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Contents

Captcha

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

Captcha.png

 <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

Last Update : 2011/2/17


Version Date Content
     




Copyright © Potix Corporation. This article is licensed under GNU Free Documentation License.