由于项目之前使用libVLC制作的播放器没有全屏功能，现在需要添加全屏功能。而实现全屏功能后需要控件捕获鼠标消息。不做处理的话，鼠标消息会被vlc捕获！这里就需要VLC忽略掉鼠标消息！

所以，需在创建完媒体播放器后，调用 libvlc_video_set_key_input() 和 libvlc_video_set_mouse_input() 即可，这样 libVLC 就可以忽略键盘和鼠标事件了：

private  libvlc_media_player_t Create_MediaPlayer(libvlc_instance_t libvlc_instance, IntPtr handle)
        {
            libvlc_media_player_t libvlc_media_player = IntPtr.Zero;

            try
            {
                if (libvlc_instance == IntPtr.Zero ||
                    libvlc_instance == null ||
                    handle == IntPtr.Zero ||
                    handle == null)
                {
                    return IntPtr.Zero;
                }

                //创建播放器  
                libvlc_media_player = VlcMethods.libvlc_media_player_new(libvlc_instance);
                if (libvlc_media_player == null || libvlc_media_player == IntPtr.Zero)
                {
                    return IntPtr.Zero;
                }


                // 忽略事件处理
                VlcMethods.libvlc_video_set_key_input(libvlc_media_player, 0);
                VlcMethods.libvlc_video_set_mouse_input(libvlc_media_player, 0);

                //设置播放窗口              
                VlcMethods.libvlc_media_player_set_hwnd(libvlc_media_player, (int)handle);

                return libvlc_media_player;
            }
            catch
            {
                VlcMethods.libvlc_media_player_release(libvlc_media_player);

                return IntPtr.Zero;
            }
        }

使用之前导入函数：

//设置捕获键盘消息
            [DllImport("libvlc", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]
            public static extern void libvlc_video_set_key_input(libvlc_media_player_t p_mi, uint on);

            //设置捕获鼠标消息
            [DllImport("libvlc", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]
            public static extern void libvlc_video_set_mouse_input(libvlc_media_player_t p_mi, uint on);

参考：libVLC 捕捉鼠标事件（全屏/还原）-技术圈

VLC: LibVLC video controls