Functions

API Control
FtVspcApiClose	Closes API and clears all data. You should call it once at the end of using the API.
FtVspcApiInit	Initializes API. You should call it once at the beginning before using the API.
FtVspcApplyKey	Apply a new license key. The previously applied key will be replaced with lpszLicenseKey.
Port Enumeration
FtVspcEnumPhysical	Refreshes information about physical serial ports (or third-party virtual serial ports) and returns their number.
FtVspcEnumVirtual	Refreshes information about virtual serial ports and returns their number.
FtVspcGetPhysical	Retrieves the name of physical serial port by index.
FtVspcGetPhysicalNum	Retrieves the number of physical serial port by index.
FtVspcGetVirtual	Retrieves virtual serial port name by index.
FtVspcGetVirtualNum	Retrieves virtual serial port number by index.
Creating and Removing Ports
FtVspcCreatePort	Creates virtual serial port with non-standard name.
FtVspcCreatePortEx	Creates virtual serial port with non-standard name and allows replacing the value of FriendlyName and CompanyName (indicated by the license key) with alternative values.
FtVspcCreatePortByNum	Creates virtual serial port.
FtVspcCreatePortOverlapped	Creates virtual serial port with non-standard name over existing COM port.
FtVspcCreatePortOverlappedEx	Creates virtual serial port with non-standard name over existing COM port and allows replacing the value of FriendlyName and CompanyName (indicated by the license key) with alternative values.
FtVspcCreatePortOverlappedByNum	Creates virtual serial port over existing COM port.
FtVspcCreateTwinPort	Creates virtual serial port twin with non-standard name.
FtVspcCreateTwinPortEx	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.
FtVspcCreateTwinPortByNum	Creates virtual serial port twin.
FtVspcRemovePort	Removes a virtual serial port with non-standard name.
FtVspcRemovePortByNum	Removes a virtual serial port.
Attaching to the Port
FtVspcAttach	Attaches to virtual serial port with non-standard name.
FtVspcAttachByNum	Attaches to virtual COM port.
FtVspcDetach	Detaches from virtual serial port.
Managing Port Properties
FtVspcGetPermanent	Retrieves value of Permanent flag for virtual serial port with non-standard name.
FtVspcGetPermanentByNum	Retrieves value of Permanent flag.
FtVspcGetPortType	Retrieves value of virtual serial port type with non-standard name.
FtVspcGetPortTypeByNum	Retrieves value of virtual serial port type.
FtVspcGetQueryOpen	Retrieves value of QueryOpen flag for virtual serial port with non-standard name.
FtVspcGetQueryOpenByNum	Retrieves value of QueryOpen flag.
FtVspcSetPermanent	Sets value of Permanent flag for virtual serial port with non-standard names.
FtVspcSetPermanentByNum	Sets value of Permanent flag.
FtVspcSetQueryOpen	Sets value of QueryOpen flag for virtual serial port with non-standard names.
FtVspcSetQueryOpenByNum	Sets value of QueryOpen flag.
Reading/Writing Data
FtVspcRead	Reads data from the port.
FtVspcWrite	Writes data to the port.
Managing Serial Port Signals
FtVspcGetBitrateEmulation	Retrieves the state of bitrate emulation flag.
FtVspcGetBreak	Retrieves the state of Break error.
FtVspcGetCts	Retrieves the state of CTS signal.
FtVspcGetDcd	Retrieves the state of DCD signal.
FtVspcGetDsr	Retrieves the state of DSR signal.
FtVspcGetFraming	Retrieves the state of Framing error.
FtVspcGetInQueueBytes	Retrieves the number of bytes in buffer.
FtVspcGetOverrun	Retrieves the state of Overrun error.
FtVspcGetParity	Retrieves the state of Parity error.
FtVspcGetRing	Retrieves the state of RING signal.
FtVspcSetBitrateEmulation	Sets the state of bitrate emulation flag.
FtVspcSetBreak	Sets the state of Break error.
FtVspcSetCts	Sets the state of CTS signal.
FtVspcSetDcd	Sets the state of DCD signal.
FtVspcSetDsr	Sets the state of DSR signal.
FtVspcSetFraming	Sets the state of Framing error.
FtVspcSetOverrun	Sets the state of Overrun error.
FtVspcSetParity	Sets the state of Parity error.
FtVspcSetRing	Sets the state of RING signal.
Other
FtVspcGetErrorMessage	Retrieves the error code description.
FtVspcGetInfo	Retrieves information about the program version and license type.
FtVspcGetLastError	Returns last error code for the latest operation.