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How can one hide the scrollbars in a QScrollArea? Currently I use the hide() method on the scrollbars returned by QScrollArea::horizontalScrollBar() and QScrollArea::verticalScrollBar() but the space reserved for scrollbars still remains. Obviously this looks very ugly and is not space efficient. If I remove the scrollbars altogether I can no longer easily scroll to a specific point using QScrollBar::setValue().

ymoreau
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pafcu
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4 Answers4

21

You can hide it using a style sheet. Use height:0px; to hide the horizontal scroll bar and width=0px; to hide the vertical scroll bar. Like that:

horizontalScrollBar()->setStyleSheet("QScrollBar {height:0px;}");
verticalScrollBar()->setStyleSheet("QScrollBar {width:0px;}");

And voila!.No scroll bars, and you can still manipulate them using setValue().

MadeOfAir
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19

Use this code:

QAbstractScrollArea::setHorizontalScrollBarPolicy( Qt::ScrollBarAlwaysOff )
QAbstractScrollArea::setVerticalScrollBarPolicy( Qt::ScrollBarAlwaysOff )
Roman Byshko
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Mason Zhang
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    If I do it that way I can no longer scroll to a specific point using QScrollBar::setValue() (because the scrollbars do not exist) – pafcu Aug 02 '10 at 11:32
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    If you need a scroll bar when needed, use the policy: Qt::ScrollBarAsNeeded. If you want to scroll content programmatic, use QAbstractScrollArea::scrollContentsBy ( int dx, int dy ) – Mason Zhang Aug 03 '10 at 02:03
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    [Apparenly](http://doc.qt.io/qt-5/qabstractscrollarea.html#scrollContentsBy) you should call scrollbar's `setValue()` instead of `scrollContentsBy()`. – Oliver Jan 07 '17 at 18:55
3

This piece of code can do the job: 

 setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
 verticalScrollBar()->hide();
 verticalScrollBar()->resize(0, 0);
Roman Byshko
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Barry Mavin
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1

From Qt documents for scrollContentsBy():

Calling this function in order to scroll programmatically is an error, use the scroll bars instead (e.g. by calling QScrollBar::setValue() directly).

Martin Buberl
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bootchk
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