Region.Complement 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 v8.0.7

包:: System.Drawing.Common v9.0.0-preview.6.24327.6

重要

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将此 Region 更新为与此 Region不相交的指定 RectangleF 结构部分。

重载

Complement(Region)	更新此 Region 以包含未与此 Region相交的指定 Region 部分。
Complement(RectangleF)	更新此 Region 以包含与此 Region不相交的指定 RectangleF 结构部分。
Complement(GraphicsPath)	更新此 Region 以包含未与此 Region相交的指定 GraphicsPath 部分。
Complement(Rectangle)	更新此 Region 以包含与此 Region不相交的指定 Rectangle 结构部分。

Complement(Region)

Source:: Region.cs

Source:: Region.cs

Source:: Region.cs

Source:: Region.cs

Source:: Region.cs

更新此 Region 以包含未与此 Region相交的指定 Region 部分。

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

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

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

Public Sub Complement (region As Region)

参数

region: Region

要补充此 Region 对象的 Region 对象。

例外

ArgumentNullException

region null。

示例

下面的示例设计用于 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：

创建一个矩形并将其绘制到黑色屏幕
创建第二个矩形，该矩形与第一个矩形相交，并用红色将其绘制到屏幕。
使用第一个矩形创建一个区域，并使用第二个矩形创建第二个区域。
获取与第二个区域结合使用时第一个区域的补充。
用蓝色填充补全区域，并将其绘制到屏幕。

请注意，第二个区域不与第一个区域相交的区域的颜色为蓝色。

public:
   void Complement_Region_Example( PaintEventArgs^ e )
   {
      // Create the first rectangle and draw it to the screen in black.
      Rectangle regionRect = Rectangle(20,20,100,100);
      e->Graphics->DrawRectangle( Pens::Black, regionRect );

      // Create the second rectangle and draw it to the screen in red.
      Rectangle complementRect = Rectangle(90,30,100,100);
      e->Graphics->DrawRectangle( Pens::Red, complementRect );

      // Create a region from the first rectangle.
      System::Drawing::Region^ myRegion = gcnew System::Drawing::Region( regionRect );

      // Create a complement region.
      System::Drawing::Region^ complementRegion = gcnew System::Drawing::Region( complementRect );

      // Get the complement of myRegion when combined with
      // complementRegion.
      myRegion->Complement( complementRegion );

      // Fill the complement area with blue.
      SolidBrush^ myBrush = gcnew SolidBrush( Color::Blue );
      e->Graphics->FillRegion( myBrush, myRegion );
   }

public void Complement_Region_Example(PaintEventArgs e)
{
             
    // Create the first rectangle and draw it to the screen in black.
    Rectangle regionRect = new Rectangle(20, 20, 100, 100);
    e.Graphics.DrawRectangle(Pens.Black, regionRect);
             
    // Create the second rectangle and draw it to the screen in red.
    Rectangle complementRect = new Rectangle(90, 30, 100, 100);
    e.Graphics.DrawRectangle(Pens.Red, complementRect);
             
    // Create a region from the first rectangle.
    Region myRegion = new Region(regionRect);
             
    // Create a complement region.
    Region complementRegion = new Region(complementRect);
             
    // Get the complement of myRegion when combined with
             
    // complementRegion.
    myRegion.Complement(complementRegion);
             
    // Fill the complement area with blue.
    SolidBrush myBrush = new SolidBrush(Color.Blue);
    e.Graphics.FillRegion(myBrush, myRegion);
}

Public Sub Complement_Region_Example(ByVal e As PaintEventArgs)

    ' Create the first rectangle and draw it to the screen in black.
    Dim regionRect As New Rectangle(20, 20, 100, 100)
    e.Graphics.DrawRectangle(Pens.Black, regionRect)

    ' Create the second rectangle and draw it to the screen in red.
    Dim complementRect As New Rectangle(90, 30, 100, 100)
    e.Graphics.DrawRectangle(Pens.Red, complementRect)

    ' create a region from the first rectangle.
    Dim myRegion As New [Region](regionRect)

    ' Create a complement region.
    Dim complementRegion As New [Region](complementRect)

