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    <p>You need to look into <a href="http://qt-project.org/doc/qt-4.8/layout.html" rel="nofollow noreferrer">Qt's layout system</a> - using layouts will handle automatically resizing your objects based on the size of their parent.</p> <p>A combination of using <a href="http://qt-project.org/doc/qt-5.0/qtwidgets/qwidget.html#sizePolicy-prop" rel="nofollow noreferrer"><code>QWidget::setSizePolicy()</code></a> and <a href="http://qt-project.org/doc/qt-5.0/qtwidgets/qboxlayout.html#setStretch" rel="nofollow noreferrer"><code>QBoxLayout::setStretch()</code></a> (or more likely <code>QBoxLayout::insertWidget(..., int stretch = 0, ...)</code>) will allow you to acheive the behaviour you refer to where only certain objects expand to fill available space, while others remain a constant size.</p> <p><strong>Addressing the image you've given above as an example:</strong></p> <p><img src="https://i.stack.imgur.com/1IVa1.png" alt="Example of solution in QtDesigner"></p> <p>Aside from dragging and dropping objects into the form, to achieve this solution I have:</p> <ul> <li>Set the vertical <code>sizePolicy</code> of <code>textEdit</code> to <code>Fixed</code>.</li> <li>Set a height in <code>textEdit</code>'s <code>minimumSize</code> for the <code>sizePolicy</code> to use.</li> <li>Set <code>layoutStretch</code> in <code>centralWidget</code> to <code>1,0</code>, i.e. assign the minimum possible space for the elements contained in <code>horizontalLayout</code> and give any remaining space to <code>tableWidget</code>.</li> </ul>
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    1. POMake QTableWidget expand when dialog window size is changed
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    1. USRalph Bisschops
    1. USsjwarner
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    1. COQGridLayout *layout=new QGridLayout(); ui->tableWidget->setSizePolicy(QSizePolicy::Expanding); layout->addWidget(ui->tableWidget,0,0,-1,-1,Qt::AlignVCenter); layout->addWidget(ui->textEdit_2,1,0,1,2,Qt::AlignLeft); layout->addWidget(ui->cancel,1,1); layout->addWidget(ui->ok,1,2); this->setLayout(layout); but this doesnt create what i want. each of the widgets doesnt fill up the space available. only a small box is created for each widget. How do i fill the widget to each cell in the grid? and QWidget setSizePolicy() gave me error of its private and cant be used..
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      1. USPeterG
    2. COsorry about the comment formatting...
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    3. COYou've got the right idea, but if you're using Qt Designer to lay out your widgets, you can [add the layouts and specify stretch factors etc](http://doc.qt.nokia.com/latest/designer-layouts.html), as well as setting sizePolicies (using the property editor) all without leaving Designer. The other advantage to that is that you'll be able to see the effect of all the changes you're making without having to build your application.
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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

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