您不能.

C ++标准不允许匿名临时绑定到引用，尽管某些编译器允许将其作为扩展.(允许绑定到 const 引用 .)

The C++ standard does not allow the binding of an anonymous temporary to a reference, although some compilers allow it as an extension. (Binding to a const reference is allowed.)

除了已经存在的解决方法之外，如果可以将函数更改为采用 const QImage& ，那么效果会更好.

Aside from the workaround you already have, if you can change the function to take const QImage& then that would be better.