#prama once --vs-- #define

[MrDoomMaster]

The objective here is to be able to tell when a certain file is included.

For example, suppose we have a header file named MyClass.h. In Main.cpp, we want to check if MyClass.h is included, and if not... post an error.

If we use the C-Style #define approach, you do the following in MyClass.h:

#ifndef _MYCLASS_H_
#define _MYCLASS_H_

// All code here

#endif

Now, in Main.cpp, you simply check if the file is included by doing the following:

#ifndef _MYCLASS_H_
// post error to output window, forgot the exact command at the moment

Now if we use the C++ style, which is via the #pragma directive, I have no idea how you would be able to tell if a file was included or not.

In MyClass.h:

#prama once

In Main.cpp:

????

Any help? Thanks...