From: Park Heesob <heesobpark@...>
Date: 2002-04-14T18:31:25+09:00
Subject: Re: Displaying gif or jpg files using Win32API?

----- Original Message ----- 
From: "Michael Davis" <mdavis@sevainc.com>
To: "ruby-talk ML" <ruby-talk@ruby-lang.org>
Sent: Sunday, April 14, 2002 2:12 AM
Subject: Displaying gif or jpg files using Win32API?


> Has anyone successfully displayed a gif or jpg using Win32API?  Has 
> anyone created a C extension for Ruby that will display a gif or jpg?  I 
> have been trying, unsuccessfully, to do this using various C++ and VB 
> examples.
> 

Hi,

Here is one solution.

require 'Win32API'
HlinkNavigateString = Win32API.new("urlmon","HlinkNavigateString",['P','P'],'L')
MultiByteToWideChar = Win32API.new("kernel32","MultiByteToWideChar",['L','L','P','L','P','L'],'L')
str = 'c:\Program Files\FlashGet\Skin\TestBk.jpg'
ostr = "\0" * 256
MultiByteToWideChar.Call(0,0,str,str.length+1,ostr,128);
HlinkNavigateString.Call(0,ostr)

It works on Windows XP.

Park Heesob

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