vcl-dxtreeview-dot-tdxtreeviewcontrol-dot-underscore-events.md
A Tree View control.
| Name | Description |
|---|---|
| OnAddition | Allows you to customize settings of a node when it is added to the Tree View. Inherited from TdxCustomTreeView. |
| OnAlignInsertBefore | Inherited from TWinControl. |
| OnAlignPosition | Inherited from TWinControl. |
| OnCancelEdit | Allows you to perform specific actions every time the Tree View control discards user changes made in an in-place editor. Inherited from TdxCustomTreeView. |
| OnCanFocusNode | Allows you to prohibit users from focusing a node. Inherited from TdxCustomTreeView. |
| OnCanResize | Inherited from TControl. |
| OnCanSelectNode | Allows you to prohibit users from selecting a tree node. Inherited from TdxCustomTreeView. |
| OnClick | Inherited from TControl. |
| OnCollapsed | Allows you to respond to node collapse operations. Inherited from TdxCustomTreeView. |
| OnCollapsing | Allows you to prohibit users from collapsing a node. Inherited from TdxCustomTreeView. |
| OnCompare | Allows you to implement a custom node sorting. Inherited from TdxCustomTreeView. |
| OnConstrainedResize | Inherited from TControl. |
| OnContextPopup | Inherited from TControl. |
| OnCustomDraw | Allows you to override or complement the Tree View control’s draw routine. Inherited from TdxCustomTreeView. |
| OnCustomDrawNode | Allows you to override or complement the tree node draw routine. Inherited from TdxCustomTreeView. |
| OnDblClick | Inherited from TControl. |
| OnDeletion | Allows you to perform specific actions every time a node is deleted. Inherited from TdxCustomTreeView. |
| OnDockDrop | Inherited from TWinControl. |
| OnDockOver | Inherited from TWinControl. |
| OnDragDrop | Inherited from TControl. |
| OnDragOver | Inherited from TControl. |
| OnEdited | Allows you to perform specific actions when a user renames a node in an in-place editor. Inherited from TdxCustomTreeView. |
| OnEditing | Allows you to prohibit users from opening a node caption’s in-place editor. Inherited from TdxCustomTreeView. |
| OnEndDock | Inherited from TControl. |
| OnEndDrag | Inherited from TControl. |
| OnEnter | Inherited from TWinControl. |
| OnExit | Inherited from TWinControl. |
| OnExpanded | Allows you to respond to a node expansion. Inherited from TdxCustomTreeView. |
| OnExpanding | Allows you to prohibit users from expanding a node. Inherited from TdxCustomTreeView. |
| OnFocusChanged protected | Inherited from TcxControl. |
| OnFocusedNodeChanged | Allows you to perform specific actions when a node receives or loses focus. Inherited from TdxCustomTreeView. |
| OnGesture | Inherited from TControl. |
| OnGetChildren protected | Allows you to perform specific actions when the Tree View obtains a node‘s children during a node expand operation. Inherited from TdxCustomTreeView. |
| OnGetEditingText | Allows you to customize text displayed in an opened in-place editor. Inherited from TdxCustomTreeView. |
| OnGetImageIndex | Allows you to specify an image for the node. Inherited from TdxCustomTreeView. |
| OnGetSelectedImageIndex | Allows you to specify the image for the selected node. Inherited from TdxCustomTreeView. |
| OnGetSiteInfo | Inherited from TWinControl. |
| OnHint | Allows you to show custom text in a node‘s hint. Inherited from TdxCustomTreeView. |
| OnKeyDown | Inherited from TWinControl. |
| OnKeyPress | Inherited from TWinControl. |
| OnKeyUp | Inherited from TWinControl. |
| OnMouseActivate | Inherited from TControl. |
| OnMouseDown | Inherited from TControl. |
| OnMouseEnter | Occurs when the mouse pointer enters into the control. Inherited from TcxControl. |
| OnMouseLeave | Occurs when the mouse pointer leaves the control. Inherited from TcxControl. |
| OnMouseMove | Inherited from TControl. |
| OnMouseUp | Inherited from TControl. |
| OnMouseWheel | Inherited from TControl. |
| OnMouseWheelDown | Inherited from TControl. |
| OnMouseWheelUp | Inherited from TControl. |
| OnNodeStateChanged | Allows you to respond to a node‘s checkbox state change. Inherited from TdxCustomTreeView. |
| OnResize | Inherited from TControl. |
| OnSelectionChanged | Allows you to respond to the Tree View control’s selection changes. Inherited from TdxCustomTreeView. |
| OnStartDock | Inherited from TControl. |
| OnStartDrag | Inherited from TControl. |
| OnUnDock | Inherited from TWinControl. |
See Also