Help with ScrollArea

lonnie

I am back again, and so close to having it working properly.

I am creating a QFrame with a QFormLayout and I dynamically add labels and edit fields . It works well until I try and add more than will fit, at which time it increases my MainWindow height. This is OK unless someone attempts to have a form that exceeds to available screen height.

In my quest to make it scrollable, like the QTreeWidget I am close but no prize. If I add more nodes to the QTreeWidget it simply creates a scrollbar and does the "right thing".

With the QForm it expands the Mainwindow.

QFrame * formFrame = new QFrame ();
QFormLayout* layout = new QFormLayout(formFrame);
formFrame->setLayout(layout);

I have this code for the ScrollArea attempt, where it attempts to make the excess rows fit by squishing everything. No scrollbars appear.

QFrame* formFrame = new QFrame();
QScrollArea* ScrollArea = new QScrollArea(formFrame);
ScrollArea->setWidgetResizable (true);
ScrollArea->setHorizontalScrollBarPolicy(Qt::ScrollBarAsNeeded);
ScrollArea->setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
QFormLayout* layout = new QFormLayout(ScrollArea);

Here are some pictures of the simple

and using ScrollArea

lonnie

@kshegunov Yes, sir it works.

I had 2 things wrong. I was setting the ScrollArea into the layout, That needs to be the form, ie formFrame and I needed to set the ScrollArea widget after I put all of my data into the layout.

QFrame* formFrame = new QFrame();

QScrollArea* ScrollArea = new QScrollArea(); //formFrame);
ScrollArea->setWidgetResizable (true);
ScrollArea->setHorizontalScrollBarPolicy(Qt::ScrollBarAsNeeded);
ScrollArea->setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);

QFormLayout* layout = new QFormLayout(formFrame);

// a whole bunch of statements that fill a label and text box and
// put them to the layout as a row.
// then this bit of magic

ScrollArea->setWidget(formFrame);

And the result is this

Thank you SO VERY MUCH. I spent a few days going forward and backward and sometimes sideways for a change.

kshegunov

QWidget * container = new QWidget();
QFormLayout * layout = new QFormLayout(container);
// ... fill up the layout

scrollArea->setWidget(container); //< Must be after the layout's been added to the container widget

Here's a complete example.

lonnie