What is wrong here

Thanks

DECLARE INTEGER GetWindow IN win32api ;
INTEGER ncurr_window_handle, ;
INTEGER ndirection

DECLARE INTEGER GetWindowText IN win32api ;
INTEGER n_win_handle, ;
STRING @ cwindow_title, ;
INTEGER ntitle_length

DECLARE INTEGER EnumWindows IN win32api ;
INTEGER lpEnumFunc, ;
INTEGER lparam

ret = EnumWindows(EnumWindowsProc(), 0)


FUNCTION EnumWindowsProc(hwnd, lParam)
? hwnd
buffer = SPACE(255)
cWinCap = GetWindowText(hwnd, buffer, LEN(buffer))
RETURN 1
ENDFUNC