Posted on May 17, 2011 at 14:10 Those 'ref' s look wrong. That would imply 'LPBYTE*' (a pointer to LPBYTE). A preallocated byte[] should suffice. IOW, just remove the 'ref' keyword from both definitions of the P/Invoke methods.
That definately solved the problem! Now the data looks like it is supposed to when I listen to the com-port. I dunno where I got the ref part from. Is there any good translation tables for datatypes somewhere?
Posted on May 17, 2011 at 14:10 There used to be a nice section on MSDN (cant recall URL). Else you can try pinvoke.net, but be warned, many examples are just plain wrong.
Well those are the ones I am trying to avoid ;) Anyway thanks for the help! Your advice and a driver update on my USB to ComPort adapter seemed to do the trick.
