message: Use vectorized operations to set ComboBox position
diff: @@ -64,10 +64,10 @@ void ComboBox::resizedHandler(Control* /*control*/)
  txtField.width(width() - 20);
  txtField.height(height());
  - btnDown.position({positionX() + width() - btnDown.width(), positionY()});
  + btnDown.position(position() + NAS2D::Vector<float>{width() - btnDown.width(), 0});
  btnDown.height(height());
  lstItems.width(width());
  - lstItems.position({positionX(), positionY() + height()});
  + lstItems.position(position() + NAS2D::Vector<float>{0, height()});
  mBaseArea = {positionX(), positionY(), width(), btnDown.height()};
  }
  