Qt保存文件

#include <QApplication>
#include <QFileDialog>
#include <QFile>
#include <QTextStream>
#include <QMessageBox>

void saveFileWithDialog() {
    QString fileName = QFileDialog::getSaveFileName(nullptr, "保存文件", "", "文本文件 (*.txt)");
    if (fileName.isEmpty()) {
        // 用户取消了保存操作
        return;
    }

    QFile file(fileName);
    if (!file.open(QIODevice::WriteOnly | QIODevice::Text)) {
        QMessageBox::warning(nullptr, "错误", "无法保存文件：" + file.errorString());
        return;
    }

    QTextStream out(&file);
    out << "这是一些要保存的内容";
    file.close();
}

int main(int argc, char *argv[]) {
    QApplication app(argc, argv);

    saveFileWithDialog();

    return app.exec();
}

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