Java tutorial
import org.eclipse.swt.SWT; import org.eclipse.swt.custom.StyledText; import org.eclipse.swt.events.ModifyEvent; import org.eclipse.swt.events.ModifyListener; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Shell; public class StyledTextModifyListener { public static void main(String[] args) { final Display display = new Display(); final Shell shell = new Shell(display); final StyledText styledText = new StyledText(shell, SWT.V_SCROLL | SWT.BORDER); styledText.setText("12345"); styledText.addModifyListener(new ModifyListener() { public void modifyText(ModifyEvent event) { System.out.println("Character Count: " + styledText.getCharCount()); } }); styledText.setBounds(10, 10, 100, 100); shell.open(); while (!shell.isDisposed()) { if (!display.readAndDispatch()) { display.sleep(); } } display.dispose(); } }