# Fscommand-Fullscreen does not work in Flash Player 9

**URL:** <https://forum.kirupa.com/t/fscommand-fullscreen-does-not-work-in-flash-player-9/295331>\
**Category:** flash\
**Created:** [August 28, 2009, 7:39am UTC](https://forum.kirupa.com/t/fscommand-fullscreen-does-not-work-in-flash-player-9/295331 "2009-08-28T07:39:55Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![indra16](https://avatars.discourse-cdn.com/v4/letter/i/4bbf92/32.png) [@indra16](https://forum.kirupa.com/u/indra16)\
**Post date:** [August 28, 2009, 7:39am UTC](https://forum.kirupa.com/t/fscommand-fullscreen-does-not-work-in-flash-player-9/295331/1 "2009-08-28T07:39:55Z")

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Dear all,

I have a problem with Flash Player 9. I have developed a flash application (projector) in Flash CS3 using AS2 . I can compile it into Flash 9 projector, but when I do that, it will not run FSCOMMAND(“FULLSCREEN”, true); anymore. I wonder why this is as such.

When I read through some help resources, somewhere it says that FSCOMMAND is not supported in FP9 because of some security reasons and it says that I should use External Interface API instead.

Can anybody enlighten me about this issue? If I have to use External Interface whatever, can anybody help me with that? Please remember that I am working with flash projector (exe), not in a browser.  
I use “trapallkeys” to stop people from pressing ESC and CTRL-F to quit fullscreen mode. However, ESC and CTRL-F still work if I put “trapallkeys” above “fullscreen”.

So the problem is, I only able to use either one, not both. This is really strange. Do you have the same problem?

I could not make “showmenu”, “false” to work either.

Thank you for your reply,

Indra16