QTreeWidget row height
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Hi,
I'm having trouble getting the row heights to redraw immediately. They will redraw correctly when another row is added or the window is resized. I've tried creating a custom delegate and using setItemDelegateForRow, as well as setting the individual widgets sizeHint. Any suggestions? Seen several other similar questions googling, but just can't seem to resolve this.
Thanks in advance!
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class RowDelegate: public QStyledItemDelegate
{
public:
RowDelegate(){}private:
QSize sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const override;
};class TreeWidget: public QWidget
{
public:
TreeWidget(QWidget* pParent);private Q_SLOT:
void onAddRow();private:
QVBoxLayout m_groupLayout;
QTreeWidget m_treeWidget;
QPushButton m_addRow;
};TreeWidget::TreeWidget(QWidget* pParent)
{
setLayout(&m_groupLayout);
m_groupLayout.addWidget(&m_treeWidget);QTreeWidgetItem *pRow=new QTreeWidgetItem();
m_treeWidget.insertTopLevelItem(0, pRow);m_treeWidget.setItemWidget(pRow, 0, &m_addRow);
m_addRow.setText("Add Row");connect(&m_addRow,&QPushButton::clicked,this,&TreeWidget::onAddRow);
}void TreeWidget::onAddRow()
{
QTreeWidgetItem *pRow=new QTreeWidgetItem();
m_treeWidget.insertTopLevelItem(m_treeWidget.topLevelItemCount()-1,pRow);//append before buttons
m_treeWidget.setItemWidget(pRow,0,new QLabel("blank row"));
m_treeWidget.setItemDelegateForRow(m_treeWidget.topLevelItemCount()-2,new RowDelegate());
pRow->setSizeHint(1,QSize(50,55));//was setting item widget sizehint for calculating TreeWidget sizeHint
updateGeometry();
}QSize RowDelegate::sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const
{
return QSize(50,55);
}
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