Mixing managed and unmanaged programs

[Kristof Coucke]

Hello,

I have one unmanaged DLL which has a function which requires a parameter void * &data which will be adapted by the function.
In the main program (which uses managed c++) I create a managed byte array with the following line:
array<System::Byte> ^ byteArray = gcnew array<System::Byte>(12589440);
The question is how can I convert the managed object "byteArray" to a pointer "void *"?

I've tried void * mPtr = &byteArray[0]; which does not work :-(

I've been searching a while, but I can't seem to find it.

Any comments are greatly appreciated!

Kristof

[weaknessforcats]

Have you read the MSDN topics on interoperability?

[Kristof Coucke]

Have you read the MSDN topics on interoperability?

Jep. I've read a lot, and I actually already had the sollution but I was on the wrong trail due to another error... (caused by Vista by the way)

Anyway, for all the other people who might bump on this post, the sollution is:

array<System::Byte> ^ arr; //Declaring managed pointer
arr = gcnew array<System::Byte>(614400); // allocating memory
pin_ptr<System::Byte> arrptr = &arr[0]; // pin ptr "fixes" address
void * mptr = arrptr; // Just for compatibility with the other program

Any improvements are more then welcome!