There should be an easy way to add an header icon to a xfce4.gui.AboutDialog instance. Reproducible: Always Steps to Reproduce:
Created attachment 382 Workaround
what's wrong with aboutdialog1.set_icon(pixbuf1) ?
(In reply to comment #2) > what's wrong with aboutdialog1.set_icon(pixbuf1) ? > Thanks, it works :) I just didn't knew that it does more than gtk.Window.set_icon.