How to delete empty area around control?

Byte-Welt - Projekte / Projects DockingFrames
1

I add control.getContentArea() to a frame. I’v emput space around docable in ContentArea.
Can I remove that empty space?

I use EclipseTheme.

2 
int height = 3; // space to the top/bottom
CContentArea area = ... 
area.setMinimumAreaSize( new Dimension( width, height ));```