I host an ActiveX control which displays video. It is wrapped in QAxWidget. I try painting within QAxWidget but it always appears behind:

Qt Code: 
  1. void MainWindow::paintEvent(QPaintEvent* e)
  2. {
  3.     QMainWindow::paintEvent(e);
  4.     QPainter p(this);
  5.     p.setPen(Qt::red);
  6.     p.drawRect(10,10,100,100);
  7. }
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I can see the left top and left bottom corners of the rect to know it’s drawn but don’t understand how to get the z-order changed. The items are laid out in QDesigner. Below is some of the derived header from the UI compiler:

ui_mainwindow.h
Qt Code: 
  1. centralWidget = new QWidget(MainWindow);
  2.         centralWidget->setObjectName(QStringLiteral("centralWidget"));
  3.         gridLayout = new QGridLayout(centralWidget);
  4.         gridLayout->setSpacing(6);
  5.         gridLayout->setContentsMargins(11, 11, 11, 11);
  6.         gridLayout->setObjectName(QStringLiteral("gridLayout"));
  7.         HDVideo = new QAxWidget(centralWidget);
  8.         HDVideo->setControl(QStringLiteral("{cb1671db-6c24-4c48-b5f9-8276d135501e}"));
  9.         HDVideo->setObjectName(QStringLiteral("HDVideo"));
  10.  
  11.         gridLayout->addWidget(HDVideo, 0, 0, 1, 1);
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I’ve tried calling ui->HDVideo->lower as well as ui->HDVideo->stackUnder(this) which doesn’t work. How can you paint on a QAxWidget?