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、使用する方法を示します、Region丸いボタンを作成するプロパティ。The following code example demonstrates how to use the Region property by creating a round button. 例を実行するには、というボタンを含むフォームで次のコードを貼り付けroundButtonします。To run the example, paste the following code in a form containing a button called roundButton. この例では、する必要があります、Paintの例で定義されたイベント ハンドラーにイベントが接続されています。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

ウィンドウ領域では、オペレーティング システムで描画が許可されてい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 システムでは、ウィンドウの領域の外部にあるウィンドウの任意の部分は表示されません。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では、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に対して相対的です。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

ピクセルを領域に含まれるコレクションは非連続にできます。The collection of pixels contained with the region can be noncontiguous.

セキュリティ

UIPermission
このプロパティの値を設定するすべてのウィンドウ。for all windows to set this property value. 関連付けられた列挙体。 AllWindowsAssociated enumeration: AllWindows

適用対象

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