public void createControl(Composite parent) {
Composite composite = new Composite(parent, SWT.NULL);
composite.setLayout(new GridLayout());
composite.setLayoutData(new GridData(GridData.VERTICAL_ALIGN_FILL
| GridData.HORIZONTAL_ALIGN_FILL));
composite.setSize(composite.computeSize(SWT.DEFAULT, SWT.DEFAULT));
Composite container = new Composite(composite, SWT.NONE);
container.setLayout(new GridLayout(2, false));
GridData gridData = new GridData(SWT.FILL, SWT.FILL, true, false);
gridData.minimumWidth = 450;