你所说的例程一定是这个吧:the routine that handles messages for the window
When an application creates a window, it registers a window procedure with the Windows kernel. The window procedure is the routine that handles messages for the window. Traditionally, the window procedure contains a huge case statement with entries for each message the window has to handle. Keep in mind that 搘indow?in this sense means just about anything on the screen: each window, each control, and so on. Every time you create a new type of window, you have to create a complete window procedure.
这个例程是什么意思?