Overriding MouseDown/MouseUp in a class

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Hi. I'm a bit newbie in C#. I followed some examples found to overrides mouse actions, but they're never triggered. Some help?
Thanks in advance.

using System;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Collections.Generic;
using System.Windows.Forms;

namespace Trevo.Windows.UI
{
   public class Rectangulo : Control
   {
      #region Overrides

      protected override void OnCreateControl()
      {
         this.MouseDown += new MouseEventHandler(this.Rect_MouseDown);
         //MouseMove += new MouseEventHandler(Rect_MouseDown);
         this.MouseUp += new MouseEventHandler(this.Rect_MouseDown);
         base.OnCreateControl();
      }

      #endregion


      #region Handlers

      private void Rect_MouseDown(object sender, MouseEventArgs e)
      {
         MessageBox.Show("click");
      }
      #endregion
}

Posted 5-Sep-10 15:55pm

FernandoUY

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3 solutions

Solution 2

Thanks Mark for your answer.

The code I published, was simplified. In the constructor it creates a Rectangle. That's the control that I'am trying to click

Members area

#region Miembros

// Graficos
private Graphics _Area = null;
private Font _Letra = new Font("Tahoma", 8, FontStyle.Regular, GraphicsUnit.Point);

// Posicion
private int _Izquierda = 0; // X
private int _Arriba = 0; // Y
private int _Ancho = 0;
private int _Altura = 0;

// Estado
private bool _Seleccionado = false;
private bool _Visible = true;

// Propiedades graficas
private Color _ColorBorde = Color.Black;
private Color _ColorBordeDefecto = Color.Black;
private float _AnchoBorde = 1;
private Color _ColorRelleno = Color.White;
redondeadas

#endregion

... the constructor

public Rectangulo(Graphics pG, int pIzquierda, int pDerecha, int pAncho, int pAltura)
{
   _Area = pG;

   _Izquierda = pIzquierda;
   _Arriba = pDerecha;
   _Ancho = pAncho;
   _Altura = pAltura;
   Mostrar();
}

... and where to show the shape

public void Mostrar()
{
   //SolidBrush oSolidBrush = new SolidBrush(_ColorRelleno);
   Brush oSolidBrush = new LinearGradientBrush(new Rectangle(_Izquierda,_Arriba,_Ancho,_Altura),_ColorRelleno,Color.White,45,false);
   Pen oPen = new Pen(_ColorBorde, _AnchoBorde);

   // Dibuja el área
   _Area.FillRectangle(oSolidBrush, _Izquierda, _Arriba, _Ancho, _Altura);
   // Dibuja el borde
   _Area.DrawRectangle(oPen, _Izquierda, _Arriba, _Ancho, _Altura);
}

Posted 6-Sep-10 15:27pm

FernandoUY

Solution 3

Got it Mark! I have to handle the mouse events inside the panel that contains the rectangles.
Thanks for your support.

Posted 7-Sep-10 0:01am

FernandoUY

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Not Active · Accepted Answer · 2010-09-05T19:08:00

First, you are not overriding the mouse events, you are handling them. I understand you are new but this is a very essential concept that you must understand before you can proceed successfully.

Right now you have a control that displays nothing and would be difficult for you click on. Try adding a label or draw a shape. You've also must understand the effect of where you place the control. If it is in a container, the container may be getting the event before it reaches your control.

Overriding MouseDown/MouseUp in a class

3 solutions

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Solution 2

Solution 3

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