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// Client.cpp
#include <iostream.h>
#include <objbase.h>
#include "Interface.h"
#include "Create.h"
void TRACE(const char* msg) { cout << "Client :\t" << msg <<endl;}
//--------//
// Client
//--------//
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;
cout<<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...");
pIComponent->Print("COM from scratch.") ; //using the component's functionality
pIComponent->Release() ;
}
else
{
TRACE("Unable to get the inteface.");
}
TRACE("Releasing the Component...");
pIUnknown->Release() ;
return 0 ;
}
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