>It's the same control, but VB respond much better to events than VFP. Events are built-in in VB (you can even raise them) while it was an add-on in VFP (via VFPCOM).

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>Why would my VB activex control work any better than the MS control if vfp is the problem?

I'm using VFP5 and VB5. The MS comm control is version 5. It tells me it can only be single threaded. Is that a problem? Plus I don't
see the oncomm event listed as it shows in VFP.