Go look at the TTY example that comes with visual C++.  It shows how to use
the port correctly and not miss any characters.  What version of C++ are
you using?

Norm

At 07:18 PM 1/16/98 +0100, you wrote:
>hello everbody,
>
>my question is a little bit off topic (i gues)
>but maybe somebody can point me to the right location (list or newsgroup)
>
>i have a made a program (c++) witch reads data from the serial port
>a data device on com1 f.e. sends lots of data to my computer
>the big problem in win95 is, while i'm receiving data, my program is blocked
>(task switching) and when it receive's control, data is lost.
>how can i solve this problem.  i'm looking for some kind of blocking
>procedure
>to stop windows for task switching while my program receives data
>
>Kind Regards,
>Rob Aerts
>
>