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 v6.0.0

包:: System.Drawing.Common v7.0.0

包:: System.Drawing.Common v8.0.0

包:: System.Drawing.Common v9.0.0-preview.2.24128.3

重要

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将此 Graphics 的剪辑区域更新为当前剪辑区域与指定 Rectangle 结构的交集。

重载

IntersectClip(Rectangle)	将此 Graphics 的剪辑区域更新为当前剪辑区域与指定 Rectangle 结构的交集。
IntersectClip(RectangleF)	将此 Graphics 的剪辑区域更新为当前剪辑区域与指定 RectangleF 结构的交集。
IntersectClip(Region)	将此 Graphics 对象的剪辑区域更新为当前剪辑区域与指定 Region 的交集。

IntersectClip(Rectangle)

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

将此 Graphics 的剪辑区域更新为当前剪辑区域与指定 Rectangle 结构的交集。

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

与当前剪辑区域相交的 Rectangle 结构。

示例

下面的代码示例旨在与 Windows 窗体一起使用，它需要 PaintEventArgse，这是事件处理程序的参数Paint。此代码执行以下操作：

创建左上角为 (0， 0) 的矩形，并将剪切区域设置为此矩形。
创建左上角位于 (100， 100) 的第二个矩形，并将剪裁区域设置为此矩形的交集，并将当前剪裁区域 (第一个矩形) 。
使用纯蓝色画笔填充包含前两个矩形的大矩形。
将剪辑区域重置为无限。
围绕两个剪裁区域绘制矩形。它为第一个剪裁矩形使用黑色笔，对第二个剪裁区域使用红色笔。

结果是只有两个矩形的交集用蓝色填充。

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

此方法将当前剪辑区域与参数指定的rect矩形的交集表示的区域分配给Clip此Graphics属性。

适用于

IntersectClip(RectangleF)

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

将此 Graphics 的剪辑区域更新为当前剪辑区域与指定 RectangleF 结构的交集。

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

与当前剪辑区域相交的 RectangleF 结构。

示例

下面的代码示例旨在与 Windows 窗体一起使用，它需要 PaintEventArgse，这是事件处理程序的参数Paint。此代码执行以下操作：

创建左上角为 (0， 0) 的矩形，并将剪切区域设置为此矩形。
创建左上角位于 (100， 100) 的第二个矩形，并将剪裁区域设置为此矩形的交集，并将当前剪裁区域 (第一个矩形) 。
使用纯蓝色画笔填充包含前两个矩形的大矩形。
将剪辑区域重置为无限。
围绕两个剪裁区域绘制矩形。它为第一个剪裁矩形使用黑色笔，对第二个剪裁区域使用红色笔。

结果是只有两个矩形的交集用蓝色填充。

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

此方法将当前剪辑区域与参数指定的rect矩形的交集表示的区域分配给Clip此Graphics属性。

适用于

IntersectClip(Region)

Source:: Graphics.cs

Source:: Graphics.cs

Source:: Graphics.cs

将此 Graphics 对象的剪辑区域更新为当前剪辑区域与指定 Region 的交集。

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

要与当前区域交叉的 Region。

示例

下面的代码示例旨在与 Windows 窗体一起使用，它需要 PaintEventArgse，这是事件处理程序的参数Paint。此代码执行以下操作：

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，并将剪切区域设置为该区域。
创建第二个矩形，左上角为 (100， 100) 。
创建一个区域并将其设置为第二个矩形，并将剪切区域设置为此区域与当前剪切区域的交集， (第一个矩形) 使用组合模式 Replace。
用纯蓝色画笔填充一个大矩形，该矩形包含前面的两个区域。
将剪辑区域重置为无限。
围绕两个剪裁区域绘制矩形。它将黑色笔用于第一个剪裁区域，对第二个剪裁区域使用红色笔。

结果是只有两个区域的交集填充蓝色。

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

此方法将当前剪辑区域与参数指定的region区域的交集表示的区域分配给Clip此Graphics属性。

适用于

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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

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