FtVspcAttachByNum Function

Attaches to virtual COM port.

FTVSPCHANDLE FtVspcAttachByNum(
	UINT unPortNo,
	LPFNVSPCPORTEVENTS lpfnOnEvent,
	LONG_PTR Context 
	);

unPortNo

[in] COM port number (e.g. 5 means COM5).

lpfnOnEvent

[in] A pointer to the function to call on virtual serial port event (cannot be NULL). Refer to FtVspc_PortEvent.

Context

[in] User context (any value).

Handle of virtual serial port (0, if cannot attach to the port). This value is not system handle, it is internal Virtual Serial Port Control handle.

ftvspcErrorFailed	1	The operation has not been completed.
ftvspcErrorInvalidParameter	2	Invalid parameter.
ftvspcErrorNoSuchPort	101	There is no such port.
ftvspcErrorPortAttached	200	This port is already attached.
ftvspcErrorMarkedForDeletion	202	This port is marked for deletion.