Doubt in the Following Coding

hi 
  I am very new to the vc++ and i have came across the following coding 

#include <stdafx.h>
#include <MainFrm.h>

void CMainFrame :: OnWindowCreate()
{

  CFrameWnd wnd1;

CRect r1(10,10,400,300);
wnd1.Create("User Window","User Window",WS_CHILD|WS_VISIBLE|WS_CAPTION,r1);
wnd1.ShowWindow(1);


} 

i am not able to get the MainFrm.h header file reference and i am not sure about the following program help or the exact resources will be appreciated 


Thanks & Regards 
S.Sakthi 



      See the Web&#39;s breaking stories, chosen by people like you. Check out Yahoo! Buzz. http://in.buzz.yahoo.com/

[Non-text portions of this message have been removed]



------------------------------------

Yahoo! Groups Links

<*> To visit your group on the web, go to:
    http://groups.yahoo.com/group/wtl/

<*> Your email settings:
    Individual Email | Traditional

<*> To change settings online go to:
    http://groups.yahoo.com/group/wtl/join
    (Yahoo! ID required)

<*> To change settings via email:
    mailto:[email protected] 
    mailto:[email protected]

<*> To unsubscribe from this group, send an email to:
    [email protected]

<*> Your use of Yahoo! Groups is subject to:
    http://docs.yahoo.com/info/terms/