How to make only certain cells in tableview editable

IknowQT

this->setEditTriggers(QAbstractItemView::NoEditTriggers | QAbstractItemView::DoubleClicked);

I am wondering how to make only certain cells in tableview editable. For now, I use setEditTriggers to make it editable.

The problem is that all cells are editable.
But I want to make only certain cells editable.
How can I do that?

IknowQT

self-response

QWidget* usrTableDelegate::createEditor(QWidget* parent, const QStyleOptionViewItem& option, const QModelIndex& index) const
{
//QWidget* w = QStyledItemDelegate::createEditor(parent, option, index);
//QLineEdit* lineEdit = qobject_cast<QLineEdit*>(w);

usrSetupLineEdit* pEdit = new usrSetupLineEdit(parent);//qobject_cast<usrSetupLineEdit*>(lineEdit);
pEdit->SetOnlyNumber(true, true);
pEdit->SetRange(-4.0, 4.0);
pEdit->setAlignment(Qt::AlignCenter);


return pEdit;

}

void usrTableDelegate::updateEditorGeometry(QWidget* editor, const QStyleOptionViewItem& option, const QModelIndex& index) const
{
editor->setGeometry(option.rect);
}

IknowQT

void wStandardCurve::CellDoubleClicked(const QModelIndex& index)
{
	if (index.column() == 0)
	{
		//index.data().isE

		QStandardItem* cast = m_pDataModel->item(index.row(), index.column());
		usrStandardItem* item = static_cast<usrStandardItem*>(cast);

		item->setFlags(item->flags() | Qt::ItemIsEditable);
		item->setEditable(true);
		item->isEditable();
		//QString str = item->text();
		QString str = index.data().toString();
		

	}
	else if (index.column() == 2)
	{
		QStandardItem* cast = m_pDataModel->item(index.row(), index.column());
		usrStandardItem* item = static_cast<usrStandardItem*>(cast);
		
		item->setFlags(Qt::ItemIsEditable);
		item->setEditable(true);
		item->isEditable();
		QString str = item->text();

		//QString str = index.data().toString();

	}

}

I tried this way but couldn't get the result I want.

ChrisW67

If particular items in your model should not be (or are not) editable in any view then the items in the model should have the default Qt::ItemIsEditable flag removed (not added as you attempt above). You can do this calling QStandardItem::setEditable(), or through the model interface with setFlags().

If the items in the model are generally editable, but should be read only in a particular view only, then you can approach this by using a QAbstractProxyModel that changes the base model flags on selected items..

Base model <=> Proxy model <=> View

IknowQT

QWidget* usrTableDelegate::createEditor(QWidget* parent, const QStyleOptionViewItem& option, const QModelIndex& index) const
{
	QWidget* w = QStyledItemDelegate::createEditor(parent, option, index);	
	//QLineEdit* lineEdit = qobject_cast<QLineEdit*>(w);

	usrSetupLineEdit* pEdit = new usrSetupLineEdit(w);//qobject_cast<usrSetupLineEdit*>(lineEdit);
	pEdit->SetOnlyNumber(true, true);
	pEdit->SetRange(-4.0, 4.0);
	pEdit->setAlignment(Qt::AlignCenter);


	
	return pEdit;
}


I'll ask you one more thing
When double-clicking, I want to show the custom control I made.

The result does not happen inside the table cell, but outside the table cell.
How do I put it into a table?

IknowQT

self-response

QWidget* usrTableDelegate::createEditor(QWidget* parent, const QStyleOptionViewItem& option, const QModelIndex& index) const
{
//QWidget* w = QStyledItemDelegate::createEditor(parent, option, index);
//QLineEdit* lineEdit = qobject_cast<QLineEdit*>(w);

usrSetupLineEdit* pEdit = new usrSetupLineEdit(parent);//qobject_cast<usrSetupLineEdit*>(lineEdit);
pEdit->SetOnlyNumber(true, true);
pEdit->SetRange(-4.0, 4.0);
pEdit->setAlignment(Qt::AlignCenter);


return pEdit;

}

void usrTableDelegate::updateEditorGeometry(QWidget* editor, const QStyleOptionViewItem& option, const QModelIndex& index) const
{
editor->setGeometry(option.rect);
}