Infobubble in PyGtk

I am working on a PyGTK based desktop App . I need a UI component that is similar to infobubble used in Google Maps , i.e. it displays HTML and adheres to a particular point. I looked for a widget like this , but to no avail . Can any one point out particul开发者_如何学运维ar GTK widget to look for , as I am new to GTK.

There isn't one in the standard GTK widgets. You might try to write one yourself, or perhaps Clutter might be your toolkit of choice...