= Description
   This is a drop-in replacement for the Win32API library currently part of
   Ruby's standard library.
	
= Synopsis
   require 'win32/api'
   include Win32
   
   # Typical example - Get user name
   buf = 0.chr * 260
   len = [buf.length].pack('L')
   
   GetUserName = API.new('GetUserName', 'PP', 'I', 'advapi32')
   GetUserName.call(buf, len)
   
   puts buf.strip
   
   # Callback example - Enumerate windows
   EnumWindows     = API.new('EnumWindows', 'KP', 'L', 'user32')
   GetWindowText   = API.new('GetWindowText', 'LPI', 'I', 'user32')
   EnumWindowsProc = API::Callback.new('LP', 'I'){ |handle, param|
      buf = "\0" * 200
      GetWindowText.call(handle, buf, 200);
      puts buf.strip unless buf.strip.empty?
      buf.index(param).nil? ? true : false
   }
   
   EnumWindows.call(EnumWindowsProc, 'UEDIT32')
   
   # Raw function pointer example - System beep
   LoadLibrary    = API.new('LoadLibrary', 'P', 'L')
   GetProcAddress = API.new('GetProcAddress', 'LP', 'L')
 
   hlib = LoadLibrary.call('user32')
   addr = GetProcAddress.call(hlib, 'MessageBeep')
   func = Win32::API::Function.new(addr, 'L', 'L')
   func.call(0)
   
= Differences between win32-api and Win32API
   * This library has callback support
   * This library supports raw function pointers.
   * This library supports a separate string type for const char* (S).
   * Argument order change. The DLL name is now last, not first.
   * Removed the 'N' and 'n' prototypes. Always use 'L' for longs now.
   * Sensible default arguments for the prototype, return type and DLL name.
   * Reader methods for the function name, effective function name, prototype,
     return type and DLL.
   * Removed the support for lower case prototype and return types. Always
     use capital letters.
   
= Developer's Notes
   The current Win32API library that ships with the standard library has been
   slated for removal from Ruby 2.0 and it will not receive any updates in the
   Ruby 1.8.x branch. I have far too many libraries invested in it to let it
   die at this point.
   
   In addition, the current Win32API library was written in the bad old Ruby
   1.6.x days, which means it doesn't use the newer allocation framework.
   There were several other refactorings that I felt it needed to more closely
   match how it was actually being used in practice.
   
   The first order of business was changing the order of the arguments. By
   moving the DLL name from first to last, I was able to provide reasonable
   default arguments for the prototype, return type and the DLL. Only the
   function name is required now.
   
   There was a laundry list of other refactorings that were needed: sensical
   instance variable names with proper accessors, removing support for lower
   case prototype and return value characters that no one used in practice,
   better naming conventions, the addition of RDoc ready comments and,
   especially, callback and raw function pointer support.
   
   Most importantly, we can now add, modify and fix any features that we feel
   best benefit our end users.

= Documentation
   The source file contains inline RDoc documentation. If you installed
   this file as a gem, then you have the docs. Run "gem server" and point
   your browser at http://localhost:8808 to see them.
   
= Warranty
   This package is provided "as is" and without any express or
   implied warranties, including, without limitation, the implied
   warranties of merchantability and fitness for a particular purpose.
   
= Known Issues
   Possible callback issues when dealing with multi-threaded applications.
   We are working on this for the next 1.2.x release.
   
   Please submit any bug reports to the project page at
   http://www.rubyforge.org/projects/win32utils.

= Copyright
   (C) 2003-2009 Daniel J. Berger
   All Rights Reserved

= License
   Artistic 2.0

= Authors
   Daniel J. Berger
   Park Heesob