Hi Ian,
Thanks for your interest in Syncfusion products.
Instead of "CellMouseDown" event, please make use of "MouseDown" event which will fire when "AllowSelection" property is set to "Any".
void gridControl1_MouseDown(object sender, MouseEventArgs e)
{
int row, col;
this.gridControl1.PointToRowCol(new Point(e.X, e.Y), out row, out col);
}
Please refer to the sample in the following link
http://www.syncfusion.com/downloads/Support/DirectTrac/92112/WindowsFormsApplication85-1379732731.zipPlease let me know if you have any concerns.
Regards,
Mercy.C