Can you do something to make it just hide a frame when you click the close button?

I'm making a program that has an icon in the taskbar by the clock so you can open it later without having it in the taskbar. I want to make it so you can click the close button and it just hides it. Right now when you just close it the icon disappears.

In the form_unload event set cancel to true and add there your minimize to system tray code ;)

It works, thanks