#include once "windows.bi"

declare function        WinMain     ( byval hInstance as HINSTANCE, _
                                      byval hPrevInstance as HINSTANCE, _
                                      byval szCmdLine as zstring ptr, _
                                      byval iCmdShow as integer ) as integer


	end WinMain( GetModuleHandle( null ), null, Command( ), SW_NORMAL )

'':::::
function WndProc ( byval hWnd as HWND, _
                   byval wMsg as UINT, _
                   byval wParam as WPARAM, _
                   byval lParam as LPARAM ) as LRESULT

    function = 0

    select case( wMsg )
        case WM_CREATE
            exit function

        case WM_PAINT
            dim rct as RECT
            dim pnt as PAINTSTRUCT
            dim hDC as HDC

            hDC = BeginPaint( hWnd, @pnt )
            GetClientRect( hWnd, @rct )

            DrawText( hDC, _
            		  "Hello, World!", _
            		  -1, _
                      @rct, _
                      DT_SINGLELINE or DT_CENTER or DT_VCENTER )

            EndPaint( hWnd, @pnt )

            exit function

		case WM_KEYDOWN
			if( lobyte( wParam ) = 27 ) then
				PostMessage( hWnd, WM_CLOSE, 0, 0 )
			end if

        case WM_DESTROY
            PostQuitMessage( 0 )
            exit function
    end select

    function = DefWindowProc( hWnd, wMsg, wParam, lParam )

end function

'':::::
function WinMain ( byval hInstance as HINSTANCE, _
                   byval hPrevInstance as HINSTANCE, _
                   byval szCmdLine as zstring ptr, _
                   byval iCmdShow as integer ) as integer

    dim wMsg as MSG
    dim wcls as WNDCLASS
    dim hWnd as HWND

    function = 0

    with wcls
        .style         = CS_HREDRAW or CS_VREDRAW
		.lpfnWndProc   = cast( WNDPROC, @WndProc )
        .cbClsExtra    = 0
        .cbWndExtra    = 0
        .hInstance     = hInstance
        .hIcon         = LoadIcon( NULL, IDI_APPLICATION )
        .hCursor       = LoadCursor( NULL, IDC_ARROW )
        .hbrBackground = GetStockObject( WHITE_BRUSH )
        .lpszMenuName  = NULL
        .lpszClassName = @"HelloWin"
    end with

    if( RegisterClass( @wcls ) = FALSE ) then
        MessageBox( null, "Failed to register wcls", "Error", MB_ICONERROR )
        exit function
    end if

    hWnd = CreateWindowEx( 0, _
    			 		   @"HelloWin", _
                           "The Hello Program", _
                           WS_OVERLAPPEDWINDOW, _
                           CW_USEDEFAULT, _
                           CW_USEDEFAULT, _
                           CW_USEDEFAULT, _
                           CW_USEDEFAULT, _
                           NULL, _
                           NULL, _
                           hInstance, _
                           NULL )


    ShowWindow( hWnd, iCmdShow )
    UpdateWindow( hWnd )

    while( GetMessage( @wMsg, NULL, 0, 0 ) <> FALSE )
        TranslateMessage( @wMsg )
        DispatchMessage( @wMsg )
    wend

    function = wMsg.wParam

end function