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https://issues.apache.org/jira/browse/GUACAMOLE-989?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17112525#comment-17112525
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Nick Couchman commented on GUACAMOLE-989:
-----------------------------------------

[~odairmun]: I'm not sure what you're asking.  If you're asking how to capture 
Alt-Tab and send it to the remote system, I don't think it is possible - the 
client operating system will always intercept the Alt-Tab key combo and will 
not pass it through to the browser, so it cannot be intercepted by the keyboard 
lock API.

If you mean, how do you implement the changes I have made, you need to clone 
the git repo and then merge the pull request mentioned above, and build the 
client code.  You can then deploy the resulting WAR file 
(guacamole/target/guacamole-1.2.0.war) and test it out.

> Add support for chromium keyboard lock allowing for system keys and shortcuts
> -----------------------------------------------------------------------------
>
>                 Key: GUACAMOLE-989
>                 URL: https://issues.apache.org/jira/browse/GUACAMOLE-989
>             Project: Guacamole
>          Issue Type: New Feature
>            Reporter: Aaron
>            Priority: Minor
>
> When accessing guacamole in a browser it would be great to have full RDP-like 
> keyboard key and shortcut access. It is very easy to perform actions by 
> special shortcuts (ie, Windows+Key, Alt+Tab) local PC instead of the intended 
> remote PC as well as CTRL key shortcuts on the local browser instead of the 
> remote browser. Another problem is closing the guacamole tab by accident via 
> Ctrl+F4 (I've done this several times!). Some similar issues were voiced in 
> GUACAMOLE-121 regarding CTRL+W.
> Please add support for Chromium's system keyboard lock API which allows a 
> rich keyboard experience in full screen mode (you hold ESC for 2 seconds to 
> exit). This would allow using special keys and shortcuts that we use 
> habitually, and habits are hard to break. So why break them? Instead add 
> keyboard lock functionality.
> Main page: [https://www.chromestatus.com/feature/5642959835889664]
> W3C Spec: [https://wicg.github.io/keyboard-lock/]



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