__declspec ClaimPort Close CwclComDatabase EnumUsedPorts GetOpened Open ReleasePort ~CwclComDatabase

ClaimPort() int ClaimPort ( unsigned long &  Port ) Tries to get the lowest COM port number that is not already in use. Parameters Port If the method completed with success on output contains the free COM port number. Returns If the function succeed the return value is WCL_E_SUCCESS. Otherwise the method returns one of the WCL error codes. Please note that this method does not create any serial device. This just makes you sure that no one other application and/or driver creates serial (COM) device with the same number.