Capturing the 'Print Screen' keystroke event

[nussbac]

Hi

I suspect this is not possible, and perhaps someone will explain why, but does anyone know how to capture the 'PrintScreen' keystroke (and/or the 'Ctrl-PrintScreen' event)?

I would like to be able to do this in IE6/7, and FF2 would be 'nice to have' but not essential. Other browsers are not relevant.

I would like to trigger a small piece of script when a user tries presses the PrintScreen key.

I have an on-screen display that I would like to render unprintable. I know how to block the clipboard function, but I don't like that sort of intrusive code. The script I have will simply clear data that the user has entered on screen - rendering the use of the printscreen function very inconvenient.

Many thanks

PS - I'm a relative javascript beginner - so be gentle with me please!

[mrhoo]

PrtScn/SysReq key only fires onkeyup (44) in the window or a text field, so you cannot interrupt it. You can know that someone pressed it, but that seems like a small return for testing every keystroke.

[acoder]

Instead of trying to capture the "Print Screen" key, just use print-media stylesheets. See, for example, this link.