How to use

addPaintListener

method

in

org.eclipse.swt.widgets.Composite

gray = GUIResource.getInstance().getColorDarkGray();
widget.addPaintListener( new PaintListener() {
 @Override
 public void paintControl( PaintEvent pe ) {

parent.addPaintListener(borderPainter);

parent.addPaintListener(borderPainter);

public static void main(String[] args) {
  Display display = Display.getDefault();
  Shell shell = new Shell(display, SWT.DIALOG_TRIM);
  shell.setLayout(new FillLayout());
  Composite c = new Composite(shell, SWT.BORDER);
  c.setLayout(new FillLayout());
  c.addPaintListener(new PaintListener() {
    @Override
    public void paintControl(PaintEvent e) {
      e.gc.drawLine(0, 0, 100, 50);
    }
  });
  Label lbl = new Label(c, SWT.NONE);
  lbl.setText("text");
  shell.open();
  while (!shell.isDisposed()) {
    if (display.readAndDispatch()) {
      display.sleep();
    }
  }
}

public static void main(String[] args) {
  Display display = Display.getDefault();
  Shell shell = new Shell(display, SWT.DIALOG_TRIM);
  shell.setLayout(new FillLayout());
  Composite c = new Composite(shell, SWT.BORDER);
  c.setLayout(new FillLayout());
  c.addPaintListener(new PaintListener() {
    @Override
    public void paintControl(PaintEvent e) {
      e.gc.drawLine(0, 0, 100, 50);
    }
  });
  Label lbl = new Label(c, SWT.NONE);
  lbl.setText("text");
  shell.open();
  while (!shell.isDisposed()) {
    if (display.readAndDispatch()) {
      display.sleep();
    }
  }
}

Utils.addListenerAndChildren(cRow, SWT.MouseExit, listenerRow);
cRow.addPaintListener(listenerRowPaint);

mainComposite.addPaintListener(new PaintListener() {

public static void debugLayout(final Composite c, final int color) {
  c.addPaintListener(e -> {
    Color save = e.gc.getForeground();
    e.gc.setForeground(Display.getCurrent().getSystemColor(color));
    e.gc.drawRectangle(1, 1, c.getBounds().width - 1, c.getBounds().width - 1);
    // e.gc.drawLine(1, 1, c.getBounds().width - 1, c.getBounds().height - 1);
    e.gc.setForeground(save);
  });
}

protected void highlight(final Composite parent, final Label labelControl, final Combo comboBox, final int color) {
  Object data= labelControl.getData();
  if (data == null) {
    if (color != HIGHLIGHT_NONE) {
      PaintListener painter= new HighlightPainter(parent, labelControl, comboBox, color);
      parent.addPaintListener(painter);
      labelControl.setData(painter);
    } else {
      return;
    }
  } else {
    if (color == HIGHLIGHT_NONE) {
      parent.removePaintListener((PaintListener) data);
      labelControl.setData(null);
    } else if (color != ((HighlightPainter) data).fColor){
      ((HighlightPainter) data).fColor= color;
    } else {
      return;
    }
  }
  
  parent.redraw();
}

if (color != HIGHLIGHT_NONE) {
  PaintListener painter= new HighlightPainter();
  parent.addPaintListener(painter);
  labelControl.setData(painter);
} else {

private void installCompositeListeners(Composite c) {
  if (!c.isDisposed()) {
    printAddListener(c, "PAINT"); //$NON-NLS-1$
    c.addPaintListener(paintListener);
    printAddListener(c, "MOUSETRACK"); //$NON-NLS-1$
    c.addMouseTrackListener(mouseTrackListener);
    printAddListener(c, "SWT.MenuDetect"); //$NON-NLS-1$
    c.addListener(SWT.MenuDetect, compositeListener);
    printAddListener(c, "SWT.MouseDown"); //$NON-NLS-1$
    c.addListener(SWT.MouseDown, compositeListener);
    printAddListener(c, "SWT.MouseDoubleClick"); //$NON-NLS-1$
    c.addListener(SWT.MouseDoubleClick, compositeListener);
  }
}

private void installCompositeListeners(Composite c) {
  if (!c.isDisposed()) {
    printAddListener(c, "PAINT"); //$NON-NLS-1$
    c.addPaintListener(paintListener);
    printAddListener(c, "MOUSETRACK"); //$NON-NLS-1$
    c.addMouseTrackListener(mouseTrackListener);
    printAddListener(c, "SWT.MenuDetect"); //$NON-NLS-1$
    c.addListener(SWT.MenuDetect, compositeListener);
    printAddListener(c, "SWT.MouseDown"); //$NON-NLS-1$
    c.addListener(SWT.MouseDown, compositeListener);
    printAddListener(c, "SWT.MouseDoubleClick"); //$NON-NLS-1$
    c.addListener(SWT.MouseDoubleClick, compositeListener);
  }
}

private void installCompositeListeners(Composite c) {
 if(!c.isDisposed()) {
  printAddListener(c, "PAINT"); //$NON-NLS-1$
  c.addPaintListener(paintListener);
  printAddListener(c, "MOUSETRACK"); //$NON-NLS-1$
  c.addMouseTrackListener(mouseTrackListener);
  printAddListener(c, "SWT.MenuDetect"); //$NON-NLS-1$
  c.addListener(SWT.MenuDetect, compositeListener);
  printAddListener(c, "SWT.MouseDown"); //$NON-NLS-1$
  c.addListener(SWT.MouseDown, compositeListener);
  printAddListener(c, "SWT.MouseDoubleClick"); //$NON-NLS-1$
  c.addListener(SWT.MouseDoubleClick, compositeListener);
 }
}

public void setControl(final Composite composite, Rectangle cellArea, boolean addListeners) {
  if (composite == null) {
    dispose();
    this.composite = null;
    return;
  }
  this.composite = composite;
  this.cellArea = cellArea;
  if (addListeners) {
   composite.addPaintListener(this);
   composite.addMouseListener(this);
   composite.addMouseMoveListener(this);
   composite.addMouseTrackListener(this);
  }
  setForeground(-1, -1, -1);
  setText(null);
  setToolTip(null);
  composite.addDisposeListener(new DisposeListener() {
    @Override
    public void widgetDisposed(DisposeEvent e) {
      dispose();
    }
  });
  if (coreDataSource != null && !isDisposed()) {
    invokeVisibilityListeners(TableCellVisibilityListener.VISIBILITY_SHOWN,
        true);
  }
}

border = new CSSBorderPropertiesImpl();
control.setData(CSSSWTConstants.CONTROL_CSS2BORDER_KEY, border);
parent.addPaintListener(CSSSWTHelpers
    .createBorderPaintListener(engine, control));

border = new CSSBorderPropertiesImpl();
control.setData(CSSSWTConstants.CONTROL_CSS2BORDER_KEY, border);
parent.addPaintListener(CSSSWTHelpers
    .createBorderPaintListener(engine, control));

parent.addPaintListener(
  new PaintListener(){

container.addPaintListener(e -> onPaint(e));
MenuManager manager = new MenuManager();
IMenuListener listener = manager1 -> contextMenuAboutToShow(manager1);

button.setSize(fIconSize + 4, fIconSize + 4);
button.setLocation((index * (fIconSize + spacing) + spacing - fSpacing), 2);
button.addPaintListener(e -> {
  if (fSelectedProvider == provider) {
    fSelectedProviderButton = button;

final Composite parent= labelControl.getParent();
PreferenceHighlight highlight= new PreferenceHighlight(parent, labelControl, mainControl);
parent.addPaintListener(highlight);