MDIChild controlbox

Hi all!

I open a Form as Child to my parent Form and want to open it without the ControlBox. I have set the ControlBox, MinimizeBox and MaximizaBox property to false and they are not shown if I open the Form as a normal Form, but they are still shown if my Form is opened as a MDIChild. (The Child is also in maximized state)

Anyone know a way around this?

Thanks in advance!