# Event Listeners
### Introduction
Provided below are functions that activate when data is sent to the App from the widget.
Name
Description
onMessage
Function that activates when messages sent from widget are received on the App
## 📚 API Explanation and Example
### onMessage
{% hint style="info" %}
widget.onMessage.Add(function(player, data: any){});
{% endhint %}
Callback function that activates when a message is sent from the widget to the App.
**Parameters**
Name
Type
Description
player
Player
The player who owns the widget
data
Object
The message sent from the widget to the App
**Example**
Create a function to close the widget screen when x is pressed.
{% file src="" %}
```jsx
// Activates function when a player enters
App.onJoinPlayer.Add(function (player) {
player.tag = {
widget: null,
};
player.tag.widget = player.showWidget("sample.html.html", "top", 600, 500);
player.tag.widget.onMessage.Add(function (player, msg) {
// Closes the widget when the 'type: close' message is sent from the widget to the App
if (msg.type == "close") {
player.showCenterLabel("Widget has been closed.");
player.tag.widget.destroy();
player.tag.widget = null;
}
});
});
```
**sample.html**: Button and script section
```jsx
```
