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Thread: Popup of QComboBox wider than combobox?

  1. #1
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    Question Popup of QComboBox wider than combobox?

    Hi, I have a combobox with a fixed size (it is inside a QTableWidget cell) and enough entries to need a scrollbar.
    I would like the popup of the combobox to be wider than the combobox itself (see attached image for a rough example). Is this possible?
    I tried
    - QComboBox::setSizeAdjustPolicy (QComboBox::AdjustToContents), but this also changes the width of the combobox and not only the popup's width
    - QAbstractItemView::setTextElideMode (Qt::ElideNone) on the view() of the combobox. Now the text of the entries isn't elided anymore but the size of the popup does not change, so the scrollbar is above part of the text
    - QWidget::setGeometry() on the view(). It looks like this resized something internally, because the scrollbar disappeared, but the popup itself is still the same size, so I cannot read the whole text of the entries
    - an ItemDelegate on the view() that reimplements sizeHint(), but this had no effect at all.

    I'm out of ideas now. Is this possible at all? Any further suggestions?

    Ginsengelf

    edit: I could not set elideMode in designer, so just imagine the image without the elided text in the popup.
    Attached Images Attached Images
    Last edited by Ginsengelf; 20th October 2016 at 11:35. Reason: updated contents

  2. #2
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    Default Re: Popup of QComboBox wider than combobox?

    You can set the minWidth property of the combobox's view. One way to do this is with a stylesheet. Another way is to calculate the largest text width of all items (utilizing font metrics) and then set the width of the view accordingly. The latter needs to be done as soon as an item is added/removed.

  3. The following user says thank you to Killian for this useful post:

    Ginsengelf (21st October 2016)

  4. #3
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    Default Re: Popup of QComboBox wider than combobox?

    Thanks, this works.

    Ginsengelf

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