gtk:tree-sortable-has-default-sort-func (sortable)

sortable -- a gtk:tree-sortable object

True, if the model has a default sort function.

Returns true if the model has a default sort function. This is used primarily by gtk:tree-view-column objects in order to determine if a model can go back to the default state, or not. The gtk:tree-sortable implementation is deprecated since 4.10. Please do not use it in newly written code.