- Get a handle for a port
int cxOutputPortOpen(const char *portname)
integer function cxOutputPortOpen( portname )
character *(*) portname
Name of the output port to open.
converts an output port name into an integer port handle to be used on all
subsequent port calls.
The port name is typically a short name describing the
purpose of the port, such as colormap or volume.
If the given name does not refer to an existing port, a -1 is returned.
The name of the port is the one that was entered into the ``Output
Ports'' form in the module builder.
The same name appears in the I/O list menu for the module in the
No particular interpretation should be placed on the values of the
integer returned by this function, though typically it will be
a small integer.
Last modified: Mon Nov 6 16:33:32 GMT 2000
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© The Numerical Algorithms Group Ltd, Oxford UK. 1996