Tree View Object

This object is built into VP Studio Shell. Click here to download VP Studio Shell samples.

Steps to include object into your project:

VP Studio Shell	Description
	Create custom control with the name: cl_tree_view
	Edit Object properties using VP Studio Shell property editor. You can define: Font Background color Alignment Name of the tree root
	Preview object and compile application. The parameters entered will be passed to the object in final application. The same data will appear in your compiled application

Note: Tree View object classes are not compatible with previous version of Tree View Object.
If you are user of VP Studio Setup utility - please use follow instruction below.

To include Tree View Object - open your project.inc file with VP Studio Setup utility and checkout necessary options. Please save your changes and open Visual Prolog project.

This is tree browser implemented as an Visual Prolog Object custom control.

To include Tree View Object - open your project.inc file with VP Studio Setup utility and checkout necessary options. This will include necessary files.

Please save your changes and open Visual Prolog project.

Open your Visual Prolog project and create custom control with the name "Class_catalog_view"

Insert the following code before creating of the custom control (e_create event of the Window)

BROWSELIST_ITEM = bi(visited,"Tree Root",node(open,YOUR_TREE),idi_computer),

CATALOG_DATA = catalog_browsetree(YOUR_TREE,catalog_action_callback),

TreeData = cast(long,CATALOG_DATA),

SystemObject = system_object::new(_Win),

SystemObject:save_object_ref("catalog_initial_data",TreeData),

Code above creates necessary links between custom control and window handler.

Please refer to Tree Manipulator sample for more details.

Last Updated: April 17, 2002