From: Heesob Park <phasis@...>
Date: 2009-12-30T15:30:42+09:00
Subject: Re: au3 0.1.1 released

Hi,

2009/12/29 Marvin Gülker <sutniuq@gmx.net>:
> Thank you, Edward, that helped me out a lot. :)
> My code now looks like this (to simplify this for the moment, I sticked
> to the non-unicode variant):
> ---------------------------------
> #Encoding: UTF-8
> require "win32/api"
> GetLastError = Win32::API.new("GetLastError", '', 'I', "kernel32")
> SendInput = Win32::API.new("SendInput", 'IPI', 'I', "user32")
> #Needed for the KEYBDINPUT struct's last parameter
> GetMessageExtraInfo = Win32::API.new("GetMessageExtraInfo", '', 'P',
> "user32")
> INPUT_KEYBOARD = 1
> KEY_A = 0x41
> #KEYEVENTF_UNICODE = 0x0004
>
> input = [
>  INPUT_KEYBOARD,
>  KEY_A,
>  0,
>  0,
>  0,
>  GetMessageExtraInfo.call
> ].pack('issiiP')
>
> #While the program pauses, I click into an editor window
> #to see wheather I get the 'a' or not.
> sleep 3
>
> SendInput.call(1, input, input.size)
> p GetLastError.call
> ---------------------------------
> I'm using Ruby 1.9.1-p243 at the moment (will update to -p376 soon), but
> I've checked that Array#pack returns a BINARY-encoded string, so there
> shouldn't occur a problem. Nevertheless, I get error code 87, what means
> "One of the parameters was invalid.". I suppose it's the C array I don't
> provide, even if it contains only one element. Do you know how to build
> up one?
>
For Future Reference, here is a working code.

--------------------------------------------------------------------------
#Encoding: UTF-8
require "win32/api"
GetLastError = Win32::API.new("GetLastError", '', 'I', "kernel32")
SendInput = Win32::API.new("SendInput", 'IPI', 'I', "user32")
#Needed for the KEYBDINPUT struct's last parameter
GetMessageExtraInfo = Win32::API.new("GetMessageExtraInfo", '', 'P', "user32")
INPUT_KEYBOARD = 1
KEY_A = 0x0061   # unicode for 'a'  cf. 0x00E4 for 'ä'
KEYEVENTF_UNICODE = 0x0004
KEYEVENTF_KEYUP = 0x0002

#While the program pauses, I click into an editor window
#to see wheather I get the 'a' or not.
sleep 3

#key down
input = [
 INPUT_KEYBOARD,
 0,
 KEY_A,
 KEYEVENTF_UNICODE,
 0,
 nil
].pack('issiiP') + 0.chr * 8  # 8bytes dummy to make 28bytes
SendInput.call(1, input, input.size)

# key up
input = [
 INPUT_KEYBOARD,
 0,
 KEY_A,
 KEYEVENTF_UNICODE|KEYEVENTF_KEYUP,
 0,
 nil
].pack('issiiP') + 0.chr * 8
SendInput.call(1, input, input.size)
----------------------------------------------------------------

Regards,

Park Heesob