window_handle();
Returns: Pointer
With this function you can get the internal Windows id value (a
pointer). This function is really only useful for extension
writers who need the window handle to call Win32 API's in
DLL code.
NOTE: This functions is for Windows and Mac OSX
only (on Mac OSX it contains a pointer to an NSWindow
class).
win_id = windows_handle();
The above code will store the game window id in a variable.