C# Discussion Boards - CodeProject

Problems with SharpGL Control

9-Apr-13 12:36

protected means that the current class and any class derived from it can call that method/property. That's a basic question which you really should have been able to answer by looking at the documentation.

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Re: class question

Abhinav S9-Apr-13 16:14

Abhinav S

9-Apr-13 16:14

MSDN is always a good source of information for any kind of questions.
For this particular question - go through http://msdn.microsoft.com/en-us/library/x35feb9t%28v=vs.80%29.aspx[^].

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Re: class question

Bernhard Hiller9-Apr-13 23:46

Bernhard Hiller

9-Apr-13 23:46

Actually, you want to keep the method/property/member variable private. But when you need to access it from a derived class, so you change that to protected. Other classes which do not derive from the original class still cannot see it.

Aarón C de C9-Apr-13 11:05

Aarón C de C

9-Apr-13 11:05

I have a windows form project that I started before installing the SharpGL extension.

The SharpGL library works fine if I create a SharpGL project. But when I try to add a SharpGL control in my project, it says that it cannot find the namespace "OpenGLControl". Having in mind that I added all the references, it's kind of strange, but it's true.

When I type SharpGL.OpenGLControl, it doesn't appear in the autocomplete.

How can I add an OpenGLControl without starting my project from scracth?

integrating clips with c#

Farhaneh9-Apr-13 5:58

Farhaneh

9-Apr-13 5:58

Hi everyone.
I wanna design an expert system with clips (inference engine)
and c#(user interface). My problem is integrating clips with c#. I used clipsnet and clipslib but I couldn'd make any connection between these 2 languages. Infact I couldn't load my clips file in c#!

public CLIPSNet.DataTypes.Multifield h = new CLIPSNet.DataTypes.Multifield();

       private void Form1_Load(object sender, EventArgs e)
       {
           CLIPSNet.Environment j = new CLIPSNet.Environment();
           int i = j.Load(@"..\..\..\instance.clp");
           j.Reset();

would u do me a favor and help me to solve it's problem?
what should I do?

Pete O'Hanlon9-Apr-13 6:11

9-Apr-13 6:11

Normally I would tell you to take this up with the manufacturers of the original library, as they would be best placed to help you, however I would suggest that the problem is down to the path being wrong in your Load method. Is there some reason that you aren't copying this file to the build output directory and loading it from there? When you deploy your application, I would suspect that the relative path you have there would be wrong.

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Farhaneh9-Apr-13 9:32

Farhaneh

9-Apr-13 9:32

thank u.
what do u mean by build output directory?

Farhaneh9-Apr-13 9:33

Farhaneh

9-Apr-13 9:33

what do u mean by build output directory?

thank u.

Pete O'Hanlon9-Apr-13 9:35

9-Apr-13 9:35

When you do a build in Visual Studio, it typically goes into the Release or Debug directory. This is the build output directory.

Could you please stop using text speak? I find it painful to read, and it has no place in a professional programming site.

I was brought up to respect my elders. I don't respect many people nowadays.

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Console Check

Bassam Abdul-Baki9-Apr-13 5:53

Bassam Abdul-Baki

9-Apr-13 5:53

I have a console app in C# that runs for a very long time. Basically, it loops through from one to a brazillian for days on end. Depending on conditions met, it will print certain output. Nothing unusual there.

Is it possible to press a key and have it tell me which loop index I'm in? I do not want to programmatically print the index every Nth time or second. I would rather have it wait until I press a key and have it spit it out.

I guess from a threaded Windows app, this would be easier. I'm trying to see if there's a way to do it from a command-line app on-demand, without having to do it iteratively.

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Pete O'Hanlon9-Apr-13 6:14

9-Apr-13 6:14

You could always use Console.KeyAvailable to do this. This is a none blocking method, so you could use that to output the variable, e.g.

if (Console.KeyAvailable)
  Console.WriteLine("Currently at index {0}", index);

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Bassam Abdul-Baki9-Apr-13 6:39

Bassam Abdul-Baki

9-Apr-13 6:39

Perfect, almost!

I had to add two more lines arround the WriteLine command:

Console.Write("\b");

and

Console.ReadKey(false);

The former deletes (backspaces) the character entered, while the latter stops printing a million times. I could also only accept ENTER for printing.

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MicroVirus10-Apr-13 0:33

MicroVirus

10-Apr-13 0:33

Rather than wring a backspace to the console, which I think can be problematic in certain situations, you could use the ReadKey(true) function:

if (Console.KeyAvailable)
{
  // Flush the input buffer, suppressing output(echo) of the input
  while (Console.KeyAvailble) Console.ReadKey(true);
  // TODO: Print the index here, for instance something like
  Console.WriteLine("At index {0}", index);
}