QTreeWidget icons issue - c++

Question

I want to display users avatars to treewidget items as icons. I get avatars path and other users info from the database and store it in QVector with the structure.
MyDB *employeesAccountsDB = new MyDB();
connect(employeesAccountsDB, &MyDB::accountInfo, [this](QVector<AccountData> dataVector) {
for (int i = 0; i < dataVector.size(); i++) {
QTreeWidgetItem *item = new QTreeWidgetItem(treeWidget);
item->setSizeHint(0, QSize(40, 40));
item->setText(0, dataVector[i].avatarPath);
item->setText(1, dataVector[i].username);
item->setText(2, dataVector[i].email);
item->setText(3, dataVector[i].group);
emit avatarPath(dataVector[i].avatarPath);
}
dataVector.clear();
});
Info is a GUI class.
NetManager *avatarNetManager = new NetManager();
connect(this, &Info::avatarPath, avatarNetManager, &NetManager::getAvatar);
connect(avatarNetManager, &NetManager::image, [this](QPixmap avatar, int index) {
QIcon avatarIcon;
if (!avatar.isNull()) {
avatarIcon = avatar.scaled(80, 80);
} else {
avatarIcon = QPixmap(":/Icon/default_avatar.png").scaled(80, 80);
}
qDebug() << index;
treeWidget->topLevelItem(index)->setIcon(0, avatarIcon);
});
int index = 0; // initialized as global variable in the `NetManager` constructor
void NetManager::getAvatar(QString path, int index)
{
networkManager = new QNetworkAccessManager(this);
networkManager->get(QNetworkRequest(QUrl(path)));
connect(networkManager, &QNetworkAccessManager::finished, [this](QNetworkReply *avatarNetReply) {
QPixmap avatarPixmap;
avatarPixmap.loadFromData(avatarNetReply->readAll());
emit image(avatarPixmap, index);
index++;
avatarNetReply->close();
avatarNetReply->deleteLater();
networkManager->deleteLater();
emit finished();
});
}
For example, first icon is Ok, third icon should be on the second item and second icon should be on third item.
I need something to maintain the order of the icons.
All works well but the avatars don't relate to the users. Any ideas how to collect and retrieve them to the appropriate user? Thanks.
Updated:
INDEX: 2
QPixmap(QSize(1280, 720),depth=32,devicePixelRatio=1,cacheKey=0xee000002d0)
INDEX: 0
QPixmap(QSize(380, 400),depth=32,devicePixelRatio=1,cacheKey=0xf000000190)
INDEX: 1
QPixmap(QSize(277, 400),depth=32,devicePixelRatio=1,cacheKey=0xf200000190)
INDEX: 0
QPixmap(QSize(380, 400),depth=32,devicePixelRatio=1,cacheKey=0xed00000190)
INDEX: 2
QPixmap(QSize(1280, 720),depth=32,devicePixelRatio=1,cacheKey=0xf0000002d0)
INDEX: 1
QPixmap(QSize(277, 400),depth=32,devicePixelRatio=1,cacheKey=0xf200000190)
Indices change every time application launches.
Code:
MyDB *employeesAccountsDB = new MyDB();
connect(employeesAccountsDB, &MyDB::accountInfo, [this](QVector<AccountData> dataVector) {
for (int i = 0; i < dataVector.size(); i++) {
QTreeWidgetItem *item = new QTreeWidgetItem(treeWidget);
item->setSizeHint(0, QSize(40, 40));
item->setText(0, dataVector[i].avatarPath);
item->setText(1, dataVector[i].username);
item->setText(2, dataVector[i].email);
item->setText(3, dataVector[i].group);
emit avatarPath(dataVector[i].avatarPath, i);
}
dataVector.clear();
});
void NetManager::getAvatar(QString path, int index)
{
networkManager = new QNetworkAccessManager(this);
networkManager->get(QNetworkRequest(QUrl(path)));
connect(networkManager, &QNetworkAccessManager::finished, [this, index](QNetworkReply *avatarNetReply) {
QPixmap avatarPixmap;
avatarPixmap.loadFromData(avatarNetReply->readAll());
emit image(avatarPixmap, index);
avatarNetReply->close();
avatarNetReply->deleteLater();
networkManager->deleteLater();
emit finished();
});
}
NetManager *avatarNetManager = new NetManager();
connect(this, &Info::avatarPath, avatarNetManager, &NetManager::getAvatar);
connect(avatarNetManager, &NetManager::image, [this](QPixmap avatar, int index) {
QIcon avatarIcon;
if (!avatar.isNull()) {
avatarIcon = avatar.scaled(80, 80);
} else {
avatarIcon = QPixmap(":/Icon/default_avatar.png").scaled(80, 80);
}
qDebug() << index;
treeWidget->topLevelItem(index)->setIcon(0, avatarIcon);
});

Answer 1

I have fixed it by QString variable to hold the avatar path and QStringList to hold other user info and when image is retrieved from the path I do the following:
MyDB *employeesAccountsDB = new MyDB();
connect(employeesAccountsDB, &MyDB::accountInfo, [this](QPixmap avatar, QStringList accountInfo) {
QIcon avatarIcon;
if (!avatar.isNull()) {
avatarIcon = avatar.scaled(80, 80);
} else {
avatarIcon = QPixmap(":/Icon/default_avatar.png").scaled(80, 80);
}
QTreeWidgetItem *item = new QTreeWidgetItem(treewidget);
item->setIcon(0, avatarIcon);
item->setSizeHint(0, QSize(40, 40));
for (int i = 0; i < accountInfo.size(); i++) {
item->setText(i, accountInfo.at(i));
}
});
All works well.