int _tmain(int argc, _TCHAR* argv[])
{
IUnknown* pU = CreateInstance();
IComponent *pI = NULL;
pU->QueryInterface(IID_IComponent, (void**)&pI);
pI->Print("testing");
char c;
cin >> c;
pI->Release();
cin >> c;
return 0;
}
int main()
{
HRESULT hr ;
// Get the name of the component to use.
char dllname[20];
cout << "Enter the filename of component's server [Component.dll]:";
cin >> dllname;
cout << endl<<endl;
// calling the CreateInstance function in the DLL in order to create the component.
TRACE("Getting an IUnknown interface pointer...") ;
IUnknown* pIUnknown = CallCreateInstance(dllname) ;
if (pIUnknown == NULL)
{
TRACE("CallCreateInstance Failed!.");
return 1;
}
TRACE("Succeeded getting IUnknown interface.");
TRACE("Quering the component's interface by QueryInterface method...");
IComponent* pIComponent ;
hr = pIUnknown->QueryInterface(IID_IComponent, (void**)&pIComponent);
if (SUCCEEDED(hr))
{
TRACE("Succeeded getting IComponent interface.");
TRACE("Calling the Print method of the component...\n");
std::chrono::time_point<std::chrono::system_clock> start, end;
int sum = 0;
long long average = 0;
cout << "The initial value of 'sum' is: " << sum << endl << endl;
cout << "Calling the server's increment function 1000 times ... ";
start = std::chrono::system_clock::now();
for(int i = 0; i < 1000; i++)
{
sum = pIComponent->increment(sum);
}
end = std::chrono::system_clock::now();
cout << "Complete." << endl << endl;
std::chrono::duration<double> elapsed_seconds = end - start;
std::time_t end_time = std::chrono::system_clock::to_time_t(end);
std::cout << "finished computation at " << std::ctime(&end_time)
<< "Average Response Time: " << elapsed_seconds.count()<< "s\n";
cout << "The current value of 'sum' is now: " << sum << endl << endl;
cout << endl;
pIComponent->Release() ;
}
else
{
TRACE("Unable to get the inteface.");
}
TRACE("Releasing the Component...");
pIUnknown->Release() ;
return 0 ;
}