Greetings George

>
>Let me check my code at home. If WriteFile() is returning 1 then it's succeeding. If I understood your previous post correctly, then the problem with opening the port isn't a problem.

okydoke


>
>BTW, you asked about the #DEFINE statements earlier. These are defined constants. Their purpose is to make the code more readable. GENERIC_READ is a lot easier to understand than 0x80000000.

why is it they don't show up in the debugger under their variable name?

Harry