Please ignore my previous and incomplete post.
int n = m_refFileSelection->count_selected_rows ();
if ( n == 1 ) {
Gtk::TreeIter iter = m_refFileSelection->get_selected ();
if ( iter ) {
m_refFileSelection->unselect ( iter );
}
}
and
int n = m_refFileSelection->count_selected_rows ();
if ( n != 0 ) {
m_refFileSelection->unselect_all ();
}
Both of these code snippets generate the following two error messages
when the if-test is satisfied:
Gtk-CRITICAL **: gtk_tree_store_get_value: assertion 'VALID_ITER
(iter, tree_store)' failed
GLib-GObject-CRITICAL **: g_value_get_string: assertion
'G_VALUE_HOLDS_STRING (value)' failed
Is this reasonable?
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