CODEWITHSUNDEEP
c++qtqmainwindow
Ahmad
Ahmad

Reputation: 13406

How do I add a scroll bar to a QMainWindow that has one central widget?

How can I add a scroll bar to a QMainWindow, when this QMainWindow contains just one central widget, which is bigger than the QMainWindow size?

So that the scroll bar can be used to see different parts of this central widget.

Upvotes: 3

Views: 6746

Answers (2)

Andreas Haferburg
Andreas Haferburg

Reputation: 5510

For some reason the child widget would not render at all if it was a QWidget with a layout. It only worked after calling setWidgetResizable(true).

auto mainWidget = new QWidget();
auto scrollArea = new QScrollArea();
scrollArea->setWidget(mainWidget);
scrollArea->setWidgetResizable(true);
setCentralWidget(scrollArea);
resize(1470, 900);

QHBoxLayout* mainLayout = new QHBoxLayout(mainWidget);
...

Upvotes: 0

ianmac45
ianmac45

Reputation: 2268

Set the central widget of your QMainWindow to a QScrollArea and then set the widget of that new QScrollArea to the widget that was previously your central widget.

Remember to set the "widget resizable" property of QScrollArea to true.

Upvotes: 4

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