// ********************************************************************** //
// ** This file was downloaded from Jeff Heaton's Source Code Examples ** //
// **                      www.heat-on.com/source                      ** //
// ********************************************************************** //
// Copyright 1999 by Jeff Heaton
// ********************************************************************** //
// Permission is granted for royaltyfree use in compiled form.  No 
// additional licensing is required.  This code may not be distributed 
// in source form without written premission by Jeff Heaton.  Generally
// I will grant it.  Just ask first. 
//
// Basically I do not care how you distribute this code in compiled form.
// But if your going to publish my source code somewhere I'd like to hear
// about it first.
// ********************************************************************** //

// ErrorHandler V1.0
// Written 1/14/1999 by Jeff Heaton
//
// Associate text with Windows numeric error codes.
//
// This routine can be included in any project to provide a simple interface
// to the GetLastError() API call.  This routine will call GetLastError() 
// and then look up a text description assocated with that error.  An
// application specific error message can also be included.  This makes
// it very easy to look up all those numeric Windows error codes right in
// your program.

#include <windows.h>

// Function Name: ErrorHandler
// Parameters:
//		msg - Error message to display
// Returns:
//		Nothing.
// Purpose:
//		This function is used to report errors to the user.
// Author
//		Jeff Heaton
void ErrorHandler(char *msg)
{
	LPVOID lpMsgBuf;// The GetLastError error message
	char *complete;// Used to build complete error message
	
	
	FormatMessage( 
		FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM,    NULL,
		GetLastError(),MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), 
		(LPTSTR) &lpMsgBuf,    0,    NULL );

	complete = (char*)LocalAlloc( LMEM_FIXED,LocalSize(lpMsgBuf) + 2 + lstrlen(msg) );
	lstrcpy(complete,msg);
	lstrcat(complete,"\r\n");
	lstrcat(complete,(char*)lpMsgBuf);
	
	MessageBox( NULL, (const char *)complete, "Error", MB_OK|MB_ICONINFORMATION );
	LocalFree( lpMsgBuf );
	LocalFree( complete );
}