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void MainWindow::on_pushButton_3_clicked()
{
mylist=new friendlist(this);
list_friend.append(mylist);
// ui->listView->setIndexWidget(num,list_friend.at(num));
// num++;
ui->listView->setEditTriggers(QAbstractItemView::NoEditTriggers); // 不允许编辑
ui->listView->setGridSize(QSize(1667,35));
ui->listView->setWordWrap(false);
QStandardItemModel *model = new QStandardItemModel(ui->listView);
ui->listView->setModel(model);
for(int i = 0; i < 5; i++)
{
mylist=new friendlist(this);
list_friend.append(mylist);
QStandardItem *item = new QStandardItem(QString::number(i));
model->appendRow(item);
QModelIndex index = model->indexFromItem(item);
ui->listView->setIndexWidget(index, list_friend.at(i));
}
}