#define CVT_GAME_ORDER_ADDR  cvt_GetGameOrderAddr()


UINT16 (UINT16 index)
{
    UINT16 game;MainMenu_SetGameFromBootCodeIndex
    switch(index)
    {
        case 1:
            game = GAME_BOWLING;
        break;
        case 3:
            game = GAME_TENNIS;
        break;
        case 2:
            game = GAME_TABLETENNIS;
        break;
        case 4:
            game = GAME_DART;
        break;
        case 5:
            game = GAME_TRAMPONLINE;
        break;
        default:
            game = GAME_BOWLING;
        break;
    }
    return game;
}


MenuFlag = MainMenu_SetGameFromBootCodeIndex(CVT_GAME_ORDER_ADDR);



请问上面代码中 UINT16 game;MainMenu_SetGameFromBootCodeIndex 是什么意思
CVT_GAME_ORDER_ADDR的意义