glfw.py 文件源码

def get_window_user_pointer(window):
    '''
    Returns the user pointer of the specified window.

    Wrapper for:
        void* glfwGetWindowUserPointer(GLFWwindow* window);
    '''

    window_addr = ctypes.cast(ctypes.pointer(window),
                              ctypes.POINTER(ctypes.c_long)).contents.value

    if window_addr in _window_user_data_repository:
        data = _window_user_data_repository[window_addr]
        is_wrapped_py_object = data[0]
        if is_wrapped_py_object:
            return data[1]
    return _glfw.glfwGetWindowUserPointer(window)