#2375 add a way to change help viewer

[T. Bug Reporter]

As mentioned in this thread, Microsoft's Help viewer facility is being phased out, and has recently been changed to disallow viewing of CHM files located on network drives. While there is currently no clear substitute or migration path, there is at least one alternative viewer in existence without the limitations of the current one. For those needing this alternative, it would be nice if KeePass could be configured to use this (or another) alternative viewer when one is present.

[T. Bug Reporter]

As of version 2.40 (2-1/2 years ago and only 2 months after I posted this FR), KeePass supports KChmViewer on *ix; how hard would it be to extend this support to Windows?

[Dominik Reichl]

I've now added a customization option 'Configuration/Application/HelpUrl' to override the URL that is opened for a help page.

Documentation:
https://keepass.info/help/v2_dev/customize.html#opt

Development snapshot:
https://keepass.info/filepool/KeePass_210529.zip

If KchmViewer is installed to 'C:\Program Files\Ulduzsoft\KchmViewer', you can set 'HelpUrl' to:
cmd://"C:\Program Files\Ulduzsoft\KchmViewer\kchmviewer.exe" -showPage "/help/{BASE}" "{APPDIR}\KeePass.chm"

Thanks and best regards,
Dominik

[T. Bug Reporter]

That works - thank you. 😁

[lesensei]

Just to let people know that with this, the next release of SumatraPDF will also be a working and lightweight option to deal with local help files in KeePass.
In my case, the french help file only displays blank pages on W10, so these options are very welcome.

[Dominik Reichl]

Very nice, thanks for the info!