Hello Marco,

Thank you for contacting. Yes ,you can have the tooltip on the control for your long text combo column.

You will need to include ultraToolTipManager1 component and then trap ValueChanged combo event, find the correct text (using IValueList.GetText) and then set the tooltip on the UltraCombo control , like this:

private void UltraCombo1_ValueChanged(object sender, EventArgs e)
{
var combo = (UltraCombo)sender;
var valueList = (IValueList)sender;
int index = -1;
valueList.GetText(combo.Value, ref index);
string toolTipText;
var codeLongDescColumn = combo.DisplayLayout.Bands[0].Columns["CodeLongDesc"];
if (index >= 0)
toolTipText = combo.Rows[index].GetCellText(codeLongDescColumn);
else
toolTipText = null;

var toolTipInfo = ultraToolTipManager1.GetUltraToolTip(combo);
toolTipInfo.ToolTipText = toolTipText;
}

I have also attached a sample project for the reference.
Let me know if you have any question.

Sincerely,
Divya Jain

6237.TestSample.zip