A variable of any data type, except of type structure, representing the result of an operation that PV-WAVE, as a server, has performed.
Standard Library function that allows PV-WAVE to return a value or values that it has calculated to an external routine written in C.
A variable of any data type, except of type structure, representing the result of an operation that PV-WAVE, as a server, has performed.
A number indicating the status of the reply operation. A return value of -1 indicates an error. Errors can also be trapped by the ON_IOERROR routine.
If present and nonzero, causes UNIX_REPLY to return the modified parameters to the client. The number of parameters to be sent back is the same as the number that came in with UNIX_LISTEN. This number is tracked internally by PV-WAVE.
For more information and an example, see the PV-WAVE GUI Application Developer's Guide.
