为什么 ComPtr 的函数返回与 & 不同的值？

Question

Why &(ComPtr.Get()) != ComPtr.GetAddressOf()?

I tryed to pass ID3D11ShaderResourcesView* to function and convert it to ** to use in CreateShaderResourceView, but it didnt work correct.

I realized, that the problem in 3 argument.

Answer 1

You are taking the address of the pointer that ComPtr.Get() returns. That's entirely different to the pointer to the object.

Answer 2

ComPtr.Get() returns the held pointer by value , so &(ComPtr.Get()) is taking the address of a copy of the held pointer.

ComPtr.GetAddressOf() returns the address of the held pointer itself, not a copy of it.

Had ComPtr.Get() returned the held pointer by reference instead then &(ComPtr.Get()) would take the address of the original pointer, not a copy. But it does not return a reference.