Gtk buttons over a Gtk drawing area

i' working with Gtk developing some app. I must put s开发者_运维问答ome buttons over a map. I'm drawing the map on a GtkDrawingarea, but i'm not able to put buttons over it. Any suggestion? Thanks

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Suggestions:

1. Put both the drawing area and the buttons inside a GtkFixed container. Probably not the best solution, because GtkFixed has no way of controlling the z-ordering (other than the order in which you add the widgets to it?)
2. Instead of using GtkDrawingArea, use a canvas widget that can include other widgets, such as GooCanvas.

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Why no other library? Any specific reason?

There is a library for exactly what you want

http://geocanvas.sourceforge.net/