Bug 73027 [Dialogs] Buttons are too high
I20040831 Buttons are no longer oval but have a rounded rectangle shape (see first screenshot). The second screenshot shows how buttons using the small system font should look like.
bundles/org.eclipse.jface/src/org/eclipse/jface/preference/FieldEditor.java
* <p>
 * A field editor presents the value of a preference to the end 
 * user. The value is loaded from a preference store; if
 * modified by the end user, the value is validated and eventually
 * stored back to the preference store. A field editor reports
 * an event when the value, or the validity of the value, changes.
 * </p>
 * <p>
 * Field editors should be used in conjunction with a field 
 * editor preference page (<code>FieldEditorPreferencePage</code>)
 * which coordinates everything and provides the message line
 * which display messages emanating from the editor.
 * </p>
 * <p>
 * This package contains ready-to-use field editors for various
 * types of preferences:
 * <ul>
 *   <li><code>BooleanFieldEditor</code> - booleans</li>
 *   <li><code>IntegerFieldEditor</code> - integers</li>
 *   <li><code>StringFieldEditor</code> - text strings</li>
 *   <li><code>RadioGroupFieldEditor</code> - enumerations</li>
 *   <li><code>ColorFieldEditor</code> - RGB colors</li>
 *   <li><code>FontFieldEditor</code> - fonts</li>
 *   <li><code>DirectoryFieldEditor</code> - directories</li>
 *   <li><code>FileFieldEditor</code> - files</li>
 *   <li><code>PathEditor</code> - paths</li>
 * </ul>
 * </p>
 */
public abstract class FieldEditor {