Default state of the systray icon

In my WPF application, I had to set a systray ico开发者_JS百科n. It's a business application which will be used every days.

In win 7(maybe vista, i don't know), Some icons can be hidden, displayed only when notifications, always displayed. Is it possible to indicate directly that my systray icon has to be always displayed? Otherwise, my customer will have to set this on every workstation it installs this program

Thank you!

This is not supported. You can see Raymond thoughts on this.