Check the MSDN, "will cases where the application needs to use low level hooks, it should monitor raw input home. This is because raw input can asynchronously monitor the mouse and the rid_device_info_keyboard messages that are targeted for other threads more effectively than low level hooks can. For more information on raw input, see raw input."
[in the application needs to use lowlevelhooks in most cases, should be changed to monitor the row input method instead of, this is because the row input can more effectively than lowlevelhooks asynchronous monitor mouse and key messages sent to the other threads,]

validate the raw input is what the devil? Also has the property of the hook? If there is no hook feature, why can take the place of lowlevel hook? How to use this function? Baidu has no specific tutorial, beginners should learn from where these not commonly used API? MSDN only a theory, not enough! When their test to try to!