TMS FNC TreeView

TMS FNC TreeView is a multi-column, high-performance tree control for VCL, FMX, and WEB Core. It supports both a virtual mode (data retrieved via events, suitable for millions of nodes) and a collection-based mode (nodes stored in a Nodes collection). Both modes use the same API surface, differentiated by method/property name suffixes.

Documentation

Start here	Use when
Get started	You want a working tree on screen quickly.
Guides	You want task-oriented chapters grouped by feature area.
API reference	You want class, property, method, and event details.
Release notes	You want what changed in recent versions.

Key features

• High-performance virtual and collection-based node modes
• Multi-column support with autosizing and stretching
• HTML-formatted text in nodes via TMS Mini HTML
• Column groups spanning multiple columns
• Fixed and variable node height
• Checkbox and radiobutton support per node column
• Extended nodes stretching across all columns
• Inplace editing with TEdit, TMemo, TComboBox, or a custom editor
• Filtering (dropdown and programmatic) and sorting per column
• Clipboard cut/copy/paste
• Drag-and-drop and node reordering
• JSON viewer via ViewJSON
• TTMSFNCCheckedTreeView variant with per-node checkboxes

API classes

Class	Responsibility
TTMSFNCTreeView	Main component — handles rendering, interaction, and the collection-based node API
TTMSFNCTreeViewData	Node data types: TTMSFNCTreeViewNode, TTMSFNCTreeViewVirtualNode, TTMSFNCTreeViewColumn, TTMSFNCTreeViewGroup
TTMSFNCTreeViewDatabaseAdapter	Connects a TDataSet to the tree; loads records as nodes