Visual Studio编译器警告C4250（'class1'：继承'class2 ::成员'通过dominance） [英] Visual Studio Compiler warning C4250 ('class1' : inherits 'class2::member' via dominance)

问题描述

以下代码生成警告C4250。我的问题是，最好的解决方案是什么？

The following code generates warning C4250. My question is, what's the best solution to it?

class A
{
  virtual void func1();
}

class B : public A
{
}

class C : public A
{
  virtual void func1();
}

class D : public B, public C
{
}

int main()
{
  D d;
  d.func1(); // Causes warning
}

根据我所阅读的内容，这样做：

According to what I've read it should be possible to do this:

class D : public B, public C
{
  using B::func1();
}

但实际上并没有做任何事情。我目前解决的方式是：

But, this doesn't actually do anything. The way I've currently solved it is:

class D : public B, public C
{
  virtual void func1() { B::func1(); }
}

每个人对此有何看法？

推荐答案

您尝试继承A类的公共虚拟？我认为应该解决它。

Did you try to inherit public virtual from class A? I think it should solve it.

    class B :public virtual A;
    class C :public virtual A;
    class D : public virtual B, public virtual C;

虚拟继承假设要解决歧义。

The virtual inheritance suppose to solve the ambiguity.

这篇关于Visual Studio编译器警告C4250（'class1'：继承'class2 ::成员'通过dominance）的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！