

public:
 void SetClip(System::Drawing::Drawing2D::GraphicsPath ^ path);

public void SetClip(System.Drawing.Drawing2D.GraphicsPath path);

member this.SetClip : System.Drawing.Drawing2D.GraphicsPath -> unit

Public Sub SetClip (path As GraphicsPath)

参数

path: GraphicsPath

GraphicsPath 表示新剪辑区域。

示例

下面的代码示例设计用于 Windows 窗体，它需要 PaintEventArgse，这是 Paint 事件处理程序的参数。该示例执行以下操作：

创建图形路径，并将省略号添加到路径。
将剪辑区域设置为椭圆路径。
用纯黑色画笔填充大矩形。

结果是一个填充的黑色椭圆。

public:
   void SetClipPath( PaintEventArgs^ e )
   {
      // Create graphics path.
      GraphicsPath^ clipPath = gcnew GraphicsPath;
      clipPath->AddEllipse( 0, 0, 200, 100 );

      // Set clipping region to path.
      e->Graphics->SetClip( clipPath );

      // Fill rectangle to demonstrate clipping region.
      e->Graphics->FillRectangle( gcnew SolidBrush( Color::Black ), 0, 0, 500, 300 );
   }

private void SetClipPath(PaintEventArgs e)
{

    // Create graphics path.
    GraphicsPath clipPath = new GraphicsPath();
    clipPath.AddEllipse(0, 0, 200, 100);

    // Set clipping region to path.
    e.Graphics.SetClip(clipPath);

    // Fill rectangle to demonstrate clipping region.
    e.Graphics.FillRectangle(new SolidBrush(Color.Black), 0, 0, 500, 300);
}

Private Sub SetClipPath(ByVal e As PaintEventArgs)

    ' Create graphics path.
    Dim clipPath As New GraphicsPath
    clipPath.AddEllipse(0, 0, 200, 100)

    ' Set clipping region to path.
    e.Graphics.SetClip(clipPath)

    ' Fill rectangle to demonstrate clipping region.
    e.Graphics.FillRectangle(New SolidBrush(Color.Black), 0, 0, _
    500, 300)
End Sub

注解

如果参数表示 path 的图形路径未关闭，则从最后一个点添加到第一个点以关闭路径的其他段。

适用于

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