> What appears to happen, which I wasn't expecting, is the m_refTreeModel->clear(); call invokes the combobox signal_changed handler for every row?
yeah, gtk_combo_box_model_row_deleted() does that if the reference to the previous active_row is now invalid, and i presume sets the active model to the nearest still-valid one, and so on, etc. another way around this might be to block the signal while you clear the model.
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