Creates virtual serial port twin with non-standard name and allows replacing the value of FriendlyName and CompanyName (indicated by the license key) with alternative values.
Custom license key is needed to unlock this function. Otherwise it fails.
BOOL FtVspcCreateTwinPortEx( LPCTSTR lpszPortName, LPCTSTR lpszRealPortAlias, LPCTSTR lpszFriendlyName, LPCTSTR lpszCompanyName );
[in] The name of virtual serial port (e.g. "COM1", "VSP25", "SERPORT10" etc). Names "COM0", "COM4294967295" and "LPTx" are prohibited. It is recommended to use FtVspcCreateTwinPortByNum function for creating virtual serial ports with custom names (e.g. COMx).
[in] Alias name for existing COM port. You still will be able to open existing COM port using this alias name. The string is an MS-DOS path (e.g. PORT1, COM100).
[in] FriendlyName Value. If NULL – the value integrated into the license key is used. Can be set only if any FriendlyName is integrated into the license key, otherwise it fails with ftvspcErrorInvalidLicense error.
[in] Company name. If NULL - the value integrated into the license key is used. Can be set only if any FriendlyName is integrated into the key, otherwise it fails with ftvspcErrorInvalidLicense error.
TRUE - the port has been created successfully, FALSE otherwise.
|ftvspcErrorFailed||1||The operation has not been completed.|
|ftvspcErrorPortAlreadyExists||100||This port already exists.|
Port twin is an overlapped virtual serial port created over the physical serial port and existent only when the physical port exists.
Once created, port twin is available for enumeration by FtVspcEnumVirtual function but does not exist in the system (does not visible in the device manager). It appears in the system only if corresponding physical port appears. When physical port is removed from the system, port twin is removed too.
Port twin can be permanent. In this case it will be available for enumeration by FtVspcEnumVirtual function at each system startup and will exist in the system if corresponding physical port exists.