gtk/gtk.go
func (v *Grid) AttachNextTo(child, sibling IWidget, side PositionType, width, height int) {
	C.gtk_grid_attach_next_to(v.native(), child.toWidget(),
		sibling.toWidget(), C.GtkPositionType(side), C.gint(width),
		C.gint(height))
}
func (v *Grid) AttachNextTo(child, sibling IWidget, side PositionType, width, height int) {
	C.gtk_grid_attach_next_to(v.native(), child.toWidget(),
		sibling.toWidget(), C.GtkPositionType(side), C.gint(width),
		C.gint(height))
}
// AttachNextTo() is a wrapper around gtk_grid_attach_next_to().