Cursor.Dispose Metodo

public:
 virtual void Dispose();

public void Dispose ();

abstract member Dispose : unit -> unit
override this.Dispose : unit -> unit

Public Sub Dispose ()

Implementazioni

Esempio

Nell'esempio di codice seguente viene disegnato il cursore specificato nel modulo nella dimensione normale e in modalità estesa, due volte le dimensioni. Questo esempio richiede un Form oggetto e un Cursor per passare al metodo quando viene chiamato.

void DrawCursorsOnForm( System::Windows::Forms::Cursor^ cursor )
{
   
   // If the form's cursor is not the Hand cursor and the
   // Current cursor is the Default, Draw the specified
   // cursor on the form in normal size and twice normal size.
   if ( this->Cursor != Cursors::Hand && System::Windows::Forms::Cursor::Current == Cursors::Default )
   {
      
      // Draw the cursor stretched.
      Graphics^ graphics = this->CreateGraphics();
      Rectangle rectangle = Rectangle(Point(10,10),System::Drawing::Size( cursor->Size.Width * 2, cursor->Size.Height * 2 ));
      cursor->DrawStretched( graphics, rectangle );
      
      // Draw the cursor in normal size.
      rectangle.Location = Point(rectangle.Width + rectangle.Location.X,rectangle.Height + rectangle.Location.Y);
      rectangle.Size = cursor->Size;
      cursor->Draw( graphics, rectangle );
      
      // Dispose of the cursor.
      delete cursor;
   }
}

private void DrawCursorsOnForm(Cursor cursor)
{
   // If the form's cursor is not the Hand cursor and the 
   // Current cursor is the Default, Draw the specified 
   // cursor on the form in normal size and twice normal size.
   if(this.Cursor != Cursors.Hand & 
     Cursor.Current == Cursors.Default)
   {
      // Draw the cursor stretched.
      Graphics graphics = this.CreateGraphics();
      Rectangle rectangle = new Rectangle(
        new Point(10,10), new Size(cursor.Size.Width * 2, 
        cursor.Size.Height * 2));
      cursor.DrawStretched(graphics, rectangle);
        
      // Draw the cursor in normal size.
      rectangle.Location = new Point(
      rectangle.Width + rectangle.Location.X, 
        rectangle.Height + rectangle.Location.Y);
      rectangle.Size = cursor.Size;
      cursor.Draw(graphics, rectangle);

      // Dispose of the cursor.
      cursor.Dispose();
   }
}

Private Sub DrawCursorsOnForm(cursor As Cursor)
   ' If the form's cursor is not the Hand cursor and the 
   ' Current cursor is the Default, Draw the specified 
   ' cursor on the form in normal size and twice normal size. 
   If (Not Me.Cursor.Equals(Cursors.Hand)) And _
     Cursor.Current.Equals(Cursors.Default) Then

      ' Draw the cursor stretched.
      Dim graphics As Graphics = Me.CreateGraphics()
      Dim rectangle As New Rectangle(New Point(10, 10), _
        New Size(cursor.Size.Width * 2, cursor.Size.Height * 2))
      cursor.DrawStretched(graphics, rectangle)
     
      ' Draw the cursor in normal size.
      rectangle.Location = New Point(rectangle.Width + _
        rectangle.Location.X, rectangle.Height + rectangle.Location.Y)
      rectangle.Size = cursor.Size
      cursor.Draw(graphics, rectangle)

      ' Dispose of the cursor.
      cursor.Dispose()
   End If
End Sub

Commenti

Chiamare il metodo Dispose dopo aver terminato di utilizzare l'oggetto Cursor. Il metodo Dispose lascia l'oggetto Cursor in una condizione di inutilizzabilità. Dopo aver chiamato Dispose, è necessario rilasciare tutti i riferimenti all'oggetto Cursor in modo che il Garbage Collector possa recuperare la memoria che l'oggetto Cursor occupava. Per altre informazioni, vedere Pulizia delle risorse non gestite e implementazione di un metodo Dispose.

Si applica a