class ISystem {
public:
	virtual void SysTest() = 0;
};

class CSystem : public ISystem {
public:
	void SysTest() {
		MessageBox(NULL,"System WORKS", "System WORKS", MB_OK);
	}
};

class TestInterface {
public:
	virtual void SomeFunction() = 0;
};

class TestImplementation : public TestInterface, public CSystem {
public:
	void SomeFunction() {
		MessageBox(NULL,"TestInterface WORKS", "TestInterface WORKS", MB_OK);
	}
};

//then I want to do some dynamic casts:

ISystem* pSystem = new TestImplementation();
//For what I know this should work shouldnt it?

TestInterface* pTestInterface = dynamic_cast<TestInterface*>(pSystem);
//And if not that then at least this one?

CSystem* pSystem2 = new TestImplementation();
TestInterface* pTestInterface = dynamic_cast<TestInterface*>(pSystem2);

//the ISystem* tmpSys interface pointer is filled...if(tmpSys != NULL) {	//now test if the interface can be used?	tmpSys->SysTest();	MessageBox(NULL,"The ISystem pointer works fine!","test",MB_OK);		//try casting it to the desired interface	TestInterface* pTestInterface = dynamic_cast<TestInterface*>(tmpSys);	MessageBox(NULL,"The dynamic cast works fine!","1",MB_OK);		if(pTestInterface != NULL) {		pTestInterface->Message();	}}