/**
* Sets the default menu item to the argument or removes the default emphasis when the argument is
* <code>null</code>.
*
* @param item the default menu item or null
* @exception IllegalArgumentException
* <ul>
* <li>ERROR_INVALID_ARGUMENT - if the menu item has been disposed
* </ul>
*
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
* </ul>
*/
public void setDefaultItem(MenuItem item) {
checkWidget();
if (item != null) {
if (item.isDisposed()) error(SWT.ERROR_INVALID_ARGUMENT);
if (item.parent != this) return;
OS.QMenu_setDefaultAction(handle, item.handle);
} else {
OS.QMenu_setDefaultAction(handle, 0);
}
}
void releaseChildren_pp(boolean destroy) {
MenuItem[] items = getItems();
for (int i = 0; i < items.length; i++) {
MenuItem item = items[i];
if (item != null && !item.isDisposed()) {
item.release(false);
}
}
super.releaseChildren_pp(destroy);
}