The virtual terminal APIs allow your iSeries(TM) application programs to interact with an iSeries server that is performing work station input/output (I/O).
A virtual terminal is a device that does not have hardware associated with it. It forms a connection between your application and iSeries applications, representing a physical work station (possibly on a remote system). The i5/OS(TM) licensed program manages the virtual terminal, which directs work station I/O performed by an iSeries application to the virtual terminal. The virtual terminal APIs allow another iSeries application, called a server program, to work with the data associated with the virtual terminal.
In a distributed systems environment, the requesting program is called a client; the answering program is called a server. The client and server programs may reside on the same system or may be distributed between two different systems. The server program generally runs on behalf of (or in conjunction with) the client program. Together, the server program and the client program allow a work station to be supported as if the work station were connected locally.
You must specify a work station type when a virtual terminal device is opened. A server program can select several different types of work stations. See the Open Virtual Terminal Path (QTVOPNVT) API for a list of the types of work stations that are supported.
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The virtual terminal APIs are:
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