What file (.dll, .lib, etc) is WinMain() in??

But what's the lib?

MSVCRT.LIB for release and MSVCRTD.LIB for Debug versions

Also see the comment in VC98\CTR\SRC\crtexe.c file

How can I verify that WinMain() is in those LIBs?  Do you know of a LIB viewer?  Also, I don't appear to have the crtexe.c file.

So Appmodul.cpp and Winmain.cpp get compiled and linked every time in an MFC application?  They aren't already precompiled into a lib file somewhere?

I think they are precompiled ( see above ).
Get linked every time

Yashik,
Thes functions are not exported in MSVCRT.lib. This lib is for C Runtime. For MFC's function, its in MFC42 libs.

tdubroff,
Gointo MFC/lib folder. And on command line use dumpbin utulity to see what all is exported from this lib. You will see all the MFC classes are there. And there you will find AfxWinMain etc..

dumpbin /exports MFC42.lib

Oops, my mistake.
naveenkohli, thanks

This is good information.  Where is WinMain though, or _tWinMain?  What lib file did AfxModul.cpp get compiled into?

This is good information.  But where is WinMain, or _tWinMain?  What lib file did AfxModul.cpp get compiled into?

If you dump MFC42.lib, you will find reference to AfxWinMain. Thats what MFC calls into..

          1576    ?AfxWinMain@@YGHPAUHINSTANCE__@@0PADH@Z (int __stdcall AfxWinMain(struct HINSTANCE__ *,struct HINSTANCE__ *,char *,int))

Right, I understand that WinMain just calls AfxWinMain.  And WinMain is actually _tWinMain which is in the AfxModul.cpp file.  But I want to know where WinMain (or _tWinMain) not AfxWinMain.  So the question has become what lib file did AfxModul.cpp get compiled into?

Read the documentation for CWinApp. This will tell you how WinMain gets called...

WinMain is an entry point for all Windows applications. So your application has to provide this entry point. In MFc apps, this work is done by the CWinApp class. It implements this entry point on your behalf. Like in console apps, you have entry point as main. in GUI apps you have WinMain. So it is implemented by your application. So MFC42.lib has the export for AfxWinMain. And this AfxWinMain resides in AFXMODUL.cpp. So this function gets compiled into MFC42 lib.

I would strongly recommend that you read the documentation about this entry point and also CWinApp.

Okay, here is what I know so far:

1) It is AppModul.cpp which contains _tWinMain.  This name is just a pseudonym for WinMain and all this function does is call AfxWinMain.

2) AfxWinMain is located in WinMain.cpp.

3) CWinApp is used by AfxWinMain.  The programmer can override methods in CWinApp to effectively change the functionality of AfxWinMain.  But CWinApp does not provide AfxWinMain, ie, CWinApp does not have a member function that is AfxWinMain.

4) Nowhere in my default MFC application does WinMain appear.  This makes sense because it is compiled/linked in via AfxWinMain...and we know AfxWinMain is called by WinMain.

So, the question still remains.  What lib file is WinMain located in??  Since we know WinMain is part of AppModul.cpp, the question becomes: What lib file did AppModul.cpp get compiled into?

It is right in your own MFC application. Win32 does not implement it for you. You have to implement it. Its the entry point that OS looks for in your executable. Its just like "main" in your console application. Like you have to provide the main funvtion. Similarly GUI application has to provide WinMAin. And it has already been done in MFC lib.
AppModul.cpp file gets compiled into MFC42 DLL&LIB. Dump the exports of MFC42.lib and see that it has all the functions that AppModul.cpp defines.

Okay, so you are saying WinMain is in MFC42.lib and it doesn't appear with dumpbin.exe because it is never 'exported' anywhere?

WinMain is not exported anywhere. This is the entry point that your application has to provide. Whenever you compile an application, compiler writes an entry point into the binary image. For Windows apps, this entry point is WinMain. So when you try to execute a Windows app, runtime checks with EXE file about the entry point that has been specified. So AfxWinMain has provided the entry point as _tWinMain. Which is nothing but typedefd as WinMain. SO in no lib you will find the export for this function because every application has to provide this function. I would suggest that you look at the good old way of writing Win32 apps. The first function you will find in those samples is WinMain. Then it will be more clear to you where this function is....

Obviously WinMain is provided for me in the file AppModul.cpp.  In fact if I place a breakpoint on this function in this file, my skeletal MFC AppWizard application will break there.  So there is WinMain.  It is in AppModul.cpp.  I didn't provide it.  MFC did.

However, I do not think that Visual Studio compiles this file every time for every custom application created.  Rather I think it is already precompiled and is in either a lib or dll file.  Perhaps I am wrong here; I don't know.