Progress indicator in Linux Dock/Taskbar icon?

Hi Folks,

We can add a progressbar to a Mac Dock icon by drawing and to a Windows taskbar with the TaskBar class from the WFS. Has anyone looked into the GTK3 launcher API to see about doing this for Linux? To accomplish this in Python, the follow code works:

[code]from gi.repository import Unity

Pretend to be Xojo for the sake of the example

launcher = Unity.LauncherEntry.get_for_desktop_id (“xojo2018r4.desktop”)

Set progress to 42% done

launcher.set_property(“progress”, 0.42)
launcher.set_property(“progress_visible”, True)[/code]

Any ideas for Xojo/declares?