Region.Exclude 方法

來源:

Region.cs

來源:

Region.cs

來源:

Region.cs

來源:

Region.cs

來源:

Region.cs

來源:

Region.cs

來源:

Region.cs

來源:

Region.cs

來源:

Region.cs

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

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

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

Public Sub Exclude (region As Region)

參數

例外狀況

範例

關於程式碼範例，請參見 and Exclude(RectangleF) 方法。Complement(Region)

來源:

Region.cs

來源:

Region.cs

來源:

Region.cs

來源:

Region.cs

來源:

Region.cs

來源:

Region.cs

來源:

Region.cs

來源:

Region.cs

來源:

Region.cs

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

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

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

Public Sub Exclude (path As GraphicsPath)

參數

例外狀況

範例

以下程式碼範例展示了 Region 建構子與 Exclude and Dispose 方法。

此範例設計用於 Windows 表單。 將程式碼貼到表單中，處理表單FillRegionExcludingPath事件時呼叫該Paint方法，傳遞e為 PaintEventArgs。

private:
   void FillRegionExcludingPath( PaintEventArgs^ e )
   {
      // Create the region using a rectangle.
      System::Drawing::Region^ myRegion = gcnew System::Drawing::Region( Rectangle(20,20,100,100) );

      // Create the GraphicsPath.
      System::Drawing::Drawing2D::GraphicsPath^ path = gcnew System::Drawing::Drawing2D::GraphicsPath;

      // Add a circle to the graphics path.
      path->AddEllipse( 50, 50, 25, 25 );

      // Exclude the circle from the region.
      myRegion->Exclude( path );

      // Retrieve a Graphics object from the form.
      Graphics^ formGraphics = e->Graphics;

      // Fill the region in blue.
      formGraphics->FillRegion( Brushes::Blue, myRegion );

      // Dispose of the path and region objects.
      delete path;
      delete myRegion;
   }

private void FillRegionExcludingPath(PaintEventArgs e)
{

    // Create the region using a rectangle.
    Region myRegion = new Region(new Rectangle(20, 20, 100, 100));

    // Create the GraphicsPath.
    System.Drawing.Drawing2D.GraphicsPath path = 
        new System.Drawing.Drawing2D.GraphicsPath();

    // Add a circle to the graphics path.
    path.AddEllipse(50, 50, 25, 25);

    // Exclude the circle from the region.
    myRegion.Exclude(path);

    // Retrieve a Graphics object from the form.
    Graphics formGraphics = e.Graphics;

    // Fill the region in blue.
    formGraphics.FillRegion(Brushes.Blue, myRegion);

    // Dispose of the path and region objects.
    path.Dispose();
    myRegion.Dispose();
}

Private Sub FillRegionExcludingPath(ByVal e As PaintEventArgs)

    ' Create the region using a rectangle.
    Dim myRegion As New Region(New Rectangle(20, 20, 100, 100))

    ' Create the GraphicsPath.
    Dim path As New System.Drawing.Drawing2D.GraphicsPath

    ' Add a circle to the graphics path.
    path.AddEllipse(50, 50, 25, 25)

    ' Exclude the circle from the region.
    myRegion.Exclude(path)

    ' Retrieve a Graphics object from the form.
    Dim formGraphics As Graphics = e.Graphics

    ' Fill the region in blue.
    formGraphics.FillRegion(Brushes.Blue, myRegion)

    ' Dispose of the path and region objects.
    path.Dispose()
    myRegion.Dispose()

End Sub

來源:

Region.cs

來源:

Region.cs

來源:

Region.cs

來源:

Region.cs

來源:

Region.cs

來源:

Region.cs

來源:

Region.cs

來源:

Region.cs

來源:

Region.cs

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

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

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

Public Sub Exclude (rect As Rectangle)

參數

範例

程式碼範例請參見該 Exclude(RectangleF) 方法。

來源:

Region.cs

來源:

Region.cs

來源:

Region.cs

來源:

Region.cs

來源:

Region.cs

來源:

Region.cs

來源:

Region.cs

來源:

Region.cs

來源:

Region.cs

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

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

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

Public Sub Exclude (rect As RectangleF)

參數

範例

以下範例是為 Windows 表單設計，並需要 PaintEventArgse，這是事件處理器的 Paint 參數。 此程式碼會執行下列動作：

• 建立一個矩形並以黑色畫到螢幕上

• 會產生第二個矩形，與第一個相交，並以紅色畫出畫面。

• 用第一個矩形建立一個區域。

• 結合第二個矩形時，得到該區域的非排斥面積。

• 用藍色填滿未被排除的區域，並繪製到螢幕上。

注意該區域中不與矩形相交的區域以藍色標示。

public:
   void Exclude_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 nonexcluded area of myRegion when combined with
      // complementRect.
      myRegion->Exclude( complementRect );
      
      // Fill the nonexcluded area of myRegion with blue.
      SolidBrush^ myBrush = gcnew SolidBrush( Color::Blue );
      e->Graphics->FillRegion( myBrush, myRegion );
   }

public void Exclude_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 nonexcluded area of myRegion when combined with
             
    // complementRect.
    myRegion.Exclude(complementRect);
             
    // Fill the nonexcluded area of myRegion with blue.
    SolidBrush myBrush = new SolidBrush(Color.Blue);
    e.Graphics.FillRegion(myBrush, myRegion);
}

Public Sub Exclude_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 nonexcluded area of myRegion when combined with
    ' complementRect.
    myRegion.Exclude(complementRect)

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