Hello,
I want to add meta information (set a %tag% item) dynamically when a playlist item is loaded (or manually reloaded).

Therefore, when I tried adding the field by calling

from a metadb_callback derived class (on_info_reloaded overloaded method)


I obtain the following error


How should I do?
I thought about using a timer, however I want scripts/columns ui/etc. to be able use the tag. Same remark for using play_callback::on_playback_new_track

I think foo_tunes and foo_quicktag_sql implemented such a system (or was it manual sync?), but I've never succeeded in seeing it in action.

Create an invisible/message-only window and use PostMessage from within the callback.

Thank you for the suggestion.

I created a window to do the job. The only problems are:

1/ When I click the "update" button in either the standard or special file info box, the change won't be noticeable in the box until I close and reopen it. By design?
Note that on_info_edited() is called, but I don't know if it's the case for the modifier component.
I would like to add meta info that would only be available at runtime, and not stored physically in the music file. Is this concept wrong to begin with?

2/ I have another problem. The callback is not called when adding a file to the playlist, only when restoring a playlist or pressing "Update". Is there a handler for that event?