FormLayout example snippet: create a simple OK/CANCEL dialog using form layout : FormLayout « SWT « Java Tutorial

1. Java Tutorial
2. SWT
3. FormLayout

/*******************************************************************************
 * Copyright (c) 2000, 2004 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
//package org.eclipse.swt.snippets;
/*
 * FormLayout example snippet: create a simple OK/CANCEL dialog using form layout
 *
 * For a list of all SWT example snippets see
 * http://www.eclipse.org/swt/snippets/
 */
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.FormAttachment;
import org.eclipse.swt.layout.FormData;
import org.eclipse.swt.layout.FormLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;

public class DialogOKCancelFormLayout {

  public static void main(String[] args) {
    Display display = new Display();
    Shell shell = new Shell(display);

    Shell dialog = new Shell(shell, SWT.DIALOG_TRIM);
    Label label = new Label(dialog, SWT.NONE);
    label.setText("Exit the application?");
    Button okButton = new Button(dialog, SWT.PUSH);
    okButton.setText("&OK");
    Button cancelButton = new Button(dialog, SWT.PUSH);
    cancelButton.setText("&Cancel");

    FormLayout form = new FormLayout();
    form.marginWidth = form.marginHeight = 8;
    dialog.setLayout(form);
    FormData okData = new FormData();
    okData.top = new FormAttachment(label, 8);
    okButton.setLayoutData(okData);
    FormData cancelData = new FormData();
    cancelData.left = new FormAttachment(okButton, 8);
    cancelData.top = new FormAttachment(okButton, 0, SWT.TOP);
    cancelButton.setLayoutData(cancelData);

    dialog.setDefaultButton(okButton);
    dialog.pack();
    dialog.open();

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

17.94.FormLayout
	17.94.1.	Using FormLayouts
	17.94.2.	FormLayout: attach with left and right margin
	17.94.3.	FormLayout: attach each other
	17.94.4.	FormData Objects and FormAttachment Objects
	17.94.5.	FormData: width and height
	17.94.6.	FormLayout: spacing
	17.94.7.	To configure the attachment of each side
	17.94.8.	Attaching a Control to a Position in the Parent Composite
	17.94.9.	Specify the offset of the control side from the attachment position
	17.94.10.	Without FormAttachment objects
	17.94.11.	Specify attachments for all four sides of a control.
	17.94.12.	Attaching a Control to Another Control
	17.94.13.	Attaching to the Adjacent Side of Another Control
	17.94.14.	Attaching to the Specified Side of Another Control
	17.94.15.	Center a control on another control
	17.94.16.	Center control both horizontally and vertically
	17.94.17.	Use FormLayout to layout a dialog
	17.94.18.	Start with the upper-left button, attach the top and left edges to the window, offsetting by five pixels:
	17.94.19.	To create the upper-right three buttons, you reason that you can put them all in a composite with a grid layout, and attach the composite to your first button:
	17.94.20.	Attach the bottom button to the upper-left button and the window:
	17.94.21.	FormLayout Complex
	17.94.22.	FormLayout example snippet: create a simple dialog using form layout
	17.94.23.	FormLayout example snippet: center a label and single line text using a form layout
	17.94.24.	FormLayout example snippet: create a simple OK/CANCEL dialog using form layout