GetTickCount = disappearing menu

       if (GetKeyState('J') & 0x4000) 
        {
            if ((GetTickCount() - gInterface.Data[ePartyTimePANEL_MAIN].EventTick) < 500) {
                return;
            }
            gInterface.Data[ePartyTimePANEL_MAIN].EventTick = GetTickCount()...