4.1 The AppTree

• Nodetype structures
• Node instances
• Internal variables
• Callbacks
• Managing the infrastructure
• Button texts management
• Callbacks management
• ATS management
• Managing single trees
• Un/Registering node types
• Managing images and text prefixes
• Managing tree position information
• Managing nodetypes flags
• Managing actions
• Managing context menus
• Creating and deleting node instances

Located at lib/apptree.tcl

This package manages the Application Tree component, that is shown on the left of the Ferret frame:

It is primarily implemented via a Tree megawidget from the BWidget library.

There can be several apptrees opened on the application at a time.

• Nodetype structures
• Node instances
• Internal variables
• Callbacks
• Managing single trees
• Un/Registering node types
• Managing images and text prefixes
• Managing tree position information
• Managing nodetypes flags
• Managing actions
• Managing context menus
• Creating and deleting node instances