Thanks. It work
   
    ----- Jesse McGrew wrote: ----
   
    SMK wrote
    > What is the equivalent of Lock keyword in MC+
   
    Monitor::Enter() and Leave() with a __finally block
   
    Jess

A nice way of wrapping it might be something similar to this:

#using <mscorlib.dll>
#include <vcclr.h>
using namespace System;

template <typename T>
struct sync_lock
{
private: gcroot<T> v_t;
public:
  sync_lock(T t) {
     v_t = t;
     System::Threading::Monitor::Enter(v_t);
  }
  ~sync_lock() {
     System::Threading::Monitor::Exit(v_t);;
  }
};

__gc class MyClass
{
private: int m_v;
public:
void DoIt()
{
          sync_lock<MyClass*> lock(this);
    m_v += 5;
}
};

int main()
{
MyClass* c = new MyClass();
c->DoIt();
}