void setExampleGroupBackgroundMode () {
		if (backgroundModeGroup == null) return;
		String modeString = backgroundModeCombo.getText ();
		int mode = SWT.INHERIT_NONE;
		if (modeString.equals("SWT.INHERIT_DEFAULT")) mode = SWT.INHERIT_DEFAULT;
		if (modeString.equals("SWT.INHERIT_FORCE")) mode = SWT.INHERIT_FORCE;
		exampleGroup.setBackgroundMode (mode);
	}