#include <stdio.h>
#include <windows.h>

void GetClipboardText ( char * buff )
{
    if ( OpenClipboard ( NULL ) )
    {
         HANDLE hData = GetClipboardData ( CF_TEXT );
         char * chBuffer = ( char * ) GlobalLock ( hData );
         strcpy ( buff, chBuffer );
         GlobalUnlock ( hData );
         CloseClipboard ( );
    }
}

int main ( int argc, char *argv [ ] )
{
    char buff[ 1024 ];
    GetClipboardText ( buff );
    printf ( "text in clipboard: %s\n\n", buff );

    while ( 1 )
    {
         char temp[ 1024 ];
         GetClipboardText ( temp );

         if ( strcmp ( buff, temp ) != 0 )
         {
              printf ( "new text in clipboard: %s\n\n", temp );
              wsprintf ( buff, "%s", temp );
         }
         Sleep ( 500 );
    }
    getchar ( );
    return 0;
}