lastWin32ErrorMessage(# :nodoc:)
public
Following code is based on David Garamond’s GUID library for Ruby.
# File activesupport/lib/active_support/secure_random.rb, line 186
def self.lastWin32ErrorMessage # :nodoc:
get_last_error = Win32API.new("kernel32", "GetLastError", '', 'L')
format_message = Win32API.new("kernel32", "FormatMessageA", 'LPLLPLPPPPPPPP', 'L')
format_message_ignore_inserts = 0x00000200
format_message_from_system = 0x00001000
code = get_last_error.call
msg = "\0" * 1024
len = format_message.call(format_message_ignore_inserts + format_message_from_system, 0, code, 0, msg, 1024, nil, nil, nil, nil, nil, nil, nil, nil)
msg[0, len].tr("\r", '').chomp
end