Function _tkCall

code/graphics/graphics.py:196–207

(f, *args, **kw)

        _root.after(_POLL_INTERVAL, _tk_pump)

def _tkCall(f, *args, **kw):
    # execute synchronous call to f in the Tk thread
    # this function should be used when a return value from
    #   f is required or when synchronizing the threads.
    # call to _tkCall in Tk thread == DEADLOCK !
    if not _thread_running:
        raise GraphicsError, DEAD_THREAD
    def func():
        return f(*args, **kw)
    _tk_request.put((func,True),True)
    result = _tk_result.get(True)
    return result

def _tkExec(f, *args, **kw):
    # schedule f to execute in the Tk thread. This function does