    ' Get the complement of myRegion when combined with
    ' complementRegion.
    myRegion.Complement(complementRegion)

    ' Fill the complement area with blue.
    Dim myBrush As New SolidBrush(Color.Blue)
    e.Graphics.FillRegion(myBrush, myRegion)
End Sub

适用于

Complement(RectangleF)

Source:: Region.cs

Source:: Region.cs

Source:: Region.cs

Source:: Region.cs

Source:: Region.cs

更新此 Region 以包含与此 Region不相交的指定 RectangleF 结构部分。

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

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

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

Public Sub Complement (rect As RectangleF)

参数

rect: RectangleF

RectangleF 结构，以补充这一 Region。

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：

创建一个矩形并将其绘制到黑色屏幕。
创建第二个矩形，该矩形与第一个矩形相交，并用红色将其绘制到屏幕。
使用第一个矩形创建区域。
获取该区域与第二个矩形的组合。
用蓝色填充补全区域，并将其绘制到屏幕。

请注意，不与该区域相交的第二个矩形的区域为蓝色。

public:
   void Complement_RectF_Example( PaintEventArgs^ e )
   {
      // Create the first rectangle and draw it to the screen in black.
      Rectangle regionRect = Rectangle(20,20,100,100);
      e->Graphics->DrawRectangle( Pens::Black, regionRect );

      // Create the second rectangle and draw it to the screen in red.
      RectangleF complementRect = RectangleF(90,30,100,100);
      e->Graphics->DrawRectangle( Pens::Red, Rectangle::Round( complementRect ) );

      // Create a region using the first rectangle.
      System::Drawing::Region^ myRegion = gcnew System::Drawing::Region( regionRect );

      // Get the complement of the region combined with the second
      // rectangle.
      myRegion->Complement( complementRect );

      // Fill the complement area with blue.
      SolidBrush^ myBrush = gcnew SolidBrush( Color::Blue );
      e->Graphics->FillRegion( myBrush, myRegion );
   }

public void Complement_RectF_Example(PaintEventArgs e)
{
             
    // Create the first rectangle and draw it to the screen in black.
    Rectangle regionRect = new Rectangle(20, 20, 100, 100);
    e.Graphics.DrawRectangle(Pens.Black, regionRect);
             
    // Create the second rectangle and draw it to the screen in red.
    RectangleF complementRect = new RectangleF(90, 30, 100, 100);
    e.Graphics.DrawRectangle(Pens.Red,
        Rectangle.Round(complementRect));
             
    // Create a region using the first rectangle.
    Region myRegion = new Region(regionRect);
             
    // Get the complement of the region combined with the second
             
    // rectangle.
    myRegion.Complement(complementRect);
             
    // Fill the complement area with blue.
    SolidBrush myBrush = new SolidBrush(Color.Blue);
    e.Graphics.FillRegion(myBrush, myRegion);
}

Public Sub Complement_RectF_Example(ByVal e As PaintEventArgs)

    ' Create the first rectangle and draw it to the screen in black.
    Dim regionRect As New Rectangle(20, 20, 100, 100)
    e.Graphics.DrawRectangle(Pens.Black, regionRect)

    ' Create the second rectangle and draw it to the screen in red.
    Dim complementRect As New RectangleF(90, 30, 100, 100)
    e.Graphics.DrawRectangle(Pens.Red, _
    Rectangle.Round(complementRect))

    ' Create a region using the first rectangle.
    Dim myRegion As New [Region](regionRect)

    ' Get the complement of the region combined with the second
    ' rectangle.
    myRegion.Complement(complementRect)

    ' Fill the complement area with blue.
    Dim myBrush As New SolidBrush(Color.Blue)
    e.Graphics.FillRegion(myBrush, myRegion)
End Sub

适用于

Complement(GraphicsPath)

Source:: Region.cs

Source:: Region.cs

Source:: Region.cs

Source:: Region.cs

Source:: Region.cs

更新此 Region 以包含未与此 Region相交的指定 GraphicsPath 部分。

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

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

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

Public Sub Complement (path As GraphicsPath)

