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/dialogs/DialogPage.java
if (image != null) {
            image.dispose();
            image = null;
        }
    }
    /**
     * Sets or clears the message for this page.
     * <p>
     * This is a shortcut for <code>setMessage(newMesasge, NONE)</code>
     * </p>
     * 
     * @param newMessage
     *            the message, or <code>null</code> to clear the message
     */
    public void setMessage(String newMessage) {
        setMessage(newMessage, NONE);
    }
    /**
     * Sets the message for this page with an indication of what type of message
     * it is.
     * <p>
     * The valid message types are one of <code>NONE</code>,
     * <code>INFORMATION</code>,<code>WARNING</code>, or
     * <code>ERROR</code>.
     * </p>
     * <p>
     * Note that for backward compatibility, a message of type
     * <code>ERROR</code> is different than an error message (set using
     * <code>setErrorMessage</code>). An error message overrides the current
     * message until the error message is cleared. This method replaces the