Well, of course I know that digging into the source code is always possible and I know that other applications somehow solved it. It's just somehow frustrating when you ask a concrete question and you get the answer "read the source code, the solution is somewhere there". What comes in addition is that even the image gallery example from the SDK uses code which must not be used for Harbour.

But OK, maybe I should simply stop hoping for some official re-use component or at least a semi-official guidance for such a common task. I stop complaining and spend some additional hours on understanding other solutions and - if feasible - adopt them.

However, any concrete assistance which saves time for a SFOS newbie developer (and possibly also other devs who have the same issue) is still very much appreciated. Maybe it's really easy and I've just been too stupid to find it.