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   [Expand]AlertButton Class
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 End-User Documentation

AlertControl Class

The component that supports displaying alert windows.

Namespace:DevExpress.XtraBars.Alerter
Assembly:DevExpress.XtraBars.v17.1.dll

Expanded Syntax

Expanded Remarks

Use the AlertControl component to be able to display alert windows in your applications. An alert window is a small window, typically displayed for a short time, and automatically closed after this time has elapsed. They are a kind of notification window, implemented in Microsoft Outlook.

An alert window can be created via the Show method. Using this method, you can specify an alert window's caption, text, and image, and also associate custom data with this window via the tag parameter. You can subsequently use this custom data when processing mouse or other events for alert windows.

See Alert Windows Overview to learn more.

Expanded Example

By default, an alert window's on-screen appearance is semi-transparent. The following code shows how make an alert window's on-screen appearance opaque. To change the opacity level, handle the BeforeFormShow event.

Expanded Example

The following example shows how to add custom buttons to an AlertControl.

It's assumed that an AlertControl control has been added to the form at design time. In the example, two custom buttons are added to the control's Buttons collection. The first button is a regular button, which when clicked, produces the ButtonClick event. The second button has checked and unchecked states. Clicking this button fires the ButtonDownChanged event.

The result is shown below:

Expanded Inheritance Hierarchy

System.Object
    System.MarshalByRefObject
       System.ComponentModel.Component
          AlertControl

Expanded See Also

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