Understanding The COM Single-Threaded Apartment Part 1

#define _WIN32_WINNT 0x0400

#include <windows.h>
#include <stdio.h>

#import "..\..\..\..\SimpleCOMObject2\Debug\SimpleCOMObject2.dll"
using namespace SIMPLECOMOBJECT2Lib;





// Notice that main() does not contain any message loop.
// The calls to the methods of ISimpleCOMObject2 still goes through.
int main()
{
  ::CoInitializeEx(NULL, COINIT_APARTMENTTHREADED);

  if (1)
  {
    ISimpleCOMObject2Ptr spISimpleCOMObject2;

    spISimpleCOMObject2.CreateInstance(__uuidof(SimpleCOMObject2));

	spISimpleCOMObject2 -> TestMethod1();
  }

  ::CoUninitialize();

  return 0;
}