hi. i'm new in doing this. i've written a set of codes in CodeWarrior using C++ intending to transmit data out from my PDA (PAlmIIIx) via serial communication but it doesn't work. What's wrong? class dish { private: string identity; public: dish(string orderId); string getIdentity(); }; dish :: dish(string orderId) { identity = orderId; } string dish :: getIdentity() { return identity; } static Boolean MainFormHandleEvent(EventPtr eventP) { Boolean handled = false; FormPtr frmP; string tableNumber, toSend; toSend[4] = '|'; switch (eventP->eType) { case frmOpenEvent: frmP = FrmGetActiveForm(); MainFormInit (frmP); FrmDrawForm (frmP); handled = true; tableNumber = "0001|"; case ctlSelectEvent: switch (eventP->data.ctlSelect.controlID) { case MainChickenButton: dish Chicken(ChickenId); toSend = Chicken.getIdentity(); break; case MainBeefButton: dish Beef(BeefId); toSend = Beef.getIdentity(); break; case MainOkButton: static Err OpenSerial(void); static void WriteSerial(void); static void CloseSerial(void); FrmGotoForm (TQDialog); handled = true; break; } tableNumber += toSend; case frmCloseEvent: MainFormDeinit(FrmGetActiveForm()); break; default: break; } return handled; } /*Opening Serial Port*/ static Err OpenSerial (void) { #define serPortLocalHotSync 0x8000 UInt16 portID; Err error; Boolean serPortOpened = false; //srmOpen(port identifier, baud rate, pointer to a variable to //receiver portID) error = SrmOpen(serPortLocalHotSync, 9600, &portID); if (error) { //Displays error message if error occurs ErrNonFatalDisplayIf(error == serErrBadPort, "serErrBadPort"); } return serPortOpened; } /*Closing Serial Port*/ static void CloseSerial (void) { Err error; #define portID 0x8000 //Defines portID as serPortLocalHotSync 0x8000 //Waits until all data in the transmit queue has been sent and then // only exit the application. error = SrmSendWait(portID); SrmClose(portID); if (error) { //Displays error message if error occurs. ErrNonFatalDisplayIf(error == serErrBadPort, "srmClose : BadPort"); } } /*Sending Data*/ static void WriteSerial (void) { string tableNumber, numSent; Err error; numSent = SrmSend(portID, &tableNumber, 256, &error); }