How to use

checkWidget

method

in

org.eclipse.swt.widgets.Composite

@Override
protected void checkWidget() {
 super.checkWidget();
}

@Override
protected void checkWidget () {
  super.checkWidget ();
}

protected void checkWidget () {
  super.checkWidget ();
}

@Override
protected void checkWidget () {
  super.checkWidget ();
}

@Override
protected void checkWidget () {
  super.checkWidget ();
}

@Override
protected void checkWidget () {
  super.checkWidget ();
}

/**
 * Sets the layout which is associated with the receiver to be
 * the argument which may be null.
 *
 * @param layout the receiver's new layout or null
 *
 * @exception SWTException <ul>
 *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
 *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
 * </ul>
 */
public void setLayout (Layout layout) {
  checkWidget();
  this.layout = layout;
}

/**
 * Sets the layout which is associated with the receiver to be
 * the argument which may be null.
 *
 * @param layout the receiver's new layout or null
 *
 * @exception SWTException <ul>
 *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
 *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
 * </ul>
 */
public void setLayout (Layout layout) {
  checkWidget();
  this.layout = layout;
}

/**
 * Returns layout which is associated with the receiver, or
 * null if one has not been set.
 *
 * @return the receiver's layout or null
 *
 * @exception SWTException <ul>
 *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
 *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
 * </ul>
 */
public Layout getLayout() {
 checkWidget();
 return layout;
}

/**
 * Returns layout which is associated with the receiver, or
 * null if one has not been set.
 *
 * @return the receiver's layout or null
 *
 * @exception SWTException <ul>
 *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
 *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
 * </ul>
 */
public Layout getLayout () {
  checkWidget ();
  return layout;
}

/**
 * Sets the layout which is associated with the receiver to be
 * the argument which may be null.
 *
 * @param layout the receiver's new layout or null
 *
 * @exception SWTException <ul>
 *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
 *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
 * </ul>
 */
public void setLayout (Layout layout) {
  checkWidget ();
  this.layout = layout;
}

/**
 * Sets the layout which is associated with the receiver to be
 * the argument which may be null.
 *
 * @param layout the receiver's new layout or null
 *
 * @exception SWTException <ul>
 *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
 *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
 * </ul>
 */
public void setLayout (Layout layout) {
  checkWidget();
  this.layout = layout;
}

/**
 * Returns layout which is associated with the receiver, or
 * null if one has not been set.
 *
 * @return the receiver's layout or null
 *
 * @exception SWTException <ul>
 *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
 *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
 * </ul>
 */
public Layout getLayout () {
  checkWidget();
  return layout;
}

/**
 * Returns layout which is associated with the receiver, or
 * null if one has not been set.
 *
 * @return the receiver's layout or null
 *
 * @exception SWTException <ul>
 *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
 *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
 * </ul>
 */
public Layout getLayout () {
  checkWidget();
  return layout;
}

@Override
public boolean setFocus() {
 checkWidget();
 for( Control child : children ) {
  if( child.setFocus() ) {
   return true;
  }
 }
 return super.setFocus ();
}

public boolean setFocus () {
  checkWidget ();
  Control [] children = _getChildren ();
  for (int i= 0; i < children.length; i++) {
    if (children [i].setFocus ()) return true;
  }
  return super.setFocus ();
}

@Override
public boolean setFocus () {
  checkWidget();
  Control [] children = _getChildren ();
  for (int i=0; i<children.length; i++) {
    Control child = children [i];
    if (child.getVisible () && child.setFocus ()) return true;
  }
  return super.setFocus ();
}

@Override
public boolean setFocus () {
  checkWidget();
  Control [] children = _getChildren ();
  for (int i=0; i<children.length; i++) {
    Control child = children [i];
    if (child.getVisible () && child.setFocus ()) return true;
  }
  return super.setFocus ();
}

@Override
public boolean setFocus () {
  checkWidget();
  Control [] children = _getChildren ();
  for (int i=0; i<children.length; i++) {
    Control child = children [i];
    if (child.getVisible () && child.setFocus ()) return true;
  }
  return super.setFocus ();
}

@Override
public boolean setFocus () {
  checkWidget ();
  Control [] children = _getChildren ();
  for (int i=0; i<children.length; i++) {
    Control child = children [i];
    if (child.setRadioFocus (false)) return true;
  }
  for (int i=0; i<children.length; i++) {
    Control child = children [i];
    if (child.setFocus ()) return true;
  }
  return super.setFocus ();
}