Graphics.IntersectClip 方法

参考

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 v8.0.10

包:: System.Drawing.Common v9.0.0-rc.2.24474.1

重要

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将此 Graphics 的剪辑区域更新为当前剪辑区域的交集和指定的 Rectangle 结构。

重载

IntersectClip(Rectangle)	将此 Graphics 的剪辑区域更新为当前剪辑区域的交集和指定的 Rectangle 结构。
IntersectClip(RectangleF)	将此 Graphics 的剪辑区域更新为当前剪辑区域的交集和指定的 RectangleF 结构。
IntersectClip(Region)	将此 Graphics 的剪辑区域更新为当前剪辑区域的交集和指定的 Region。

IntersectClip(Rectangle)

Source:: Graphics.cs

Source:: Graphics.cs

将此 Graphics 的剪辑区域更新为当前剪辑区域的交集和指定的 Rectangle 结构。

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

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

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

Public Sub IntersectClip (rect As Rectangle)

参数

rect: Rectangle

Rectangle 结构与当前剪辑区域相交。

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。该代码执行以下操作：

创建左上角为（0， 0）的矩形，并将剪辑区域设置为此矩形。
创建一个左上角为（100， 100）的第二个矩形，并将剪辑区域设置为此矩形的交集和当前剪辑区域（第一个矩形）。
用纯蓝色画笔填充包含前两个矩形的大型矩形。
将剪辑区域重置为无限。
在两个剪裁区域周围绘制矩形。它为第一个剪裁矩形使用黑色笔，为第二个剪裁区域使用红色笔。

结果是，只有两个矩形的交集填充有蓝色。

public:
   void IntersectClipRectangle( PaintEventArgs^ e )
   {
      // Set clipping region.
      Rectangle clipRect = Rectangle(0,0,200,200);
      e->Graphics->SetClip( clipRect );

      // Update clipping region to intersection of
      // existing region with specified rectangle.
      Rectangle intersectRect = Rectangle(100,100,200,200);
      e->Graphics->IntersectClip( intersectRect );

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

      // Reset clipping region to infinite.
      e->Graphics->ResetClip();

      // Draw clipRect and intersectRect to screen.
      e->Graphics->DrawRectangle( gcnew Pen( Color::Black ), clipRect );
      e->Graphics->DrawRectangle( gcnew Pen( Color::Red ), intersectRect );
   }

private void IntersectClipRectangle(PaintEventArgs e)
{

    // Set clipping region.
    Rectangle clipRect = new Rectangle(0, 0, 200, 200);
    e.Graphics.SetClip(clipRect);

    // Update clipping region to intersection of

    // existing region with specified rectangle.
    Rectangle intersectRect = new Rectangle(100, 100, 200, 200);
    e.Graphics.IntersectClip(intersectRect);

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

    // Reset clipping region to infinite.
    e.Graphics.ResetClip();

    // Draw clipRect and intersectRect to screen.
    e.Graphics.DrawRectangle(new Pen(Color.Black), clipRect);
    e.Graphics.DrawRectangle(new Pen(Color.Red), intersectRect);
}

Private Sub IntersectClipRectangle(ByVal e As PaintEventArgs)

    ' Set clipping region.
    Dim clipRect As New Rectangle(0, 0, 200, 200)
    e.Graphics.SetClip(clipRect)

    ' Update clipping region to intersection of

    ' existing region with specified rectangle.
    Dim intersectRect As New Rectangle(100, 100, 200, 200)
    e.Graphics.IntersectClip(intersectRect)

    ' Fill rectangle to demonstrate effective clipping region.
    e.Graphics.FillRectangle(New SolidBrush(Color.Blue), 0, 0, _
    500, 500)

    ' Reset clipping region to infinite.
    e.Graphics.ResetClip()

    ' Draw clipRect and intersectRect to screen.
    e.Graphics.DrawRectangle(New Pen(Color.Black), clipRect)
    e.Graphics.DrawRectangle(New Pen(Color.Red), intersectRect)
End Sub

