VistaIO Version 1.2.14
4 April 1995
VistaIOReadEdges - read a series of edge sets from a stream
#include <stdio> #include <vistaio.h> #include <vistaio.h>
int VistaIOReadEdges (file, attributes, edge_sets)
FILE *file; VistaIOAttrList *attributes; VistaIOEdges (*edge_sets);
|file||Specifies the open stream from which the edge sets should be read.|
|attributes||Returns a list of attributes read from the stream.|
|edge_sets||Returns a vector of pointers to edge sets read.|
VistaIOReadEdges reads a Vista data file from an open stream, collects the top-level edge sets found, and returns the edge sets separately from the file’s other contents.
VistaIOReadEdges returns the number of edge sets obtained, or 0 if an error is encountered. A vector of the edge sets is allocated and returned via edge_sets. Any other objects found in the file are returned as an attribute list via attributes.
Besides the following, any of the diagnostics produced by VistaIOReadFile may be generated.
|‘‘No edges objects present in stream.’’||No edge sets were encountered in the specified stream.|