RGtk2 (version 2.20.31)

custom-tree-models: Custom GtkTreeModel implementations

Description

Functions that allow one to implement a custom GtkTreeModel

Usage

gtkTreeIter(id, stamp) gtkTreeIterGetId(iter) gtkTreeIterSetId(iter, id) gtkTreeIterGetStamp(iter) gtkTreeIterSetStamp(iter, stamp)

Arguments

iter

The GtkTreeIter of a custom model

id

The integer code identifying iter

stamp

The integer code for tracking the version of iter

Value

For gtkTreeIter, an external pointer to the underlying C structure.For gtkTreeIterGetId, the integer code identifying the element referred to by iter.For gtkTreeIterGetStamp, the integer code identifying the version of iter.

Details

These functions allow one to create and access GtkTreeIter structures when implementing a GtkTreeModel. gtkTreeIter creates an iter from scratch, given an id and stamp. gtkTreeIterGetId and gtkTreeIterSetId access the integer that identifies the data element referred to by iter. gtkTreeIterGetStamp and gtkTreeIterSetStamp access the integer that serves as a version stamp. After the model changes, the model version should be incremented, so that all existing iters are invalidated, as evidenced by their stamp.

See Also

gClass