注解

此方法分配给此 Graphics 由当前剪辑区域的交集和由 rect 参数指定的矩形所表示的区域 Clip 属性。

适用于

IntersectClip(RectangleF)

Source:: Graphics.cs

Source:: Graphics.cs

将此 Graphics 的剪辑区域更新为当前剪辑区域的交集和指定的 RectangleF 结构。

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

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

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

Public Sub IntersectClip (rect As RectangleF)

参数

rect: RectangleF

RectangleF 结构与当前剪辑区域相交。

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。该代码执行以下操作：

创建左上角为（0， 0）的矩形，并将剪辑区域设置为此矩形。
创建一个左上角为（100， 100）的第二个矩形，并将剪辑区域设置为此矩形的交集和当前剪辑区域（第一个矩形）。
用纯蓝色画笔填充包含前两个矩形的大型矩形。
将剪辑区域重置为无限。
在两个剪裁区域周围绘制矩形。它为第一个剪裁矩形使用黑色笔，为第二个剪裁区域使用红色笔。

结果是，只有两个矩形的交集填充有蓝色。

public:
   void IntersectClipRectangleF1( PaintEventArgs^ e )
   {
      // Set clipping region.
      Rectangle clipRect = Rectangle(0,0,200,200);
      e->Graphics->SetClip( clipRect );

      // Update clipping region to intersection of
      // existing region with specified rectangle.
      RectangleF intersectRectF = RectangleF(100.0F,100.0F,200.0F,200.0F);
      e->Graphics->IntersectClip( intersectRectF );

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

      // Reset clipping region to infinite.
      e->Graphics->ResetClip();

      // Draw clipRect and intersectRect to screen.
      e->Graphics->DrawRectangle( gcnew Pen( Color::Black ), clipRect );
      e->Graphics->DrawRectangle( gcnew Pen( Color::Red ), Rectangle::Round( intersectRectF ) );
   }

private void IntersectClipRectangleF1(PaintEventArgs e)
{

    // Set clipping region.
    Rectangle clipRect = new Rectangle(0, 0, 200, 200);
    e.Graphics.SetClip(clipRect);

    // Update clipping region to intersection of

    // existing region with specified rectangle.
    RectangleF intersectRectF = new RectangleF(100.0F, 100.0F, 200.0F, 200.0F);
    e.Graphics.IntersectClip(intersectRectF);

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

    // Reset clipping region to infinite.
    e.Graphics.ResetClip();

    // Draw clipRect and intersectRect to screen.
    e.Graphics.DrawRectangle(new Pen(Color.Black), clipRect);
    e.Graphics.DrawRectangle(new Pen(Color.Red), Rectangle.Round(intersectRectF));
}

Private Sub IntersectClipRectangleF1(ByVal e As PaintEventArgs)

    ' Set clipping region.
    Dim clipRect As New Rectangle(0, 0, 200, 200)
    e.Graphics.SetClip(clipRect)

    ' Update clipping region to intersection of

    ' existing region with specified rectangle.
    Dim intersectRectF As New RectangleF(100.0F, 100.0F, 200.0F, 200.0F)
    e.Graphics.IntersectClip(intersectRectF)

    ' Fill rectangle to demonstrate effective clipping region.
    e.Graphics.FillRectangle(New SolidBrush(Color.Blue), 0, 0, _
    500, 500)

    ' Reset clipping region to infinite.
    e.Graphics.ResetClip()

    ' Draw clipRect and intersectRect to screen.
    e.Graphics.DrawRectangle(New Pen(Color.Black), clipRect)
    e.Graphics.DrawRectangle(New Pen(Color.Red), _
    Rectangle.Round(intersectRectF))
End Sub

注解

此方法分配给此 Graphics 由当前剪辑区域的交集和由 rect 参数指定的矩形所表示的区域 Clip 属性。

适用于

IntersectClip(Region)

Source:: Graphics.cs

Source:: Graphics.cs

将此 Graphics 的剪辑区域更新为当前剪辑区域的交集和指定的 Region。

public:
 void IntersectClip(System::Drawing::Region ^ region);

public void IntersectClip (System.Drawing.Region region);

member this.IntersectClip : System.Drawing.Region -> unit

Public Sub IntersectClip (region As Region)

