ReadFile freezing

I have a pipe which i'm reading from with ReadFile()...everything is fine as long as there is data in the pipe, but if the writing function never puts data in the pipe, ReadFile() never returns and leaves the program hanging.  How can I stop ReadfFile from doing this or test to see if there is data in the pipe

P.S. I'm using VC++ 5 under win95
openGLAsked:
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ylCommented:
You can use the PeekNamedPipe function to determine if there is data to be read from the pipe.
Alternately you can use overlapped i/o by using the FILE_FLAG_OVERLAPPED in the pipe creation in CreateNamedPipe. In that case the ReadFile operation will perform asynchronously and will return immediately if there is nothing to read.
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