更正覆盖 QDataStream 运算符和链接问题

Posted 2023-02-16

【中文标题】更正覆盖 QDataStream 运算符和链接问题

【英文标题】：Correct overriding QDataStream operators and linking problems

【发布时间】：2016-04-30 08:52:35

【问题描述】：

我需要重写 QDataStream 的 >> 和

QDataStream &operator <<(QDataStream &out, const SScenarioEntry Entry)

    out.writeRawData(Entry.EntryName, sizeof(Entry.EntryName));
    out << Entry.Number;
    out << Entry.Type;
    out.writeRawData(Entry.RequestString, sizeof(Entry.RequestString));
    out.writeRawData(Entry.AnswerString, sizeof(Entry.AnswerString));
    out.writeRawData(Entry.AdditionalParams, sizeof(Entry.AdditionalParams));
    out << Entry.Timeout;
    return out;


QDataStream &operator >>(QDataStream &in, SScenarioEntry Entry)

    in.readRawData(Entry.EntryName, sizeof(Entry.EntryName));
    in >> Entry.Number;
    in >> Entry.Type;
    in.readRawData(Entry.RequestString, sizeof(Entry.RequestString));
    in.readRawData(Entry.AnswerString, sizeof(Entry.AnswerString));
    in.readRawData(Entry.AdditionalParams, sizeof(Entry.AdditionalParams));
    in >> Entry.Timeout;
    return in;

编译成功后，我得到了一些类似这样的误解：

first define here
In function `Z7qt_noopv':
multiple definition of `operator>>(QDataStream&, scnent)`

我有 2 个问题：

我必须如何定义 > 运算符才能正确工作； 如果此代码正确，如何修复链接错误。

Tnx 寻求答案。

【参考方案1】：

这很奇怪，但是通过功能公告和描述分开解决了问题。