How to make an application to be minimized in taskbar tray?

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From: Christopher Panadol (thfchristopher_at_hotmail.com)
Date: 09/11/04 

Date: Sat, 11 Sep 2004 10:25:09 +0800

I have checked the Help, but I can't find any information about how to write the code, or
make any property settings that can make the application that can be minimized to the
taskbar tray.

Does anyone know how to achieve it?