参数

region: Region

Region 与当前区域相交。

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。该代码执行以下操作：

创建左上角为（0， 0）的矩形。
创建一个区域并将其设置为矩形，并将剪辑区域设置为该区域。
创建左上角为（100， 100）的第二个矩形。
创建一个区域并将其设置为第二个矩形，并使用组合 Replace模式将剪辑区域设置为该区域的交集和当前剪辑区域（第一个矩形）。
用纯蓝色画笔填充包含上述两个区域的大型矩形。
将剪辑区域重置为无限。
在两个剪裁区域周围绘制矩形。它为第一个剪辑区域使用黑色笔，第二个剪辑区域使用红色笔。

结果是，只有两个区域的交集填充有蓝色。

public:
   void IntersectClipRegion( PaintEventArgs^ e )
   {
      // Set clipping region.
      Rectangle clipRect = Rectangle(0,0,200,200);
      System::Drawing::Region^ clipRegion = gcnew System::Drawing::Region( clipRect );
      e->Graphics->SetClip( clipRegion, CombineMode::Replace );

      // Update clipping region to intersection of
      // existing region with specified rectangle.
      Rectangle intersectRect = Rectangle(100,100,200,200);
      System::Drawing::Region^ intersectRegion = gcnew System::Drawing::Region( intersectRect );
      e->Graphics->IntersectClip( intersectRegion );

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

      // Reset clipping region to infinite.
      e->Graphics->ResetClip();

      // Draw clipRect and intersectRect to screen.
      e->Graphics->DrawRectangle( gcnew Pen( Color::Black ), clipRect );
      e->Graphics->DrawRectangle( gcnew Pen( Color::Red ), intersectRect );
   }

private void IntersectClipRegion(PaintEventArgs e)
{

    // Set clipping region.
    Rectangle clipRect = new Rectangle(0, 0, 200, 200);
    Region clipRegion = new Region(clipRect);
    e.Graphics.SetClip(clipRegion, CombineMode.Replace);

    // Update clipping region to intersection of

    // existing region with specified rectangle.
    Rectangle intersectRect = new Rectangle(100, 100, 200, 200);
    Region intersectRegion = new Region(intersectRect);
    e.Graphics.IntersectClip(intersectRegion);

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

    // Reset clipping region to infinite.
    e.Graphics.ResetClip();

    // Draw clipRect and intersectRect to screen.
    e.Graphics.DrawRectangle(new Pen(Color.Black), clipRect);
    e.Graphics.DrawRectangle(new Pen(Color.Red), intersectRect);
}

Private Sub IntersectClipRegion(ByVal e As PaintEventArgs)

    ' Set clipping region.
    Dim clipRect As New Rectangle(0, 0, 200, 200)
    Dim clipRegion As New [Region](clipRect)
    e.Graphics.SetClip(clipRegion, CombineMode.Replace)

    ' Update clipping region to intersection of

    ' existing region with specified rectangle.
    Dim intersectRect As New Rectangle(100, 100, 200, 200)
    Dim intersectRegion As New [Region](intersectRect)
    e.Graphics.IntersectClip(intersectRegion)

    ' Fill rectangle to demonstrate effective clipping region.
    e.Graphics.FillRectangle(New SolidBrush(Color.Blue), 0, 0, _
    500, 500)

    ' Reset clipping region to infinite.
    e.Graphics.ResetClip()

    ' Draw clipRect and intersectRect to screen.
    e.Graphics.DrawRectangle(New Pen(Color.Black), clipRect)
    e.Graphics.DrawRectangle(New Pen(Color.Red), intersectRect)
End Sub

注解

此方法分配给此 Graphics 当前剪辑区域的交集和由 region 参数指定的区域 Clip 属性。

适用于

通过

Graphics.IntersectClip 方法

定义

重载

IntersectClip(Rectangle)

参数

示例

注解

适用于

IntersectClip(RectangleF)

参数

示例

注解

适用于

IntersectClip(Region)

参数

示例

注解

适用于

其他资源