# root\_view.h<a name="ZH-CN_TOPIC_0000001055198108"></a>

-   [Overview](#section1168354102165628)
-   [Summary](#section2067023294165628)
-   [Data Structures](#nested-classes)

## **Overview**<a name="section1168354102165628"></a>

**Related Modules:**

[Graphic](Graphic.md)

**Description:**

Manages a root view. 

A root view is the view containing its child views. It represents the root node in a tree structure and is the parent to all the children.

**Since:**

1.0

**Version:**

1.0

## **Summary**<a name="section2067023294165628"></a>

## Data Structures<a name="nested-classes"></a>

<a name="table809387794165628"></a>
<table><thead align="left"><tr id="row996848848165628"><th class="cellrowborder" valign="top" width="50%" id="mcps1.1.3.1.1"><p id="p1215082388165628"><a name="p1215082388165628"></a><a name="p1215082388165628"></a>Data Structure Name</p>
</th>
<th class="cellrowborder" valign="top" width="50%" id="mcps1.1.3.1.2"><p id="p1753442388165628"><a name="p1753442388165628"></a><a name="p1753442388165628"></a>Description</p>
</th>
</tr>
</thead>
<tbody><tr id="row1019269486165628"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.1 "><p id="p2032975065165628"><a name="p2032975065165628"></a><a name="p2032975065165628"></a><a href="OHOS-RootView.md">OHOS::RootView</a></p>
</td>
<td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.2 "><p id="p990721776165628"><a name="p990721776165628"></a><a name="p990721776165628"></a>Defines the functions related to a root view which contains its child views and represents the root node in a tree structure. </p>
</td>
</tr>
<tr id="row249243048165628"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.1 "><p id="p662058140165628"><a name="p662058140165628"></a><a name="p662058140165628"></a><a href="OHOS-RootView-OnKeyActListener.md">OHOS::RootView::OnKeyActListener</a></p>
</td>
<td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.2 "><p id="p1051296799165628"><a name="p1051296799165628"></a><a name="p1051296799165628"></a>Represents the listener for monitoring physical key events. </p>
</td>
</tr>
<tr id="row1698094593165628"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.1 "><p id="p1407067117165628"><a name="p1407067117165628"></a><a name="p1407067117165628"></a><a href="OHOS-RootView-OnVirtualDeviceEventListener.md">OHOS::RootView::OnVirtualDeviceEventListener</a></p>
</td>
<td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.2 "><p id="p1436223849165628"><a name="p1436223849165628"></a><a name="p1436223849165628"></a>Listens for the input events triggered by a virtual device other than human touching or physical pressing. </p>
</td>
</tr>
</tbody>
</table>