Graphics.Dispose Método

Definição

Libera todos os recursos usados por este Graphics.Releases all resources used by this Graphics.

public:
 virtual void Dispose();
public void Dispose ();
abstract member Dispose : unit -> unit
override this.Dispose : unit -> unit
Public Sub Dispose ()

Implementações

Exemplos

O exemplo de código a seguir foi projetado para uso com Windows Forms, e ele requer PaintEventArgs e , que é um parâmetro do Paint manipulador de eventos.The following code example is designed for use with Windows Forms, and it requires PaintEventArgse, which is a parameter of the Paint event handler. O código executa as seguintes ações:The code performs the following actions:

  • Cria um Image de um arquivo de gráficos SampImag.jpg no diretório de exemplo.Creates an Image from a graphics file SampImag.jpg in the example directory.

  • Cria um a Graphics partir do Image .Creates a Graphics from the Image.

  • Altera a imagem preenchendo um retângulo dentro dela.Alters the image by filling a rectangle within it.

  • Desenha o Image para a tela.Draws the Image to the screen.

  • Libera o criado Graphics .Releases the created Graphics.

private:
   void FromImageImage1( PaintEventArgs^ e )
   {
      // Create image.
      Image^ imageFile = Image::FromFile( "SampImag.jpg" );

      // Create graphics object for alteration.
      Graphics^ newGraphics = Graphics::FromImage( imageFile );

      // Alter image.
      newGraphics->FillRectangle( gcnew SolidBrush( Color::Black ), 100, 50, 100, 100 );

      // Draw image to screen.
      e->Graphics->DrawImage( imageFile, PointF(0.0F,0.0F) );

      // Release graphics object.
      delete newGraphics;
   }
private void FromImageImage1(PaintEventArgs e)
{
    // Create image.
    Image imageFile = Image.FromFile("SampImag.jpg");
             
    // Create graphics object for alteration.
    Graphics newGraphics = Graphics.FromImage(imageFile);
             
    // Alter image.
    newGraphics.FillRectangle(new SolidBrush(Color.Black), 100, 50, 100, 100);
             
    // Draw image to screen.
    e.Graphics.DrawImage(imageFile, new PointF(0.0F, 0.0F));
             
    // Release graphics object.
    newGraphics.Dispose();
}
Private Sub FromImageImage1(ByVal e As PaintEventArgs)

    ' Create image.
    Dim imageFile As Image = Image.FromFile("SampImag.jpg")

    ' Create graphics object for alteration.
    Dim newGraphics As Graphics = Graphics.FromImage(imageFile)

    ' Alter image.
    newGraphics.FillRectangle(New SolidBrush(Color.Black), 100, _
    50, 100, 100)

    ' Draw image to screen.
    e.Graphics.DrawImage(imageFile, New PointF(0.0F, 0.0F))

    ' Dispose of graphics object.
    newGraphics.Dispose()
End Sub

Comentários

DisposeA chamada permite que os recursos usados por ele Graphics sejam realocados para outras finalidades.Calling Dispose allows the resources used by this Graphics to be reallocated for other purposes.

Aplica-se a