Function xnRegisterToUserExit

Source/OpenNI/XnOpenNI.cpp:5488–5520

}

XN_C_API XnStatus xnRegisterToUserExit(XnNodeHandle hInstance, XnUserHandler handler, void* pCookie, XnCallbackHandle* phCallback)
{
	XN_VALIDATE_INTERFACE_TYPE(hInstance, XN_NODE_TYPE_USER);
	XN_VALIDATE_OUTPUT_PTR(phCallback);
	XnUserGeneratorInterfaceContainer* pInterface = (XnUserGeneratorInterfaceContainer*)hInstance->pModuleInstance->pLoaded->pInterface;
	XnModuleNodeHandle hModuleNode = hInstance->pModuleInstance->hNode;

	UserSingleCookie* pRegCookie;
	XN_VALIDATE_ALLOC(pRegCookie, UserSingleCookie);
	pRegCookie->handler = handler;
	pRegCookie->hNode = hInstance;
	pRegCookie->pUserCookie = pCookie;

	XnStatus nRetVal = XN_STATUS_OK;
	if (pInterface->User.RegisterToUserExit != NULL)
	{
		nRetVal = pInterface->User.RegisterToUserExit(hModuleNode, xnModuleUserSingle, pRegCookie, &pRegCookie->hCallback);
	}
	else
	{
		// Versions before 1.3.2 didn't have this API. Fabricate it.
		nRetVal = pInterface->User.RegisterUserCallbacks(hModuleNode, NULL, xnModuleUserSingle, pRegCookie, &pRegCookie->hCallback);
	}
	if (nRetVal != XN_STATUS_OK)
	{
		xnOSFree(pRegCookie);
		return (nRetVal);
	}

	*phCallback = pRegCookie;

	return XN_STATUS_OK;
}
XN_C_API void xnUnregisterFromUserExit(XnNodeHandle hInstance, XnCallbackHandle hCallback)
{
	XN_VALIDATE_INTERFACE_TYPE_RET(hInstance, XN_NODE_TYPE_USER, );