Possible to add keyboard shortcuts to increase and decrease image brightness?

[mattst]

Hi,

Is it possible to add keyboard shortcuts to increase and decrease brightness when in Viewer Mode?

In the Settings --> Interface --> Shortcuts --> Viewer Mode list there is no shortcut listed to increase or decrease brightness. But perhaps a shortcut can be manually added to the default.keys file or by some other way.

I have already assigned shortcut keys for the Enhance Colors shortcut which opens the dialog box where the brightness can be altered using a slide bar or a text box.

I think that this was at least once possible because keys to do so are listed in the All Current keyboard Hotkeys & Shortcuts thread (posted in 2006) and on the Viewer Mode Shortcut Keys Wiki page (last modified in 2009).

Note: I am Using XnView MP 0.96 64bits (Mar 20 2020) on Linux Mint (I can't upgrade XnView unless I first upgrade my version of Linux Mint).

Thanks.

[xnview]

currently not possible

[mattst]

Thanks for letting me know and thank you Pierre for a great piece of software.