Solved QTableview not fitting the entire dockwidget window

[saitej]

This code generates a tableview for a docked window as shown in image 1 but I want a tableview as shown in image 2. (second image tableview was generated on mainwindow using setCentralWidget(widget); ). When I try to use the same code , i get the error 'setCentralwidget' not declared in this scope as it is not mainwindow. How to get the similar view for a docked window?

 ui->deleteButton->setEnabled(false);
    ui->tableView->setModel(model);
    ui->tableView->setItemDelegate(new ItemDelegate(this));
    ui->tableView->verticalHeader()->setDefaultAlignment(Qt::AlignVCenter | Qt::AlignRight);
    ui->tableView->horizontalHeader()->setStretchLastSection(true);
    ui->tableView->resizeColumnsToContents();


    ui->tableView->verticalHeader()->setSectionsMovable(true);

    ui->addButton->setFocus();

image1
image2

[mrjj]

@saitej said:
hi for a docked window, you would add a
layout to it first and then insert the controls
in that layout. then it will fit all area of window.

http://doc.qt.io/qt-5/layout.html

[SGaist]

Hi,

Did you call QDockWidget::setWidget ?

[saitej]

@SGaist :
Ya I have called that code ...

[saitej]

@mrjj
Ya I have already used this code.

QVBoxLayout *layout = new QVBoxLayout;
    layout->addWidget(ui->tableView);

    layout->addWidget(ui->addButton);
    layout->addWidget(ui->deleteButton);

    QWidget *widget = new QWidget;
    widget->setLayout(layout);
        setCentralWidget(widget);

But I am getting the following error.
error: 'setCentralWidget' was not declared in this scope
setCentralWidget(widget);
^

[mrjj]

@saitej said:

setCentralWidget

This is only valid with a QMainwindow. :)

You would do
(the code u shown)
and then
DockWidget->setWidget (widget);

[saitej]

@mrjj :

I already tried dis code but of no use. It is giving the same output.

   QVBoxLayout *layout = new QVBoxLayout;
    layout->addWidget(ui->tableView);

    layout->addWidget(ui->addButton);
    layout->addWidget(ui->deleteButton);

//    QWidget *widget = new QWidget;
    QDockWidget *DockWidget = new QDockWidget;
    DockWidget->setLayout(layout);
    DockWidget->setWidget (DockWidget);

[SGaist]

Don't set the layout on DockWidget.

By the way, there's something fishy in your code. Did you create your widget with designer and now trying to use it with a QMainWindow ?

Because it looks like you are trying to create the dock widget from within your custom widget and not from a QMainWindow derived class.

[saitej]

@SGaist

First I have created the dock in the mainwindow and I am creating the table on the dock through a table class. This layout function is in the class.
Suggest me the right way of getting this done.
MainWindow Code:

// Dock Creation
  this->setCorner(Qt::TopLeftCorner, Qt::LeftDockWidgetArea);
    this->setCorner(Qt::TopRightCorner, Qt::RightDockWidgetArea);
    this->setCorner(Qt::BottomLeftCorner, Qt::LeftDockWidgetArea);
    this->setCorner(Qt::BottomRightCorner, Qt::RightDockWidgetArea);
// table creation
QDockWidget *dock = new QDockWidget("Way Point Table",this);
    wayPointTable *wptable = new wayPointTable();
    dock->setWidget(wptable);
    dock->setFixedSize(500, 300);

    this->addDockWidget(Qt::BottomDockWidgetArea, dock);

WayPointTable class has this code:

ui->tableView->verticalHeader()->setDefaultAlignment(Qt::AlignVCenter | Qt::AlignRight);
    ui->tableView->horizontalHeader()->setStretchLastSection(true);
    ui->tableView->resizeColumnsToContents();

QVBoxLayout *layout = new QVBoxLayout;
    layout->addWidget(ui->tableView);

    layout->addWidget(ui->addButton);
    layout->addWidget(ui->deleteButton);

//    QWidget *widget = new QWidget;
    QDockWidget *DockWidget = new QDockWidget;
    DockWidget->setLayout(layout);
    DockWidget->setWidget (DockWidget);
//            setCentralWidget(widget);

   

[SGaist]

There's no need for any dock widget related code in WayPointTable. Also DockWidget->setWidget (DockWidget); doesn't really make sense.

One thing to clean, since you used designer for that widget, why are you setting a layout in code ? You should put it directly in through designer.

[saitej]

@SGaist
How to set the tableview to occupy the entire dock window through the designer ? I have put the tableview and the 2 buttons in a formlayout.

[SGaist]

Did you set the form layout properly on the widget in designer ?

[saitej]

@SGaist Ya

[SGaist]

By the way, why a form layout ?

You should either have everything in a QVBoxLayout or if you want the buttons to be side by side, put them in a QHBoxLayout within the main QVBoxLayout.

[saitej]

@SGaist
These layouts are not giving the required display. I have played with the different layouts. After putting the layout code along with the setcentralwidget, then it had worked when I had used on the mainwindow.

[SGaist]

So a table view on top of an add button on top of a delete button ? That's what QVBoxLayout is for.

[saitej]

@SGaist I want the display as in image 2. The table occupies the entire window. I am getting as shown in Image 1

[SGaist]

If you get what's on image1 it means that you didn't apply the QVBoxLayout properly. With it these buttons can't be side by side unless:

1. They are in a QHBoxLayout
2. Not in a layout at all but you put them side by side on the widget in designer.

[saitej]

@SGaist
The buttons are not the problem I want the tableview to occupy the entire dock but it is coming in a fixed size how much ever i increase the dock size.
Image

[mrjj]

hi
Here is a sample that uses a UI and scale with the dock
https://www.dropbox.com/s/6ipc9ap6hjvcpr9/ilovemydocks.zip?dl=0
Maybe it can provide some hint.
Note the UI is widget based for this to work.