Question

For a sample program, though this is doing all good for me. But I was wondering how is it happening.

I created a console application with “MFC” checkbox enabled while creating the project (VC2008).
It created standard _tmain implementaion with AfxWinInit calls and all. Then I wrote my custom function Main and called it from _tmain itself.

Now as soon as press F10 or F11 to START debugging, it goes into Main and not _tmain (yes, via _tmain itself) – How and Why – that’s the question.

No I didn’t set any project setting at all. this is about 32-bit Debug build.

EDIT: The interesting thing is this:

#include "stdafx.h"

void Main()
{
    printf("This is custom main");
}

int _tmain(int argc, _TCHAR* argv[])
{
    if(false) // Getting fooled, or fooling us?
        Main();

    return 0;
}

Visual Studio considers Main as entry point, and doesn’t do anything when I start debugging with F10/F11 – since false is false and doesn’t allow Main to be called!

Answer 1

My test shows it goes to _tmain first, before custom Main.