# TreeView.ICallback interface

Namespace: [Eto.Forms](https://eto.picoe.ca/api/namespace/eto.forms.md) · Assembly: [Eto](https://eto.picoe.ca/api/assembly/eto.md)

```cs
public interface TreeView.ICallback : Control.ICallback
```

Callback interface for instances of [TreeView](https://eto.picoe.ca/api/type/eto.forms.treeview.md)

**Derived types:** [TreeView.Callback](https://eto.picoe.ca/api/type/eto.forms.treeview.callback.md)

## Methods

- [OnActivated](https://eto.picoe.ca/api/type/eto.forms.treeview.icallback/onactivated.md): Raises the activated event.
- [OnCollapsed](https://eto.picoe.ca/api/type/eto.forms.treeview.icallback/oncollapsed.md): Raises the collapsed event.
- [OnCollapsing](https://eto.picoe.ca/api/type/eto.forms.treeview.icallback/oncollapsing.md): Raises the collapsing event.
- [OnExpanded](https://eto.picoe.ca/api/type/eto.forms.treeview.icallback/onexpanded.md): Raises the expanded event.
- [OnExpanding](https://eto.picoe.ca/api/type/eto.forms.treeview.icallback/onexpanding.md): Raises the expanding event.
- [OnLabelEdited](https://eto.picoe.ca/api/type/eto.forms.treeview.icallback/onlabeledited.md): Raises the label edited event.
- [OnLabelEditing](https://eto.picoe.ca/api/type/eto.forms.treeview.icallback/onlabelediting.md): Raises the label editing event.
- [OnNodeMouseClick](https://eto.picoe.ca/api/type/eto.forms.treeview.icallback/onnodemouseclick.md): Raises the node mouse click event.
- [OnSelectionChanged](https://eto.picoe.ca/api/type/eto.forms.treeview.icallback/onselectionchanged.md): Raises the selection changed event.

## Inherited Members

- From [Control.ICallback](https://eto.picoe.ca/api/type/eto.forms.control.icallback.md): [OnDragDrop](https://eto.picoe.ca/api/type/eto.forms.control.icallback/ondragdrop.md), [OnDragEnd](https://eto.picoe.ca/api/type/eto.forms.control.icallback/ondragend.md), [OnDragEnter](https://eto.picoe.ca/api/type/eto.forms.control.icallback/ondragenter.md), [OnDragLeave](https://eto.picoe.ca/api/type/eto.forms.control.icallback/ondragleave.md), [OnDragOver](https://eto.picoe.ca/api/type/eto.forms.control.icallback/ondragover.md), [OnEnabledChanged](https://eto.picoe.ca/api/type/eto.forms.control.icallback/onenabledchanged.md), [OnGotFocus](https://eto.picoe.ca/api/type/eto.forms.control.icallback/ongotfocus.md), [OnKeyDown](https://eto.picoe.ca/api/type/eto.forms.control.icallback/onkeydown.md), [OnKeyUp](https://eto.picoe.ca/api/type/eto.forms.control.icallback/onkeyup.md), [OnLostFocus](https://eto.picoe.ca/api/type/eto.forms.control.icallback/onlostfocus.md), [OnMouseDoubleClick](https://eto.picoe.ca/api/type/eto.forms.control.icallback/onmousedoubleclick.md), [OnMouseDown](https://eto.picoe.ca/api/type/eto.forms.control.icallback/onmousedown.md), [OnMouseEnter](https://eto.picoe.ca/api/type/eto.forms.control.icallback/onmouseenter.md), [OnMouseLeave](https://eto.picoe.ca/api/type/eto.forms.control.icallback/onmouseleave.md), [OnMouseMove](https://eto.picoe.ca/api/type/eto.forms.control.icallback/onmousemove.md), [OnMouseUp](https://eto.picoe.ca/api/type/eto.forms.control.icallback/onmouseup.md), [OnMouseWheel](https://eto.picoe.ca/api/type/eto.forms.control.icallback/onmousewheel.md), [OnShown](https://eto.picoe.ca/api/type/eto.forms.control.icallback/onshown.md), [OnSizeChanged](https://eto.picoe.ca/api/type/eto.forms.control.icallback/onsizechanged.md), [OnTextInput](https://eto.picoe.ca/api/type/eto.forms.control.icallback/ontextinput.md), [OnThemeChanged](https://eto.picoe.ca/api/type/eto.forms.control.icallback/onthemechanged.md)