Formatting tableView header text

[gabor53]

Hi,
Is it possible to format the header of a tableView? I'd like to change the font size, color and font.```
#include "mainwindow.h"
#include "ui_mainwindow.h"

MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this);
QSqlDatabase db;
db = QSqlDatabase::addDatabase ("QSQLITE");
db.setDatabaseName ("C:/Programming/Qtsamples/Image_from_db_to_Table/db.db");

    if(!db.open ())
    {
        qDebug() << "The database is NOT open!";
    }
    else
    {
        qDebug() << "The database is open!";
    }

    QSqlQuery query("SELECT ID,Pic FROM Items");

    if(query.isActive()==true)
      {
          qDebug() << "The query is active.";
      }
      else
      {
         qDebug() << "The query is NOT active.";
      } 

    query.first (); int ID ;

    QStandardItemModel *smodel = new QStandardItemModel;
    QStandardItem *Item = new QStandardItem();
    QStandardItem *Item2 = new QStandardItem();

    Item->setData (ID = query.value (0).toInt (),Qt::DisplayRole);
    qDebug() << "ID = " << Item->data ().toInt ();
    smodel->setItem (0,0,Item);

    QByteArray ByteArray;
    ByteArray = query.value (1).toByteArray ();
    QPixmap Pixmap;
    Pixmap.loadFromData (ByteArray);
    Pixmap = Pixmap.scaled (100,100,Qt::KeepAspectRatio);

    Item2->setData (QVariant(Pixmap),Qt::DecorationRole);

    smodel->setItem (0,1,Item2);

 // ui->tableView->verticalHeader ()->setDefaultSectionSize (100);
  ui->tableView->setEditTriggers (QAbstractItemView::NoEditTriggers);
  smodel->setHeaderData (0,Qt::Horizontal, QObject::tr ("ID"));
  smodel->setHeaderData (1,Qt::Horizontal, QObject::tr ("Picture"));

  ui->tableView->setModel (smodel);

  ui->tableView->resizeColumnsToContents ();
  ui->tableView->resizeRowsToContents ();

db.close ();

}

MainWindow::~MainWindow()
{
delete ui;
}

Thank you for your help.

[Ratzz]

Hi,
May be you can set font using QFont

          ui->tableView->horizontalHeader()->setFont( font);

Size using setStyleSheet

      ui->tableView->horizontalHeader()->setStyleSheet("QHeaderView { font-size: 10pt; }");

color using

         ui->tableView->horizontalHeader()->setStyleSheet("color: blue;");

[gabor53]

Hi,
Thank you for your help.
I added the following to the code after

ui->tableView->resizeRowsToContents ();

The added code:

      ui->tableView->horizontalHeader ()->setFont (Arial);
      ui->tableView->horizontalHeader ()->setStyleSheet ("QheaderView {font-size: 14pt;}");
      ui->tableView->horizontalHeader ()->setStyleSheet ("color: blue;");

The first line generates an error message:
C:\Programming\Qtsamples\Image_from_db_to_Table\mainwindow.cpp:65: error: 'Arial' was not declared in this scope
       ui->tableView->horizontalHeader ()->setFont (Arial);

The rest changes the color but not the font size.
What did I do incorrectly? Thanks.
                                                    ^

[SGaist]

Hi,

Arial is not a variable that exists. You should have something like setFont(QFont("Arial"));

[gabor53]

Thank you. Unfortunately it doesn't do anything. Is the location in the code correct? Is it possible that some settings somewhere else overrides the code?
Thank you.

[Devopia53]

Hi,

ui->tableView->horizontalHeader()->setStyleSheet ("QHeaderView {font: 14pt Arial; color: blue;}");

[gabor53]

Thank you. It worked.

[Ratzz]

@gabor53
You could also try

     QFont font("Arial", 20, QFont::Bold);
     ui->tableView->horizontalHeader()->setFont( font );

[G4bandit]

I think my topic fit quit good to this post so I reopen a part? :)

I determined also that this way

ui->tableView->horizontalHeader()->setFont( correctParams);

does not have any effects on the header only this works

ui->tableView->horizontalHeader()->setStyleSheet("QHeaderView {font: 14pt}");

BUT
I would like not to format the whole header instead I prefer to format some selected "section" (or let say cells of the header pool)

I perform it in this way and it returns 1 / true

qDebug() << ui->TV_DBIn->model()->setHeaderData(2,Qt::Horizontal,QTextFormat(QTextFormat::FontWeight),Qt::FontRole);

But there is no effect.

I hope it does not to do with "QStyleFactory"

[G4bandit]

SOLUTION:

ui->tableView->model()->setHeaderData(2,Qt::Horizontal,QFont("Arial",10,QFont::Bold),Qt::FontRole);

Actually everything is stated in the Qt Help, - just need to know how to correctly use it :)