Control.OnMouseMove(MouseEventArgs) Control.OnMouseMove(MouseEventArgs) Control.OnMouseMove(MouseEventArgs) Control.OnMouseMove(MouseEventArgs) Method

Definición

Genera el evento MouseMove. Raises the MouseMove event.

protected:
 virtual void OnMouseMove(System::Windows::Forms::MouseEventArgs ^ e);
protected virtual void OnMouseMove (System.Windows.Forms.MouseEventArgs e);
abstract member OnMouseMove : System.Windows.Forms.MouseEventArgs -> unit
override this.OnMouseMove : System.Windows.Forms.MouseEventArgs -> unit
Protected Overridable Sub OnMouseMove (e As MouseEventArgs)
Parámetros
e
MouseEventArgs MouseEventArgs MouseEventArgs MouseEventArgs

Objeto MouseEventArgs que contiene los datos del evento. A MouseEventArgs that contains the event data.

Ejemplos

En el ejemplo de código siguiente se muestra cómo invalidar el OnMouseHover y OnMouseMove métodos en una clase derivada.The following code example demonstrates how to override the OnMouseHover and OnMouseMove methods in a derived class. Para ejecutar el ejemplo, pegue el código siguiente en un formulario nuevo y pegue esta clase, que forman el mismo archivo, después del formulario.To run the example, paste the following code in a new form and paste this class, forming the same file, after the form. Agregue un botón de tipo FunButton al formulario.Add a button of type FunButton to the form.

// To use this example create a new form and paste this class 
// forming the same file, after the form class in the same file.  
// Add a button of type FunButton to the form. 
public ref class FunButton: public Button
{
protected:
   virtual void OnMouseHover( System::EventArgs^ e ) override
   {
      
      // Get the font size in Points, add one to the
      // size, and reset the button's font to the larger
      // size.
      float fontSize = Font->SizeInPoints;
      fontSize += 1;
      System::Drawing::Size buttonSize = Size;
      this->Font = gcnew System::Drawing::Font( Font->FontFamily,fontSize,Font->Style );
      
      // Increase the size width and height of the button 
      // by 5 points each.
      Size = System::Drawing::Size( Size.Width + 5, Size.Height + 5 );
      
      // Call myBase.OnMouseHover to activate the delegate.
      Button::OnMouseHover( e );
   }

   virtual void OnMouseMove( MouseEventArgs^ e ) override
   {
      
      // Make the cursor the Hand cursor when the mouse moves 
      // over the button.
      Cursor = Cursors::Hand;
      
      // Call MyBase.OnMouseMove to activate the delegate.
      Button::OnMouseMove( e );
   }
public class FunButton:
	Button

{
	protected override void OnMouseHover(System.EventArgs e)
	{

		// Get the font size in Points, add one to the
		// size, and reset the button's font to the larger
		// size.
		float fontSize = Font.SizeInPoints;
		fontSize += 1;
		System.Drawing.Size buttonSize = Size;
		this.Font = new System.Drawing.Font(
			Font.FontFamily, fontSize, Font.Style);

		// Increase the size width and height of the button 
		// by 5 points each.
		Size = new System.Drawing.Size(Size.Width+5, Size.Height+5);

		// Call myBase.OnMouseHover to activate the delegate.
		base.OnMouseHover(e);
	}

	protected override void OnMouseMove(MouseEventArgs e)
	{

		// Make the cursor the Hand cursor when the mouse moves 
		// over the button.
		Cursor = Cursors.Hand;

		// Call MyBase.OnMouseMove to activate the delegate.
		base.OnMouseMove(e);
	}
Public Class FunButton
    Inherits Button

    Protected Overrides Sub OnMouseHover(ByVal e As System.EventArgs)

        ' Get the font size in Points, add one to the
        ' size, and reset the button's font to the larger
        ' size.
        Dim fontSize As Single = Font.SizeInPoints
        fontSize += 1
        Dim buttonSize As System.Drawing.Size = Size
        Me.Font = New System.Drawing.Font _
            (Font.FontFamily, fontSize, Font.Style)

        ' Increase the size width and height of the button 
        ' by 5 points each.
        Size = New System.Drawing.Size _
            (Size.Width + 5, Size.Height + 5)

        ' Call myBase.OnMouseHover to activate the delegate.
        MyBase.OnMouseHover(e)
    End Sub

    Protected Overrides Sub OnMouseMove(ByVal e As MouseEventArgs)

        ' Make the cursor the Hand cursor when the mouse moves 
        ' over the button.
        Cursor = Cursors.Hand

        ' Call MyBase.OnMouseMove to activate the delegate.
        MyBase.OnMouseMove(e)
    End Sub

Comentarios

Cuando se genera un evento, se invoca el controlador de eventos a través de un delegado.Raising an event invokes the event handler through a delegate. Para obtener más información, consulte controlar y provocar eventos.For more information, see Handling and Raising Events.

El método OnMouseMove también permite que las clases derivadas controlen el evento sin adjuntar ningún delegado.The OnMouseMove method also allows derived classes to handle the event without attaching a delegate. Ésta es la técnica preferida para controlar el evento en una clase derivada.This is the preferred technique for handling the event in a derived class.

Notas a los desarrolladores de herederos

Al reemplazar OnMouseMove(MouseEventArgs) en una clase derivada, asegúrese de llamar al método OnMouseMove(MouseEventArgs) de la clase base para que los delegados registrados reciban el evento. When overriding OnMouseMove(MouseEventArgs) in a derived class, be sure to call the base class's OnMouseMove(MouseEventArgs) method so that registered delegates receive the event.

Se aplica a

Consultar también