Vertical scroll bar in QComboBox

duarna

Hi all,

I have a huge QComboBox (more than 2000 items) and Qt display it with tiny arrows on top and bottom like this:

But the scrolling is too slow, I need the classic vertical scrollbar like this (picked from this post:
alt text

How is it possible ?
Thanks in advance

Arnaud

JonB

@duarna
You're not going to like this, but you simply should not populate a combobox for the user with 2000 items, it is not manageable! If you really have this many you should choose a different UI interface, e.g. use a QCompleter. Then you won't have this issue.....

mrjj

Hi
As @JonB says, 2000 items in combobox is not a good experience for the end user.
Its hard to navigate.

Anyway, you can try
ui->comboBox->view()->setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);

which gives me a scrollbar also on linux that normally only has the up/down arrows using XFCE WM.
alt text

hskoglund

I had same problem on Windows when filling a combobox with almost 4000 lines (ICD10 diagnoses for a healthcare app), it works but you have to use the "classic" vertical scrollbar.
On Windows this means you cannot use Fusion style, instead use the VistaStyle for the combobox.

duarna

Thank you all,

Indeed QCompleter is the best alternative. However

ui->comboBox->view()->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOn);

is the solution I was looking for.

Solved Vertical scroll bar in QComboBox