I would like to toggle any .kml file included in a .dgml file via the legend with any icon and show anything contained in the kml file without filtering for roles.

So far, I have not seen any documentation that shows how to accomplish this. And any of the DGML files that I have found ( such as this one http://techbase.kde.org/Projects/Marble/CustomMaps ) are reliant upon role tags within the .kml file.

Reference:

https://bugs.kde.org/show_bug.cgi?id=311805

I uploaded an example here:

https://bugs.kde.org/show_bug.cgi?id=333484

Thanks to the Marble devs for helping me figure out the proper dgml construct. The file there only has one checkbox, but it can easily be replicated to more with cut and paste.

Which version of Marble are you using? This should be possible with the latest stable version.