Comment 1 for bug 699992

I'd like to hear an opinion from Christian or Daniel, this is the first try.. It runs a default picture viewer associated with the file extension. Originally, I was thinking of having a dialog with some picture viewing apps, that could do the job... But gtk+ 2.x doesn't have this feature (introduced in gtk+ 3.0). To support this with gtk+ 2.x, we can use some existing code, which does this, but is it worth doing this?