Adding functionality to controls on a GUI

I am brand new to Visual C++ programming. I started reading a book and the tutorials available here, and started playing with come code.

I've created a Button on a GUI in a dialog based project. Separatly I've written a console application that does something. Now, I took that code and pasted it in the event description of that Button.
The original code uses a header file I've made. I've included it in the .cpp sourse for the GUI, but the compiler says that there is no such file or directory.
Here's are some sections of the code to see where I put stuff:

Code:

---

// Initial GUI.cpp : Defines the class behaviors for the application.
//

#include "stdafx.h"
#include "Initial GUI.h"
#include "Initial GUIDlg.h"
#include <BAFParse.h>

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CInitialGUIApp

BEGIN_MESSAGE_MAP(CInitialGUIApp, CWinApp)
        //{{AFX_MSG_MAP(CInitialGUIApp

---

Code:

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void CInitialGUIDlg::OnOpenFile()
{

  FILE *inp;
  int SpaceLeftU, NameLengthU, SpaceLeftP;
  char **Units, **Params;
................................

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Hi,

There's a "windows programming forum" here, which is what you are doing, and in the future, you may want to try posting your windows programming questions there.

Quote:

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The original code uses a header file I've made. I've included it in the .cpp sourse for the GUI

---

..but did you insert the header file in your project?

Maybe the Multiple Source File FAQ will help.

Thanks, I'll check out the other forum. and I did add the header file to the project.