Custom Controls
The
cfapplet
tag allows you to use custom Java
controls within your ColdFusion pages as if they were native
ColdFusion tags, like cftree
and
cfgrid
. Although it isn’t
required that you use cfapplet
within a
cfform
block, this is generally where the tag is
used the most. For example, you might have a Java applet called Menu
that acts as an expandable/collapsible menu you’d
like to use in a ColdFusion application. In order to call a custom
Java applet, it first has to be registered with the ColdFusion
Administrator (Figure 10-15).
Figure 10-15. The applets section of the ColdFusion Administrator
To register a custom Java applet, you need to complete the following steps:
Open the ColdFusion Administrator, and click on the Java Applets link.
Click the Register New Applet button.
Enter information into the applet registration page, which is shown in Figure 10-16. When you are finished filling in the form, click the Submit Changes button to save your selection.
Figure 10-16. The applet registration page of the ColdFusion Administrator
The following list explains each option on the registration page:
- Applet Name
Enter a name for your Java control.
- Code
Enter the name of your Java .class file. You don’t need to list the .class extension. (e.g., myapplet).
- Codebase
Enter the base URL ...
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