How can I mix the Concurrency Runtime with .NET code?

Question

I\'ve been using the Concurrency Runtime in a C++ static library, and recently wanted to use this library in a C++/CLI project, to take advantage of the Windows Form designe

Answer 1

Using ConcRT in C++/CLI is explicitly disabled in concrt.h via the statement below because it is not officially supported...

#if defined(_M_CEE)
   #error ERROR: Concurrency Runtime is not supported when compiling /clr.
#endif

You can use PInvoke to work around this as suggested above, or you can also use the pointer to implementation idiom to address this by forward declaring a 'pimpl' class and hide the dependency on concrt.h to a native .cpp file which you can then compile into a lib and link against with the header file.

e.g. in the .h file:

//forward declaration
class PImpl;

class MyClass
{
  ....
  //forward declaration is sufficient because this is a pointer
  PImpl* m_pImpl;
}

e.g. in your .cpp file which compiles into a native lib:

  #include 
  class PImpl
  {
   //some concrt class
   Concurrency::task_group m_tasks;
  }