QFileDialog按名称/大小排序

直接上代码

QFileDialog dialog;
 dialog.setOption(QFileDialog::DontUseNativeDialog);
 auto treeView = dialog.findChild<QTreeView*>(QString("treeView"),Qt::FindChildrenRecursively);
 if(treeView){
     QStringList headerContents = getHeaderLabels(treeView);
     qDebug()<<"header is "<< headerContents;
     //header is ("Name", "Size", "Type", "Date Modified")
     treeView->model()->sort(headerContents.indexOf("Name"), Qt::AscendingOrder);
 }

 if (dialog.exec() == QDialog::Accepted) {
     // 处理选择的文件
 }

QStringList getHeaderLabels(QTreeView *treeView) {
    QStringList headerLabels;
    if (treeView) {
        auto model = treeView->model();
        if (model) {
            for (int i = 0; i < model->columnCount(); ++i) {
                QString headerText = model->headerData(i, Qt::Horizontal).toString();
                headerLabels << headerText;
            }
        }
    }
    return headerLabels;
}