我如何从 QWidget 和 QThread 继承？
我有一个像这样的类
class GUI : public QWidget, public QThread
当我执行上述操作时，我收到有关连接信号的错误。 错误显示对“connect”的引用不明确。有没有办法同时继承两者？
谢谢
I have a class like this
class GUI : public QWidget, public QThread
When I do the above i get errors about connect signals. The error says Reference to "connect" is ambiguous. Is there a way to inherit from both?
Thank you
如果你对这篇内容有疑问，欢迎到本站社区发帖提问 参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。
绑定邮箱获取回复消息
由于您还没有绑定你的真实邮箱，如果其他用户或者作者回复了您的评论，将不能在第一时间通知您！
发布评论
评论（3）
您不能从多个 QObject 继承。
您可以继承其中一个并将另一个设为成员变量并从那里开始工作。
您已命名您的类 GUI - 这是您程序的主 GUI 吗？请参阅 Qt 示例文件夹中的示例 - 他们在 GUI 上都有示例程序 和线程。
You cannot inherit from multiple QObjects.
You can inherit from one and make the other a member variable and work from there.
You've named your class GUI - is this the main GUI of your program? See the examples in the Qt examples folder - they have sample programs on both GUI's and Threads.
你不能。
QWidget和QThread都（非虚拟地）继承自QObject。因此，您没有虚拟派生，因此没有 QObject 的两个副本，这会使编译器感到困惑。QObject就是专门这样设计的。请参阅：据称有些人绕过了这个（现在找不到链接，但它在 Google 上，我有两周前同样的麻烦），但充其量是不安全的。
编辑：最好的方法可能是让另一个对象继承 QThread 并将该对象保留为 GUI 类中的成员。这是大多数人在这件事上采取的解决方法。
You can't. Both
QWidgetandQThreadinherit (non-virtually) fromQObject. You therefore do not have virtual derivation, thus two copies ofQObject, which confuses the compiler.QObjectwas specifically designed this way. See:There are some who allegedly went around this (can't find the link right now, but it's out there on Google, I had the same trouble two weeks ago), but it is unsafe at best.
Edit: the best way would probably be to have another object inherit from QThread and keep that object as a member in your
GUIclass. That is the sort of workaround most people do in this matter.QWidgets和 GUI 相关对象不能位于与应用程序主线程不同的线程中。您不应该同时继承它们。您还不能调用小部件的moveToThread()函数。QWidgetsand GUI related objects con not be in different threads than the application main thread. You should not inherit both of them. You can not also call themoveToThread()function of a widget.