Sets requisition to the size needed by this to display the model row pointed to by
path.
Combo box formerly used this to calculate the sizes for cellviews, now you can achieve this by either using the
GtkCellView:fit-model property or by setting the currently displayed row of the
CellView and using gtk_widget_get_preferred_size.
| this |
a CellView |
| path |
a TreePath |
| requisition |
return location for the size |
|
true |