参数

path: GraphicsPath

补充这一 Region的 GraphicsPath。

例外

ArgumentNullException

path null。

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：

创建一个矩形并将其绘制到黑色屏幕。
创建第二个矩形，该矩形与第一个矩形相交，并用红色将其绘制到屏幕。
使用第一个矩形创建区域。
创建 GraphicsPath，并将第二个矩形添加到该矩形。
获取与 GraphicsPath相结合的区域的补数。
用蓝色填充补全区域，并将其绘制到屏幕。

请注意，不与该区域相交的 GraphicsPath 区域的颜色为蓝色。

public:
   void Complement_Path_Example( PaintEventArgs^ e )
   {
      // Create the first rectangle and draw it to the screen in black.
      Rectangle regionRect = Rectangle(20,20,100,100);
      e->Graphics->DrawRectangle( Pens::Black, regionRect );

      // Create the second rectangle and draw it to the screen in red.
      Rectangle complementRect = Rectangle(90,30,100,100);
      e->Graphics->DrawRectangle( Pens::Red, complementRect );

      // Create a graphics path and add the second rectangle to it.
      GraphicsPath^ complementPath = gcnew GraphicsPath;
      complementPath->AddRectangle( complementRect );

      // Create a region using the first rectangle.
      System::Drawing::Region^ myRegion = gcnew System::Drawing::Region( regionRect );

      // Get the complement of myRegion when combined with
      // complementPath.
      myRegion->Complement( complementPath );

      // Fill the complement area with blue.
      SolidBrush^ myBrush = gcnew SolidBrush( Color::Blue );
      e->Graphics->FillRegion( myBrush, myRegion );
   }

public void Complement_Path_Example(PaintEventArgs e)
{
             
    // Create the first rectangle and draw it to the screen in black.
    Rectangle regionRect = new Rectangle(20, 20, 100, 100);
    e.Graphics.DrawRectangle(Pens.Black, regionRect);
             
    // Create the second rectangle and draw it to the screen in red.
    Rectangle complementRect = new Rectangle(90, 30, 100, 100);
    e.Graphics.DrawRectangle(Pens.Red, complementRect);
             
    // Create a graphics path and add the second rectangle to it.
    GraphicsPath complementPath = new GraphicsPath();
    complementPath.AddRectangle(complementRect);
             
    // Create a region using the first rectangle.
    Region myRegion = new Region(regionRect);
             
    // Get the complement of myRegion when combined with
             
    // complementPath.
    myRegion.Complement(complementPath);
             
    // Fill the complement area with blue.
    SolidBrush myBrush = new SolidBrush(Color.Blue);
    e.Graphics.FillRegion(myBrush, myRegion);
}

Public Sub Complement_Path_Example(ByVal e As PaintEventArgs)

    ' Create the first rectangle and draw it to the screen in black.
    Dim regionRect As New Rectangle(20, 20, 100, 100)
    e.Graphics.DrawRectangle(Pens.Black, regionRect)

    ' Create the second rectangle and draw it to the screen in red.
    Dim complementRect As New Rectangle(90, 30, 100, 100)
    e.Graphics.DrawRectangle(Pens.Red, complementRect)

    ' Create a graphics path and add the second rectangle to it.
    Dim complementPath As New GraphicsPath
    complementPath.AddRectangle(complementRect)

    ' Create a region using the first rectangle.
    Dim myRegion As New [Region](regionRect)

    ' Get the complement of myRegion when combined with
    ' complementPath.
    myRegion.Complement(complementPath)

    ' Fill the complement area with blue.
    Dim myBrush As New SolidBrush(Color.Blue)
    e.Graphics.FillRegion(myBrush, myRegion)
End Sub

适用于

Complement(Rectangle)

Source:: Region.cs

Source:: Region.cs

Source:: Region.cs

Source:: Region.cs

Source:: Region.cs

更新此 Region 以包含与此 Region不相交的指定 Rectangle 结构部分。

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

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

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

Public Sub Complement (rect As Rectangle)

参数

rect: Rectangle

Rectangle 结构，以补充这一 Region。

示例

有关示例，请参阅 Complement(RectangleF) 方法。

适用于

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