Stop autoscrolling of QScrollArea

[Viki_Dev]

Hello folks,
I have been trying to insert more than 50-100 item from the top in QScrollarea layout, but the strange thing happens, it scrolls fastly upward automatically. I need a solution to stop this automatic scrolling on inserting widgets in it... Can anybody help?

[Ratzz]

@Viki_Dev

You can set the vertical slider position to what you want to scroll using setSliderPosition .

http://doc.qt.io/archives/qt-4.8/qabstractscrollarea.html#verticalScrollBar

[Viki_Dev]

@Ratzz
Actually, when we insert from the top, slider position is already 0 & resetting it to 0 won't work

[Ratzz]

@Viki_Dev
Can you show what are you trying to do?

[Viki_Dev]

@Ratzz
Ok I am sending you details in a file, plz guide
[0_1524807757205_QtLazyLoading.rar](Uploading 100%)

[Ratzz]

@Viki_Dev
Where is the file?

[Viki_Dev]

this is loaded on clicking - pageup

this is loaded on clicking - pagedown

middle items are not loaded, the are loaded as scrolling, but when scrolling from bottom to top, scrollarea moves automatically up. it should not do so..

[Ratzz]

@Viki_Dev

Can you show what you do in "page up" and "page down" ?

[Viki_Dev]

@Ratzz
There is a timer which calls a updateMainArea method which refreshes these 600 items in every 10ms, on page up & page down, I am just changing start & end index, due to which items are getting loaded from top/bottom as required & also increased as index changed

void Widget::on_upButton_clicked()
{
clearScrollView();
m_iStartIndex = 0;
m_iEndIndex = m_iNumberOfVisibleRecord;
}

void Widget::on_downButton_clicked()
{
clearScrollView();
m_iStartIndex = MAX_RECORD_COUNT-m_iNumberOfVisibleRecord;
m_iEndIndex = MAX_RECORD_COUNT;
updateMainArea();
ui->scrollArea->verticalScrollBar()->setValue(ui->scrollArea->verticalScrollBar()->maximum());
}

Is there a way I can pass you this project.. ? I am new to this website...

[SGaist]

Hi,

Out of curiosity, why not use a QTableView for that ?

[Viki_Dev]

@SGaist lots of implementation have been done already, it not good to change now

[Diracsbracket]

@Viki_Dev

@Viki_Dev said in Stop autoscrolling of QScrollArea:

Is there a way I can pass you this project

Hi,
doesn't the Upload File option work when you edit a post (see image)?

[Viki_Dev]

@Diracsbracket [0_1525958935598_QtLazyLoading.rar](Uploading 100%)
No its saying, not have enough rights..

[Diracsbracket]

@Viki_Dev said in Stop autoscrolling of QScrollArea:

not have enough rights

That's odd...
As a workaround, you could also use some temporary storage and pass the link.
For example, https://expirebox.com/. Files will only be available for download for 2 days though. There are plenty of other possibilities out there it seems.