derive a class for a panel object?

Question

3.00/5 (1 vote)

See more:

Hello.

I am using the OpenTK toolkit to utilise OpenGL within my application.

I need to create a new class for the 'panel' object in C#.

I will then overide some of the methods and add the openGL stuff in there.

I have placed a panel on my form, but cant figure out what to do next.

In c++, I could simply double click it and it would add a full class for the object, but I can not figure it out.

Also, once this is done, how do I attach my panel on the form to this new class?

Thank you,
Regards,
Stephen

Posted 3-Aug-11 4:13am

stephen.darling

Add a Solution

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Shameel · Answer 1 · 2011-08-03T04:19:00

Solution 1

To derive a class from the Panel object, you do something like this:

C#

public class MyPanel : System.Windows.Forms.Panel {
    override void OnPaint(PaintEventArgs e) {
        base.OnPaint(e);
    }
}

Override the Panel methods to extend its functionaliy. You can then place an instance of the MyPanel class in your form.

Posted 3-Aug-11 4:19am

Shameel

Comments

stephen.darling 3-Aug-11 10:39am

Thank you,

I have managed to derive the class, however, when I add a panal to my form, I still cant figure out how to connect it to this new class?

Thank you,
Steve

BobJanova 3-Aug-11 12:17pm

You don't add a Panel to your form. Instead, add an instance of MyPanel to the form. If you're using Visual Studio, any components in the project will appear inside new groups in the toolbox.

stephen.darling 3-Aug-11 12:25pm

Hi.
Thats what I though, however, nothing new is showing up in the toolbox panal in devStudio. I am using Microsoft Visual Studio 2010 Professional.

I have created the following class...
<pre>
using System;
using System.Collections.Generic;
using System.Text;
using System.Windows.Forms;
using OpenTK.OpenGL;
using OpenTK.OpenGL.Enums;

namespace CellSim
{
public abstract class OpenGLPanel : System.Windows.Forms.Panel
{
private OpenTK.GLControl glControl1;

etc.......
</pre>

But I cant seem to connect it to a panel, or add a panel that can use this class.

I coppied the class directly form anouther open source app, and it is working fine in that app. Also, my app builds without any errors?

Thank you,
Stephen

[no name] 3-Aug-11 14:47pm

There is nothing called attaching the class to a Panel. Your class "is the" Panel. When you build the project that contains the OpenGLPanel class, Visual Studio will add the control to your ToolBox. Instead of adding a Panel, add the OpenGLPanel control that shows up in your ToolBox.