formMarginsComposite.setLayoutData( gdhspan( ( part.getScaleVertically() ? gdfill() : gdhfill() ), 2 ) );
formMarginsComposite.setBackground( resources().color( part.getBackgroundColor() ) );
formMarginsComposite.setBackgroundMode( SWT.INHERIT_DEFAULT );
this.form = new SashForm( formMarginsComposite, ( part.orientation() == Orientation.HORIZONTAL ? SWT.HORIZONTAL : SWT.VERTICAL ) | SWT.SMOOTH );
register( this.form );
this.form.setLayoutData( gdfill() );
this.form.setBackground( resources().color( part.getBackgroundColor() ) );