delegate paint not draw QTreeWidget selected items correctly

[paule22]

Hello,

how can I draw each item in a QTreeView - also the column 0 should not have a "selected" colored background.
The selected color is at the moment "blue", but only column 1 should be "blue" or other QColor.

Here is the code - thanks for helping

class NoEditDelegate: public QStyledItemDelegate
{
public:
    NoEditDelegate(QObject* parent=0): QStyledItemDelegate(parent)
    {
    }
    virtual QWidget* createEditor(QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index) const
    {
        return 0;
    }
    void paint ( QPainter * painter, const QStyleOptionViewItem & option, const QModelIndex & index ) const
    {
        if (option.state == QStyle::State_Selected
                || option.state == QStyle::State_Active
                || option.state == QStyle::State_Enabled
                || option.state == QStyle::State_Item
                || option.state == QStyle::State_HasFocus)
        {
            QStyleOptionViewItem newOption(option);
            newOption.palette.setBrush(QPalette::Highlight,QColor(200,100,200));
            QStyledItemDelegate::paint(painter, newOption, index);
            return;
        }
        QStyledItemDelegate::paint(painter, option, index);
    }
};
 
void MyTreeWidget::set_items(QWidget *p)
{
    QTreeWidgetItem *__qtreewidgetitem = new QTreeWidgetItem(this);
    QTreeWidgetItem *__qtreewidgetitem1 = new QTreeWidgetItem(__qtreewidgetitem);
    __qtreewidgetitem1->setFlags(Qt::ItemIsSelectable|Qt::ItemIsEditable|Qt::ItemIsUserCheckable|Qt::ItemIsEnabled);
 
    setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOn);
    setRootIsDecorated(true);
    setAllColumnsShowFocus(false);
    header()->setDefaultSectionSize(100);
 
    QTreeWidgetItem *___qtreewidgetitem = headerItem();
    ___qtreewidgetitem->setText(1, "Wert");
    ___qtreewidgetitem->setText(0, "Eigenschaft");
 
 
// here
    NoEditDelegate *ne = new NoEditDelegate(this);
 
    setSortingEnabled(false);
    setItemDelegateForColumn(0, ne);  // <--- here
 
    QTreeWidgetItem *___qtreewidgetitem1 = topLevelItem(0);
    ___qtreewidgetitem1->setText(0, "Anzeige");
 
 
    QTreeWidgetItem *___qtreewidgetitem2 = ___qtreewidgetitem1->child(0);
    ___qtreewidgetitem2->setText(1, "1");
    ___qtreewidgetitem2->setText(0, "pageno");
 
    QTreeWidgetItem     *___qtreewidgetitem3 = new QTreeWidgetItem(this);
    insertTopLevelItem(0,___qtreewidgetitem3);
    QTreeWidgetItem     *___qtreewidgetitem4 = topLevelItem(1);
 
    ___qtreewidgetitem4->setText(0, "Bearbeiten");
}
 
void MyTreeWidget::paintEvent(QPaintEvent *event)
{
    QTreeWidget::paintEvent(event);
 
    int pHeight = font().pointSize();
    int pWidth  = columnWidth(0);
 
    QPainter p;
    p.begin(viewport());
 
    int rc = 10;
    int py = 0;
 
    for(int i = 0; i < rc; i++)
    {
        p.drawRect(1,py,pWidth-2,pHeight+5);
        p.drawRect(columnWidth(0)-1,py,columnWidth(1),pHeight+5);
        py += pHeight+5;
    }
 
    p.end();
}

class NoEditDelegate: public QStyledItemDelegate
{
public:
    NoEditDelegate(QObject* parent=0): QStyledItemDelegate(parent)
    {
    }
    virtual QWidget* createEditor(QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index) const
    {
        return 0;
    }
    void paint ( QPainter * painter, const QStyleOptionViewItem & option, const QModelIndex & index ) const
    {
        if (option.state == QStyle::State_Selected
                || option.state == QStyle::State_Active
                || option.state == QStyle::State_Enabled
                || option.state == QStyle::State_Item
                || option.state == QStyle::State_HasFocus)
        {
            QStyleOptionViewItem newOption(option);
            newOption.palette.setBrush(QPalette::Highlight,QColor(200,100,200));
            QStyledItemDelegate::paint(painter, newOption, index);
            return;
        }
        QStyledItemDelegate::paint(painter, option, index);
    }
};

void MyTreeWidget::set_items(QWidget *p)
{
    QTreeWidgetItem *__qtreewidgetitem = new QTreeWidgetItem(this);
    QTreeWidgetItem *__qtreewidgetitem1 = new QTreeWidgetItem(__qtreewidgetitem);
    __qtreewidgetitem1->setFlags(Qt::ItemIsSelectable|Qt::ItemIsEditable|Qt::ItemIsUserCheckable|Qt::ItemIsEnabled);

    setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOn);
    setRootIsDecorated(true);
    setAllColumnsShowFocus(false);
    header()->setDefaultSectionSize(100);

    QTreeWidgetItem *___qtreewidgetitem = headerItem();
    ___qtreewidgetitem->setText(1, "Wert");
    ___qtreewidgetitem->setText(0, "Eigenschaft");


// here
    NoEditDelegate *ne = new NoEditDelegate(this);

    setSortingEnabled(false);
    setItemDelegateForColumn(0, ne);  // <--- here

    QTreeWidgetItem *___qtreewidgetitem1 = topLevelItem(0);
    ___qtreewidgetitem1->setText(0, "Anzeige");


    QTreeWidgetItem *___qtreewidgetitem2 = ___qtreewidgetitem1->child(0);
    ___qtreewidgetitem2->setText(1, "1");
    ___qtreewidgetitem2->setText(0, "pageno");

    QTreeWidgetItem     *___qtreewidgetitem3 = new QTreeWidgetItem(this);
    insertTopLevelItem(0,___qtreewidgetitem3);
    QTreeWidgetItem     *___qtreewidgetitem4 = topLevelItem(1);

    ___qtreewidgetitem4->setText(0, "Bearbeiten");
}

void MyTreeWidget::paintEvent(QPaintEvent *event)
{
    QTreeWidget::paintEvent(event);

    int pHeight = font().pointSize();
    int pWidth  = columnWidth(0);

    QPainter p;
    p.begin(viewport());

    int rc = 10;
    int py = 0;

    for(int i = 0; i < rc; i++)
    {
        p.drawRect(1,py,pWidth-2,pHeight+5);
        p.drawRect(columnWidth(0)-1,py,columnWidth(1),pHeight+5);
        py += pHeight+5;
    }

    p.end();
}

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[Santosh Reddy]

Did you try this?

QTreeWidget::setSelectionBehavior(QAbstractItemView::SelectItems);

QTreeWidget::setSelectionBehavior(QAbstractItemView::SelectItems);

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