课件说明名称cgraph.pdfVIP

LIBCGRAPH(3)LIBCGRAPH(3)

NAME

libcgraph−graphlibrary

SYNOPSIS

#includegraphviz/cgraph.h

TYPES

Agraph_t;

Agnode_t;

Agedge_t;

Agdesc_t;

Agdisc_t;

Agsym_t;

GRAPHS

Agraph_t*agopen(char*name,Agdesc_tkind,Agdisc_t*disc);

intagclose(Agraph_t*g);

Agraph_t*agread(void*channel,Agdisc_t*);

voidagreadline(intline_no);

voidagsetfile(char*file_name);

Agraph_t*agconcat(Agraph_t*g,void*channel,Agdisc_t*disc)

intagwrite(Agraph_t*g,void*channel);

intagnnodes(Agraph_t*g),agnedges(Agraph_t*g);

intagisdirected(Agraph_t*g

SUBGRAPHS

Agraph_t*agsubg(Agraph_t*g,char*name,intcreateflag);

Agraph_t*agidsubg(Agraph_t*g,unsignedlongid,intcflag);

Agraph_t*agfstsubg(Agraph_t*g),agnxtsubg(Agraph_t*);

Agraph_t*agparent(Agraph_t*g);

intagdelsubg(Agraph_t*g,Agraph_t*sub);/*sameasagclose()*/

NODES

Agnode_t*agnode(Agraph_t*g,char*name,intcreateflag);

Agnode_t*agidnode(Agraph_t*g,ulongid,intcreateflag);

Agnode_t*agsubnode(Agraph_t*g,Agnode_t*n,intcreateflag);

Agnode_t*agfstnode(Agraph_t*g);

Agnode_t*agnxtnode(Agraph_t*g,Agnode_t*n);

Agnode_t*agprvnode(Agraph_t*g,Agnode_t*n);

Agnode_t*aglstnode(Agraph_t*g);

intagdelnode(Agraph_t*g,Agnode_t*n);

intagdegree(Agnode_t*n,intuse_inedge