first.java

ｊａｖａ的ｓｗｔ图形程序

import org.eclipse.swt.SWT;
import org.eclipse.swt.events.MouseAdapter;
import org.eclipse.swt.events.MouseEvent;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.layout.FormAttachment;
import org.eclipse.swt.layout.FormData;
import org.eclipse.swt.layout.FormLayout;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Menu;
import org.eclipse.swt.widgets.MenuItem;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;

public class first {

	private static Button b1;
	private static Text text;
	/**
	 * Launch the application
	 * @param args
	 */
	public static void main(String[] args) {
		final Display display = Display.getDefault();
		final Shell shell = new Shell();
		shell.setLayout(new FormLayout());
		shell.setSize(0, 0);
		shell.setText("SWT Application");
		//

		shell.open();

		final Label label = new Label(shell, SWT.BORDER);
		final FormData fd_label = new FormData();
		fd_label.left = new FormAttachment(0, 30);
		fd_label.right = new FormAttachment(0, 55);
		fd_label.bottom = new FormAttachment(0, 138);
		fd_label.top = new FormAttachment(0, 125);
		label.setLayoutData(fd_label);
		label.setText("Label");

		final Label label_1 = new Label(shell, SWT.NONE);
		final FormData fd_label_1 = new FormData();
		fd_label_1.bottom = new FormAttachment(0, 36);
		fd_label_1.top = new FormAttachment(0, 23);
		fd_label_1.right = new FormAttachment(0, 30);
		fd_label_1.left = new FormAttachment(0, 5);
		label_1.setLayoutData(fd_label_1);
		label_1.setText("Label");

		text = new Text(shell, SWT.BORDER);
		final FormData fd_text = new FormData();
		fd_text.bottom = new FormAttachment(0, 60);
		fd_text.top = new FormAttachment(0, 41);
		fd_text.right = new FormAttachment(0, 108);
		fd_text.left = new FormAttachment(0, 35);
		text.setLayoutData(fd_text);

		b1 = new Button(shell, SWT.NONE);		
		b1.addMouseListener(new MouseAdapter() {
			public void mouseDoubleClick(MouseEvent arg0) {
				b1.setVisible(false);
			}
			public void mouseDown(MouseEvent arg0) {
				b1.setVisible(false);
			}
		});	
		final FormData gd_b1 = new FormData();
		gd_b1.bottom = new FormAttachment(0, 100);
		gd_b1.top = new FormAttachment(0, 50);
		gd_b1.right = new FormAttachment(0, 426);
		gd_b1.left = new FormAttachment(0, 185);
		b1.setLayoutData(gd_b1);
		b1.setText("B1");

		final Menu menu = new Menu(shell, SWT.BAR);
		shell.setMenuBar(menu);

		final MenuItem menuItem_2 = new MenuItem(menu, SWT.CASCADE);
		menuItem_2.setText("Menu Item");

		final Menu menu_1 = new Menu(menuItem_2);
		menuItem_2.setMenu(menu_1);

		final MenuItem menuItem_3 = new MenuItem(menu_1, SWT.CASCADE);
		menuItem_3.setText("Menu Item");

		final Menu menu_2 = new Menu(menuItem_3);
		menuItem_3.setMenu(menu_2);

		final MenuItem menuItem_4 = new MenuItem(menu_2, SWT.NONE);
		menuItem_4.addSelectionListener(new SelectionAdapter() {
			public void widgetSelected(SelectionEvent arg0) {
			
				b1.setText("asa");
			}
		});
		menuItem_4.setText("Menu Item");

		final MenuItem menuItem_1 = new MenuItem(menu_1, SWT.NONE);
		menuItem_1.setText("Menu Item");

		final MenuItem menuItem = new MenuItem(menu, SWT.CASCADE);
		menuItem.setText("Menu Item");

		final Menu menu_3 = new Menu(menuItem);
		menuItem.setMenu(menu_3);

		final MenuItem menuItem_5 = new MenuItem(menu_3, SWT.NONE);
		menuItem_5.setText("Menu Item");
		shell.layout();
		shell.pack();
		shell.open();
		while (!shell.isDisposed()) {
			if (!display.readAndDispatch())
				display.sleep();
		}
	}

}