Show PyGTK Window on all virtual desktops/workspaces

Question

I am working on a timer which should after a certain time show a popup window. I want to force the user to accept the fact that the time is up.

I would like to set the window to be visible on all workspaces. I am able to set that property manually in a window manager but the application should do that.

How to ask a window manager to make a window "show on all workspaces"?

Answer 1

Call my_window.stick().