You can only truly multi-thread in vfp with a vfp mtdll. However, they only work with multi-threaded clients, like IIS. However, there are techniques that will do exactly what you want - see message #973643 .
>I would like to have two processes in the form that are reading different com ports. I dont have a problem reading port. But my problem is that I am using do while inside of the code that reads from a port. So when I start first process I cannot start the other. Any idea?
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>Thanks