Header problem

[waynew]

I have never tried this before, so in a new form I put into the constructor:

model = new QStandardItemModel(this);
  ui->tvSpots->setModel(model); // QTableView
  header = new QHeaderView(Qt::Horizontal, this);
  ui->tvSpots->setHorizontalHeader(header);
  model->setHeaderData(0, Qt::Horizontal, "Click Connect to start");
  ui->tvSpots->show();

model = new QStandardItemModel(this);
  ui->tvSpots->setModel(model); // QTableView
  header = new QHeaderView(Qt::Horizontal, this);
  ui->tvSpots->setHorizontalHeader(header);
  model->setHeaderData(0, Qt::Horizontal, "Click Connect to start");
  ui->tvSpots->show();

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The table view shows up, but not the header.
Any ideas?