CheckBox in GroupRow

 

Maybe you have older version? I tried with V15.1.3 and I don't see a problem.

For those who want same:

 

Private Sub wndReportControl_BeforeDrawRow(ByVal Row As XtremeReportControl.IReportRow, ByVal Item As XtremeReportControl.IReportRecordItem, ByVal Metrics As XtremeReportControl.IReportRecordItemMetrics)
    Dim grpRow As ReportGroupRow
    If Row.GroupRow Then
        Set grpRow = Row
            grpRow.GroupCaption = _
            "<StackPanel>" & _
            "<CheckBox Margin='1' IsThreeState='True' IsChecked='' Padding='0'>3-State Check Box</CheckBox>" & _
            "</StackPanel>"
    End If
End Sub

 

 

Good luck