typedef struct tagRID_DEVICE_INFO_KEYBOARD {
    DWORD dwType;
    DWORD dwSubType;
    DWORD dwKeyboardMode;
    DWORD dwNumberOfFunctionKeys;
    DWORD dwNumberOfIndicators;
    DWORD dwNumberOfKeysTotal;
} RID_DEVICE_INFO_KEYBOARD, *PRID_DEVICE_INFO_KEYBOARD;