gtk.treeviewcolumn not sorting

Question

I've gotten a sortable treeview working. Clicking on the columns makes it sort by ascending order, and clicking it again makes it sort by descending order. However, if I click on the column header a third time, it goes to some "unsorted" state, instead of back to ascending. I connected a function to the clicked signal of the column, and printed out the column's get_sort_order(), and for each click I get SORT_ASCENDING for ascending, SORT_DESCENDING for descending, and SORT_DESCENDING again for the "unsorted" state. My tree view construction is something like this:

    self.hsModel = gtk.TreeStore(*[c[0] for c in columns])
    self.hsModelFilter = self.hsModel.filter_new()
    self.hsModelSort = gtk.TreeModelSort(self.hsModelFilter)
    #... define filterfunc ...
    self.hsModelFilter.set_visible_func(filterfunc)
    self.hsSelect = gtk.TreeView(self.hsModelSort)

    cl = gtk.TreeViewColumn(ctitle, renderer, **attrcols)                    
    cl.set_clickable(True)
    cl.set_sort_column_id(COL_ACTUALTIME)

    #... define sortdate ...
    self.hsModelSort.set_sort_func(COL_ACTUALTIME, sortdate)
    self.hsModelSort.set_sort_column_id(COL_ACTUALTIME, gtk.SORT_DESCENDING)

Any ideas?

Answer 1

Didn't test, but try if

self.hsModelSort.set_default_sort_func (None)

helps. Default value is just "use underlying order", but should be possible to reset to "no sort function at all" state.