Captcha

Captcha

• Demonstration: Capcha
• Java API: Captcha
• JavaScript API: Captcha
• Style Guide: N/A
• Available in ZK PE and EE only

Employment/Purpose

A captcha component can generate a special distortion image, also called a CAPTCHA (Completely Automated Public Turing test to tell Computers and Humans Apart) image. Developers could set height and width for dimension of captcha. By default, captcha render the image with a randomly generated text, and developers can set value to assign a purposive text.

Example

 <vbox>
     <captcha id="cpa" length="5" width="200px" height="50px"/>
 </vbox>

Supported Events

Name	Event Type
None	None

• Inherited Supported Events: Image

Supported Children

*NONE

Use Cases

Version	Description	Example Location

Troubleshooting

Linux

Captcha depends on Java Swing that might not work under some version of JVM. For the information to make it work under Linux, please refer to ZK Installation Guide: Linux.

Version History

Version	Date	Content