require 'win32/api'
require 'cstruct/win32struct'

include Win32

WS_VISIBLE      = 0x10000000
WS_CAPTION      = 0x00C00000
WS_SYSMENU      = 0x00080000
WS_MINIMIZEBOX  = 0x00020000
WS_MAXIMIZEBOX  = 0x00010000
WS_THICKFRAME   = 0x00040000
WS_OVERLAPPED   = 0x00000000

WS_OVERLAPPEDWINDOW = (WS_OVERLAPPED | WS_CAPTION | WS_SYSMENU | WS_THICKFRAME | WS_MINIMIZEBOX | WS_MAXIMIZEBOX)

WM_CREATE       = 0x0001
WM_DESTROY      = 0x0002
WM_PAINT        = 0x000F
WM_CLOSE        = 0x0010
WM_COMMAND      = 0x0111

CS_VREDRAW      = 0x0001
CS_HREDRAW      = 0x0002
COLOR_WINDOW    = 5

CW_USEDEFAULT   = -2147483648 #0x80000000

SW_SHOW         = 5
SW_SHOWDEFAULT  = 10

Memset          = API.new('memset', 'PLL', 'L', 'msvcrt')
LocalAlloc      = API.new('LocalAlloc', 'LL', 'L', 'kernel32')
GetModuleHandle = API.new('GetModuleHandle', 'P', 'L', 'kernel32')
RegisterClass   = API.new('RegisterClass', 'P', 'L', 'user32')
RegisterClassEx = API.new('RegisterClassEx', 'P', 'L', 'user32')
CloseWindow     = API.new('CloseWindow', 'L', 'B', 'user32')
CreateWindowEx  = API.new('CreateWindowEx', 'LPPLIIIILLLL', 'L', 'user32')
ShowWindow      = API.new('ShowWindow', 'LL', 'B', 'user32')
UpdateWindow    = API.new('UpdateWindow', 'L', 'B', 'user32')
BeginPaint      = API.new('BeginPaint', 'LP', 'L', 'user32')
EndPaint        = API.new('EndPaint', 'LP', 'L', 'user32')
PostQuitMessage = API.new('PostQuitMessage', 'I', 'V', 'user32')
DefWindowProc   = API.new('DefWindowProc', 'LLLL', 'L', 'user32')
GetMessage      = API.new('GetMessage', 'PLII', 'L', 'user32')
DispatchMessage = API.new('DispatchMessage', 'P', 'L', 'user32')
TranslateMessage = API.new('TranslateMessage', 'P', 'B', 'user32')
TextOut         = API.new('TextOut', 'LLLPL', 'B', 'gdi32' );

class POINT  0)
        TranslateMessage.call(msg.data)
        DispatchMessage.call(msg.data)
    end

end

def main
    instance = GetModuleHandle.call(0)
    WinMain instance, SW_SHOW
end

main