Meet problem when use "QTreeWidgetItem::DontShowIndicator"

nan3113

when I use setChildIndicatorPolicy(QTreeWidgetItem::DontShowIndicator) with a node, then the node's children can't be shown, collapse/expand can't be used, but I just want minus/plus sign dont show.
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TreeWidgetItem *root=tree->invisibleRootItem();
myDeviceItem = new QTreeWidgetItem(root);
myDeviceItem->setChildIndicatorPolicy(QTreeWidgetItem::DontShowIndicator);
myDeviceItem->setText(0,"My Devices");
myDeviceItem->setIcon(0,QIcon(":/icons/house.ico"));

publishItem = new QTreeWidgetItem(myDeviceItem);
publishItem->setChildIndicatorPolicy(QTreeWidgetItem::DontShowIndicator);
publishItem->setText(0,"Publish");
publishItem->setIcon(0,QIcon(":/icons/right.ico"));

subscribeItem = new QTreeWidgetItem(myDeviceItem);
subscribeItem->setChildIndicatorPolicy(QTreeWidgetItem::DontShowIndicator);
subscribeItem->setText(0,"Subscribe");
subscribeItem->setIcon(0,QIcon(":/icons/left.ico"));

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Edit: Please wrap your code in @ tags; mlong

sigrid

Instead of using setChildIndicatorPolicy(QTreeWidgetItem::DontShowIndicator), you can try modifying the drawing of the branches to not draw the minus/plus sign in the style by reimplementing "drawPrimitive()":http://doc.qt.nokia.com/4.7/qstyle.html#drawPrimitive and modifying the "QStyle::PE_IndicatorBranch":http://doc.qt.nokia.com/4.7/qstyle.html#PrimitiveElement-enum element. Does doing so help?

nan3113

Thanks,sigrid, I define a class inheriting QWindowsStyle,and then reimplement its drawPrimitive() as below:
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void IndicatorNoneStyle::drawPrimitive(PrimitiveElement pe, const QStyleOption *opt, QPainter p, const QWidget w) const
{
QStyleOption op = const_cast<QStyleOption>(opt);
op->state &= ~ QStyle::State_Children;
QWindowsStyle::drawPrimitive(pe, op, p, w);
}

@

that works correctly. cool you are