分割窗口，拖动窗口边框可以改变窗口大小

public class Demo2 {
	public static void main(String[] args) {
		Display display = new Display();
		Shell shell = new Shell(display);
		shell.setText("分割窗口，拖动窗口边框可以改变窗口大小");
		shell.setLayout(new FillLayout());
		
		
		SashForm form = new SashForm(shell, SWT.HORIZONTAL | SWT.BORDER);
		form.setLayout(new FillLayout());
		
		Composite child1 = new Composite(form, SWT.NONE);
		child1.setLayout(new FillLayout());
		new Text(child1,SWT.MULTI).setText("窗口1");
		
		Composite child2 = new Composite(form, SWT.NONE);
		child2.setLayout(new FillLayout());
		new Text(child2,SWT.MULTI).setText("窗口2");
		
		form.setWeights(new int[]{30,70});

		shell.pack();
		shell.open();
		while(!shell.isDisposed()){
			if(!display.readAndDispatch()){
				display.sleep();
			}
		}
		display.dispose();
	}
}