ZK Component Reference/Containers/Caption

Caption

• Demonstration: Groupbox
• Java API: Caption
• JavaScript API: Caption
• Style Guide: Caption

Employement/Purpose

A header for a Groupbox. It may contain either a text label, using LabelElement.setLabel(String), or child elements for a more complex caption.

Preload Image

since 6.0.0

The feature is applied to all of the LabelImageElement and Image components.

By default the preload function is disabled, so users have to specify the custom-attributes and set it to true. For example,

<caption image="xxx.png" label="caption">
  <custom-attributes org.zkoss.zul.image.preload=”true”/>
</caption>

Or specify it just below the root component.

For example,

<window>
  <custom-attributes org.zkoss.zul.image.preload=”true”/>
  <caption image="xxx.png" label="caption">
  <image src="xxx.png"/>
</window>

As you can see, the custom-attributes will be checked recursively.

Example

 <zk>
     <window border="normal" width="350px">
          <caption label="This is a caption"/>
             <groupbox width="300px">
                  <caption label="fruits"/>
                  <radiogroup onCheck="fruit.value = self.selectedItem.label">
                     <radio label="Apple"/>
                  <radio label="Orange"/>
                  <radio label="Banana"/>  
                  </radiogroup>
             </groupbox>
     </window>
 </zk>

Supported Events

Name	Event Type
None	None

• Inherited Supported Events: LabelImageElement

Supported Children

*ALL

Use Cases

Version	Description	Example Location
5.0	How to use the title and caption inside a Window	Title and Caption

Version History

Version	Date	Content