如何截获键盘信息：先编译LaunchDLL，然后把LaunchDLL.h和LaunchDLL.lib复制到KeyHook工程目录中，LaunchDLL.dll复制到Debug目录-Intercepting keyboard: first compiled LaunchDLL, then LaunchDLL.h, and LaunchDLL.lib copy to KeyHook project directory LaunchDLL.dll copied to the Debug directo