Managed C++ pass float *OUT as argument

Question

I make .Net wrapper for unmanaged C++ library. I need to use function with this signature:

BOOL Func ( float *OUT floatArray)

I tried this in managed C++:

float* mp = new float(10);
bool what = Func(mp);

But I got an AccessViolationException. (Attempt to read or write protected memory. This often indicates that the other memory is corrupt.) What's wrong?

This is my function in managed C++:

bool MyFunc (array<Single>^% floatArray)

I'm trying to return C# float[] with this function. Maybe there is another option to do my task.

Answer 1

在C ++中将在C ++中分配的（托管）未托管内存的大块返回给C＃似乎是一个相当糟糕的主意（谁负责释放内存（删除[]））？您在C ++中使用了System :: Array并通过'ref'传递了值（在c＃中）。