Hi everyone,
I am not able to render a custom widget, like a QLabel in a QTreeView cell
with a custom delegate. The delegate code is this:
*Header*
#ifndef MESSAGESDELEGATE_H
#define MESSAGESDELEGATE_H
#include <QLabel>
#include <QStyledItemDelegate>
class MessagesDelegate : public QStyledItemDelegate
{
Q_OBJECT
public:
explicit MessagesDelegate(QObject* parent = nullptr);
void paint(QPainter *painter, const QStyleOptionViewItem &option, const
QModelIndex &index) const override;
private:
mutable QLabel _label;
};
#endif
*Source*
#include "MessagesDelegate.h"
#include <QLabel>
MessagesDelegate::MessagesDelegate(QObject* parent)
: QStyledItemDelegate(parent)
{
}
void MessagesDelegate::paint(QPainter* painter,
const QStyleOptionViewItem& option,
const QModelIndex& index) const
{
_label.setText("This is a test message");
_label.render(painter);
}
and then:
_messageDelegate = new MessagesDelegate(this);
_messageTreeView->setItemDelegateForColumn(MessageColumn, _messageDelegate);
But I am seeing my QTreeView cell empty instead of seeing the above "This a
test message" in there. Do you know what I may be doing wrong?
I took this idea from here:
https://groups.google.com/g/python_inside_maya/c/FXB_V0llUpY/m/mpJOQkyJCgAJ
Thank you in advance.
Kind regards,
László
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