GtkScrolledWindow::set_placement
This method sets the positions of the scrollbars in a
GtkScrolledWindow to one of four possible
GtkCornerType values.
These values are a little counter-intuitive because they describe
the position of the child, rather than the position of the scrollbars
themselves.
The default setting is GTK_CORNER_TOP_LEFT, which
causes the child to be placed above and to the left of the scrollbars -
i.e., the scrollbars are at the bottom and to the right of the child.
