ToolTalk User's Guide

Scoping to a Session Only

The type TT_SESSION scopes to a session only. Static session-scoped patterns require an explicit tt_session_join call to set the scope value; dynamic session-scoped patterns can be set with either the tt_session_join call or the tt_pattern_session_add call.

Note –

The session specified by these calls must be the default session.

Example 3–1 shows a static session-scoped pattern; Example 3–2 shows a dynamic session-scoped pattern.

Example 3–1 Static Session-Scoped Pattern

Obtain procid	tt_open();
Ptype is scoped to session	tt_ptype_declare(ptype);
Join session	tt_session_join(tt_default_session());

Example 3–2 Dynamic Session-Scoped Pattern with a File Attribute

Obtain procid	tt_open();
Create pattern	Tt_pattern pat = tt_create_pattern();
Add scope to pattern	tt_pattern_scope_add(pat, TT_SESSION);
Add session to pattern	tt_pattern_session_add (tt_default_session());
Register pattern	tt_pattern_register(pat);