Flex - LinkButton Control


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Introduction

The LinkButton control is a borderless Button control whose contents are highlighted when a user hover over it. You must specify a click event handler for the LinkButton control to perform some action similar to a button.

Class Declaration

Following is the declaration for mx.controls.LinkButton class −

public class LinkButton 
   extends Button

Public Methods

S.No Method & Description
1 LinkButton()

Constructor.

Methods Inherited

This class inherits methods from the following classes −

  • mx.controls.Button
  • mx.core.UIComponent
  • mx.core.FlexSprite
  • flash.display.Sprite
  • flash.display.DisplayObjectContainer
  • flash.display.InteractiveObject
  • flash.display.DisplayObject
  • flash.events.EventDispatcher
  • Object

Flex LinkButton Control Example

Let us follow the following steps to check usage of LinkButton control in a Flex application by creating a test application −

Step Description
1 Create a project with a name HelloWorld under a packagecom.tutorialspoint.client as explained in the Flex - Create Application chapter.
2 Modify HelloWorld.mxml as explained below. Keep rest of the files unchanged.
3 Compile and run the application to make sure business logic is working as per the requirements.

Following is the content of the modified mxml file src/com.tutorialspoint/HelloWorld.mxml

<?xml version = "1.0" encoding = "utf-8"?>
<s:Application xmlns:fx = "http://ns.adobe.com/mxml/2009"
   xmlns:s = "library://ns.adobe.com/flex/spark"
   xmlns:mx = "library://ns.adobe.com/flex/mx"
   width = "100%" height = "100%" minWidth = "500" minHeight = "500">	
   
   <fx:Style source = "/com/tutorialspoint/client/Style.css" />
   <fx:Script>
      <![CDATA[
         import mx.controls.Alert;

         protected function clickMe_clickHandler(event:MouseEvent):void {
            var linkButton:LinkButton =  event.target as LinkButton;
            Alert.show("LinkButton "+linkButton.id+" Clicked");
         }
      ]]>
   </fx:Script>
   
   <s:BorderContainer width = "550" height = "500" id = "mainContainer" 
      styleName = "container">
      <s:VGroup width = "100%" height = "100%" gap = "50" horizontalAlign = "center"
         verticalAlign = "middle">
         <s:Label id = "lblHeader" text = "Basic Controls Demonstration" 
            fontSize = "40" color = "0x777777" styleName = "heading" />
         
         <s:Panel title = "Using LinkButton" width = "420" height = "100" >
            <s:layout>
               <s:HorizontalLayout paddingTop = "10" paddingLeft = "10" />
            </s:layout>					
            <mx:LinkButton label = "Link 1" id = "clickMe"
               click = "clickMe_clickHandler(event)" />
            <mx:LinkButton label = "Link 2" id = "clickMe1" 
               click = "clickMe_clickHandler(event)" />
            <mx:LinkButton label = "Link 3" id = "clickMe2" 
               click = "clickMe_clickHandler(event)" />
         </s:Panel>			      
      </s:VGroup>	 
   </s:BorderContainer>	
</s:Application>

Once you are ready with all the changes done, let us compile and run the application in normal mode as we did in Flex - Create Application chapter. If everything is fine with your application, this will produce following result: [ Try it online ]

Flex LinkButton Control
flex_basic_controls.htm

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