提前。 我还是把那些原话打出来，大家分析分析。 The WH_MSGFILTER and WH_SYSMSGFILTER hooks enable you to perform messages filtering during modal loops that is equivalent to the filtering done in the main message loop. For example, an application often examines a new message in the main loop between the time it retrieves the message from the queue and the time it dispatches the message, performing special processing as appropriate. However ,during a modal loop the system retrieves and dispatches messages without allowing an application the chance to filter the messages in its main message loop. If an application installs a WH_MSGFILTER or WH_SYSMSGFILTER hook procedure, the system calls the procedure during the modal loop.根据我的拦截，我发现一个undocumented消息，具体的数值是280（$118)，哪位知道这是个什么消息？
我还是把那些原话打出来，大家分析分析。
The WH_MSGFILTER and WH_SYSMSGFILTER hooks enable you to perform messages filtering during modal loops that is equivalent to the filtering done in the main message loop. For example, an application often examines a new message in the main loop between the time it retrieves the message from the queue and the time it dispatches the message, performing special processing as appropriate. However ,during a modal loop the system retrieves and dispatches messages without allowing an application the chance to filter the messages in its main message loop. If an application installs a WH_MSGFILTER or WH_SYSMSGFILTER hook procedure, the system calls the procedure during the modal loop.根据我的拦截，我发现一个undocumented消息，具体的数值是280（$118)，哪位知道这是个什么消息？
学个东西不容易啊。