医院排队就诊叫号系统一小模块，详细功能:医院排队就诊叫号系统一小模块-Hospital queues No. medical system called a small module, the detailed functions: hospital visits queuing system is called a small module No.

Windows程序运行原理及程序编写流程，窗口产生过程，句柄原理，消息队列，回调函数-Windows programs running principle and programming process, the the window generation process, handle principle, message queues, the callback function