Hi. I am writing a DLL application in C (using VC6) which calls external DLL functions. Some of those calls execute and return without a problem, but some others don't. When I say they don't return, I mean that either they don't return at all, or else they take a VERY long time to return (I have the code running as I write, and it hasn't returned yet.) Has anyone come across this issue before, or know what could be causing it? The function I am calling is low-level interacting with hardware.
Any help much appreciated.