Control.Region Control.Region Control.Region Control.Region Property

定義

コントロールに関連付けられたウィンドウ領域を取得または設定します。Gets or sets the window region associated with the control.

public:
 property System::Drawing::Region ^ Region { System::Drawing::Region ^ get(); void set(System::Drawing::Region ^ value); };
[System.ComponentModel.Browsable(false)]
public System.Drawing.Region Region { get; set; }
member this.Region : System.Drawing.Region with get, set
Public Property Region As Region

プロパティ値

コントロールに関連付けられたウィンドウ RegionThe window Region associated with the control.

次のコード例は、丸いボタンをRegion作成することによってプロパティを使用する方法を示しています。The following code example demonstrates how to use the Region property by creating a round button. この例を実行するには、というroundButtonボタンを含むフォームに次のコードを貼り付けます。To run the example, paste the following code in a form containing a button called roundButton. この例では、 Paintイベントが、この例で定義されているイベントハンドラーに接続されている必要があります。This example requires that the Paint event is connected to the event handler defined in the example.

private:
   // This method will change the square button to a circular button by 
   // creating a new circle-shaped GraphicsPath object and setting it 
   // to the RoundButton objects region.
   void roundButton_Paint( Object^ sender,
      System::Windows::Forms::PaintEventArgs^ e )
   {
      System::Drawing::Drawing2D::GraphicsPath^ buttonPath =
         gcnew System::Drawing::Drawing2D::GraphicsPath;
      
      // Set a new rectangle to the same size as the button's 
      // ClientRectangle property.
      System::Drawing::Rectangle newRectangle = roundButton->ClientRectangle;
      
      // Decrease the size of the rectangle.
      newRectangle.Inflate(  -10, -10 );
      
      // Draw the button's border.
      e->Graphics->DrawEllipse( System::Drawing::Pens::Black, newRectangle );
      
      // Increase the size of the rectangle to include the border.
      newRectangle.Inflate( 1, 1 );
      
      // Create a circle within the new rectangle.
      buttonPath->AddEllipse( newRectangle );
      
      // Set the button's Region property to the newly created 
      // circle region.
      roundButton->Region = gcnew System::Drawing::Region( buttonPath );
   }
// This method will change the square button to a circular button by 
// creating a new circle-shaped GraphicsPath object and setting it 
// to the RoundButton objects region.
private void roundButton_Paint(object sender, 
	System.Windows.Forms.PaintEventArgs e)
{

	System.Drawing.Drawing2D.GraphicsPath buttonPath = 
		new System.Drawing.Drawing2D.GraphicsPath();

	// Set a new rectangle to the same size as the button's 
	// ClientRectangle property.
	System.Drawing.Rectangle newRectangle = roundButton.ClientRectangle;

	// Decrease the size of the rectangle.
	newRectangle.Inflate(-10, -10);
	
	// Draw the button's border.
	e.Graphics.DrawEllipse(System.Drawing.Pens.Black, newRectangle);

	// Increase the size of the rectangle to include the border.
	newRectangle.Inflate( 1,  1);

	// Create a circle within the new rectangle.
	buttonPath.AddEllipse(newRectangle);
			
	// Set the button's Region property to the newly created 
	// circle region.
	roundButton.Region = new System.Drawing.Region(buttonPath);

}
' This method will change the square button to a circular button by 
' creating a new circle-shaped GraphicsPath object and setting it 
' to the RoundButton objects region.
Private Sub roundButton_Paint(ByVal sender As Object, _
    ByVal e As System.Windows.Forms.PaintEventArgs) Handles roundButton.Paint

    Dim buttonPath As New System.Drawing.Drawing2D.GraphicsPath

    ' Set a new rectangle to the same size as the button's 
    ' ClientRectangle property.
    Dim newRectangle As Rectangle = roundButton.ClientRectangle

    ' Decrease the size of the rectangle.
    newRectangle.Inflate(-10, -10)

    ' Draw the button's border.
    'e.Graphics.DrawEllipse(System.Drawing.Pens.Black, newRectangle)

    'Increase the size of the rectangle to include the border.
    newRectangle.Inflate(1, 1)

    ' Create a circle within the new rectangle.
    buttonPath.AddEllipse(newRectangle)
    e.Graphics.DrawPath(Pens.Black, buttonPath)
    ' Set the button's Region property to the newly created 
    ' circle region.
    roundButton.Region = New System.Drawing.Region(buttonPath)

End Sub

注釈

ウィンドウ領域は、オペレーティングシステムが描画を許可するウィンドウ内のピクセルのコレクションです。The window region is a collection of pixels within the window where the operating system permits drawing. オペレーティングシステムには、ウィンドウ領域の外側にあるウィンドウの一部は表示されません。The operating system does not display any portion of a window that lies outside of the window region. コントロールの領域の座標は、コントロールのクライアント領域ではなく、コントロールの左上隅を基準としています。The coordinates of a control's region are relative to the upper-left corner of the control, not the client area of the control.

注意

領域に含まれるピクセルのコレクションは、不連続にすることができます。The collection of pixels contained with the region can be noncontiguous.

セキュリティ

UIPermission
すべてのウィンドウでこのプロパティ値を設定します。for all windows to set this property value. 関連付けられた列挙型:AllWindowsAssociated enumeration: AllWindows

適用対象

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