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QTableWidget Highlight Partial Text

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qtablewidgethighlightqt 5.5.1
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  • P Offline
    P Offline
    Punit
    wrote on 4 Nov 2016, 12:29 last edited by Punit 11 Apr 2016, 12:30
    #1

    Hello all,

    I have a search box (QLineEdit) and a QTableWidget. Now suppose if I enter the word "xyz" in search box than if any QTablewidget cell contains that specific text i.e. "xyz", I want to highlight that part of the text with yellow color. (ctrl+f behavior in QT).

    Please help. I have tried many ways to do this, but not succeeded yet.

    Thanks.

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    • V Offline
      V Offline
      VRonin
      wrote on 4 Nov 2016, 12:55 last edited by
      #2

      it's not crazy difficult, you just need to subclass QStyledItemDelegate, add a member to hold the string and reimplement the paint method to do the highlight

      "La mort n'est rien, mais vivre vaincu et sans gloire, c'est mourir tous les jours"
      ~Napoleon Bonaparte

      On a crusade to banish setIndexWidget() from the holy land of Qt

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      • P Offline
        P Offline
        Punit
        wrote on 4 Nov 2016, 13:01 last edited by
        #3

        @VRonin

        I am trying to do this. I am a newbiew, so need your assistance. Hope you can understand. Here are some rough code.

        MediaFileItemDelegate::MediaFileItemDelegate(QObject *parent) :QStyledItemDelegate(parent)
        {
        
        }
        
        MediaFileItemDelegate::~MediaFileItemDelegate()
        {
        
        }
        
        void MediaFileItemDelegate::paint(QPainter* painter, const QStyleOptionViewItem& option,const QModelIndex& index) const
        {
            QString str = qvariant_cast<QString>(index.data());
        
            painter->save();
        
            painter->setPen(Qt::NoPen);
        
           // painter->drawRect(option.rect);
        
            if(index.data().toString().contains("xyz"))
            {
                painter->setPen(Qt::blue);
                painter->drawText(option, str);
            }
            else
            {
                QStyledItemDelegate::paint(painter, option, index);
            }
        
            painter->restore();
        }
        

        Currently this code is highlighting the whole text (example: My name is xyz) and I am doing manually matching. So how can i select only xyz. Thanks

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        4 Nov 2016, 12:29

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