TdxCustomShellTreeView Class

The base class for the Shell Tree View control.

Declaration

TdxCustomShellTreeView = class(
    TdxCustomTreeView,
    IDropTarget,
    IcxShellDependedControls,
    IcxShellRoot
)

Remarks

Shell Tree View is a Tree View control version designed to display Windows Shell content. The TdxCustomShellTreeView class implements base Shell Tree View functionality.

VCL Editors Library: A Shell Tree View Example

Main API Members

The list below outlines key members of the TdxCustomShellTreeView class. These members allow you to configure the Shell Tree View control.

Appearance Settings

OptionsView: Provides access to general Tree View appearance settings.

Behavior and User Interaction APIs

AlphaSort: Sorts shell items by their display names.
CustomSort | OnCompare: Allow you to implement a custom sort algorithm for shell items.
ExpandTo | FullExpand | FullCollapse | MakeVisible: Expand and collapse nodes.
FocusedNode: Specifies the focused node.
OptionsBehavior: Provides access to general Tree View behavior settings.
OptionsSelection: Provides access to selection-related settings.
OnShellChange: Allows you to respond to external changes in Windows Shell.

Note
The OnShellChange event occurs only if the ShellOptions.TrackShellChanges property is set to True (default).
ScrollBy | TopItem: Allow you to scroll Shell Tree View content.
Select | Subselect | Deselect | ClearSelection: Select and deselect shell items.
Selected | Selections: Provide access to selected shell items.

GroupIndex: Allows you to associate the Shell Tree View control with other shell controls.
OnAddFolder: Allows you to prevent certain shell items from appearing in the Shell Tree View control when it expands a node.
Path: Allows you to navigate to any accessible shell folder.
ShellOptions: Provides access to shell-related behavior settings.
ShellRoot: Allows you to configure shell root settings.
UpdateContent: Reloads displayed Windows Shell content.

General-Purpose API Members

Assign: Copies settings between Shell Tree View controls.
BeginUpdate | EndUpdate: Allow you to avoid excessive redraw operations during batch state and setting changes and improve application performance.
BeginSelect | EndSelect: Allow you to avoid excessive redraw operations during batch node selection changes and improve application performance. These procedures complement BeginUpdate and EndUpdate.
FullRefresh: Redraws the Shell Tree View control.