[Qt-interest] qtreewidget

[phil prentice]

Hi
  I am producing a dialog which uses a QTreeWidget.  I have a number of 
questions regarding it. I have included the main function that is working 
with the QTreeWidget.  
The main problem that I have is that my table has two sets of headings.
A top level heading that sits on a group of lower level headings...

First and second rows are headings...data follows.	 
|      NETWORK        |       CHAN WIRING   |   CHAN ROUTING |
| Active |    Name      |  Type  | Number        |  Module | Highway |
| True    |   FRED1     |  DIG   |  100             |    DS      |    DF     |
| True    |   FRED1     |  DIG   |  100             |    DS      |    DF     |
.....

Using QTreeWidget is there any clever way of handling these headings?  I could 
not see anything that would help me.

What I did in the end was fix each of the column widths in pixels and created 
the one QLABEL =  "NETWORK           CHAN WIRING     CHAN ROUTING"
and suitably spaced it out to appear above the QTreeWidget columns. I stopped 
the dialogs width from being modified and fixed it at an appropriate width.  
It seems to work, but I was wondering if there is a better way?

I know that I am depending on the font being the same, but in my case this 
should not be a problem.

Is it bad programming practise that I have fixed the column widths or is that 
perfectly acceptable?

Any help appreciated

Phil

Code:-
void NetIdDialog::createAndLayoutNetworkRoutingTab()
{
  // Create "NETWORK INFO & ROUTING" widgets.
  m_networkLabel = new QLabel(
        "                    NETWORK                                  "
                                "CHANNEL WIRING                  "
                                "CHANNEL ROUTING");
  m_netRoutingTreeWidget = new QTreeWidget();
  m_netRouting = new QWidget();

  // Add headings
  m_netRoutingTreeWidget->setColumnCount(7);
  QTreeWidgetItem *header = m_netRoutingTreeWidget->headerItem();
  header->setText(0, "Active");
  header->setText(1, "Name");
  header->setText(2, "Type");
  header->setText(3, "Number");
  header->setText(4, "Force/Sense");
  header->setText(5, "Module");
  header->setText(6, "Routing Highway");
  setMaximumWidth(725);
  setMinimumWidth(725);

  m_netRoutingTreeWidget->setColumnWidth(0, 50);
  m_netRoutingTreeWidget->setColumnWidth(1, 190);
  m_netRoutingTreeWidget->setColumnWidth(2, 50);
  m_netRoutingTreeWidget->setColumnWidth(3, 70);
  m_netRoutingTreeWidget->setColumnWidth(4, 100);
  m_netRoutingTreeWidget->setColumnWidth(5, 70);
  m_netRoutingTreeWidget->setColumnWidth(6, 200);

  // Do Layout.
  QHBoxLayout *firstRowLayout = new QHBoxLayout;
  firstRowLayout->addWidget(m_networkLabel);
  firstRowLayout->addStretch();

  QVBoxLayout *mainLayout = new QVBoxLayout;
  mainLayout->addLayout(firstRowLayout);
  mainLayout->addWidget(m_netRoutingTreeWidget);
  m_netRouting->setLayout(mainLayout);
}