From: Wu Nan <i.wunan+rubymail@...>
Date: 2007-12-26T15:17:29+09:00
Subject: Change the MSN Now Playing Text with ruby

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Hi,

I just write a ruby program to change the MSN Now Playing Text,
however it's not working, could anybody check it for me that why it's not
working.

I also wrote it in VC, and it works well.


Here is the codes:
First VC:


#include "stdafx.h"
#include "windows.h"
#include <string.h>
#include <iostream>


int main(int argc, char* argv[])
{
    HWND msnui = NULL;
    COPYDATASTRUCT msndata;
    WCHAR * utf16buffer=L"\\0Music\\01\\0{Lalalalalalal}\\0\\0\\0\\0\\0<file://0Music//01//0%7BLalalalalalal%7D//0//0//0//0//0>
";
    msndata.dwData = 0x547;
    msndata.lpData = (void*)utf16buffer;
    msndata.cbData = lstrlenW(utf16buffer)*2+2;
    while (msnui = FindWindowEx(NULL, msnui, "MsnMsgrUIManager", NULL))
    {
         SendMessage(msnui, WM_COPYDATA, (WPARAM)NULL,(LPARAM)&msndata);
    }
    return 0;
}



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Then Ruby:

require 'Win32API'
require 'dl/import'
require 'dl/struct'

  module Win32
    extend DL::Importable

    dlload 'user32'

    CopyData = struct ["DWORD dwData","DWORD cbData","PVOID lpData",]

    WM_COPYDATA = 0x004a

  #extern "BOOL SendMessage(HWND, UINT, WPARAM, LPARAM)"
 findWindow=Win32API.new("user32.dll", "FindWindow", ['P','P'], 'N')
 Result=findWindow.call("MsnMsgrUIManager",0)


 str ="\\0Music\\01\\0{test}\\0\\0\\0\\0\\0<file://0Music//01//0%7Btest%7D//0//0//0//0//0>
"
 ostr = "\0" * 256
 multiByteToWideChar =Win32API.new
('kernel32','MultiByteToWideChar',['L','L','P','L','P','L'],'L')
 multiByteToWideChar.Call(0,0,str,-1,ostr,128)


 #t=(ostr.strip + "\0").unpack("S*").pack("U*")

 cds = CopyData.malloc
 cds.dwData = 0x547
 cds.cbData = 256
 cds.lpData = ostr

 SendMessage=Win32API.new("user32.dll", "SendMessage", ['L','L','L','P'],
'L')
 SendMessage.Call(Result, 0x004a, 0, cds.to_ptr)

  end

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