From: gregarican <greg.kujawa@...>
Date: 2005-09-30T02:01:44+09:00
Subject: Re: Win32API question

PWR wrote:

> I am trying to use Ruby's Win32API interface to access the windows file
> i/o in order to make a serial port connection. However the code below
> gives the error '[BUG] Segmentation fault' when GetOverlappedResult()
> is called. Any ideas would be gratefully received.
....
> ReadFile = Win32API.new("Kernel32","ReadFile","LPLLP","N")
> WriteFile = Win32API.new("Kernel32","WriteFile","LPLLP","N")

Looking at a sample script I made that read/wrote to the serial port
using win32api my ReadFile and WriteFile calls were constructed
differently. Specifically:

WriteFile = Win32API.new("kernel32", "WriteFile", 'LPLPL', 'L')
ReadFile = Win32API.new("kernel32", "ReadFile", 'LPLPL', 'L')

Try using them constructed this way and see if things work...