Thank you very much guys,

I have solved it like this

Thank you jpn...

Qt Code:
  1. QModelIndexList result = comboStokKod->model()->match(comboStokKod->model()->index(0, 1), Qt::EditRole, query.value(3), 1, Qt::MatchExactly);
  2. comboStokKod->setCurrentIndex(result.value(0).row());
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