QcomboBox hide the drop down arrow

[Mrdata]

There's any way to hide the drop down arrow of a QcomboBox ?

I've small cells (with QcomboBox's) in a qTableview, and when i click on them all cell size is occupied with the drop down arrow hiding the first item of the list which looks ugly.

I hope i had explained this well, if not i can attach some screenshots. Thanks in advance.

[RSX]

QComboBox is mainly all about that dropdown arrow, so I guess you can't hide it. But you can use QLineEdit + QCompleter which shall give you basically an effect you are expecting.

[Mrdata]

Just took a look at QCompleter but i guess it won't work in this case, my QCombobox list only have Icon images and QCompleter seems to be only for text? correct me if i'm wrong?

[squidge]

QCompleter isn't a widget (it doesn't inherit QWidget) but its useful if you want a drop down list of results (for a combobox, for example).

Maybe you can override the paintEvent of QComboBox, or perhaps use a QLineEdit + QListView if you want to do all the work yourself.

[helius]

It's simply!

yourCombo->setStyleSheet ("QComboBox::drop-down {border-width: 0px;} QComboBox::down-arrow {image: url(noimg); border-width: 0px;}");

Look at 'image: url(noimg)' - "noimg" just dummy name, not really link to image, Qt cant load it and there is no fucking arrow!

For hiding border use the 'border-width' property.

Profit

[Judge Gazza]

I know this is an old thread, but it's one of the first (and few) that kept coming up while I was googling for an answer.

I ended up deriving my own combo box from QComboBox and overrode the paintEvent() function as shown below.
This was done on QT 5.2.1

///////////////////////////////////////////////////////////////////////////////////////////////////
/// This class is a custom QComboBox which does NOT display the down arrow. The down arrow takes
/// a lot of real estate when you're trying to make them narrow. So much real estate that you can't
/// see short lines of text such as "CH 1" without the digit cut off. The only thing that this
/// custom widget does is to override the paint function. The new paint function draws the combo
/// box (using all style sheet info) without the down arrow.
///////////////////////////////////////////////////////////////////////////////////////////////////
class tcNoArrowComboBox : public QComboBox
{
    Q_OBJECT
public:
    tcNoArrowComboBox (QWidget *parent) : QComboBox(parent) {}
    void  paintEvent (QPaintEvent *ev);
};
 
void tcNoArrowComboBox::paintEvent (QPaintEvent *ev)
{
    QPainter p;
    p.begin (this);
    QStyleOptionComboBox opt;
    opt.initFrom (this);
    style()->drawPrimitive (QStyle::PE_PanelButtonBevel, &opt, &p, this);
    style()->drawPrimitive (QStyle::PE_PanelButtonCommand, &opt, &p, this);
    style()->drawItemText (&p, rect(), Qt::AlignCenter, palette(), isEnabled(), currentText());
    p.end();
}

///////////////////////////////////////////////////////////////////////////////////////////////////
/// This class is a custom QComboBox which does NOT display the down arrow. The down arrow takes
/// a lot of real estate when you're trying to make them narrow. So much real estate that you can't
/// see short lines of text such as "CH 1" without the digit cut off. The only thing that this
/// custom widget does is to override the paint function. The new paint function draws the combo
/// box (using all style sheet info) without the down arrow.
///////////////////////////////////////////////////////////////////////////////////////////////////
class tcNoArrowComboBox : public QComboBox
{
    Q_OBJECT
public:
    tcNoArrowComboBox (QWidget *parent) : QComboBox(parent) {}
    void  paintEvent (QPaintEvent *ev);
};

void tcNoArrowComboBox::paintEvent (QPaintEvent *ev)
{
    QPainter p;
    p.begin (this);
    QStyleOptionComboBox opt;
    opt.initFrom (this);
    style()->drawPrimitive (QStyle::PE_PanelButtonBevel, &opt, &p, this);
    style()->drawPrimitive (QStyle::PE_PanelButtonCommand, &opt, &p, this);
    style()->drawItemText (&p, rect(), Qt::AlignCenter, palette(), isEnabled(), currentText());
    p.end();
}

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[ForestDweller2]

Using styleSheet:

QComboBox::down-arrow { image: none; }