Imendio Macosx GTK+ Port : missing window refresh

[Bruno Coudoin <bruno coudoin free fr>]

I am trying to compile GCompris using on MacOSX using imemdio GTK. A
made a full build, the GCompris windows is displayed but there are no
refreshes until I move the window.

For example if I click on a button in GCompris that should move an item,
nothing happen. If I just move the window, then the item appears in it's
target place. We are using internally the gnomecanvas, I don't know if
it may be the issue.

Bruno.