Inheritance problem...

I am having a few weird inheritance problems, which I don''t seem to be able to solve. I always figured that use a virtual function in the base class, would have it overwritten when it''s derived. Since I did this(below), somehow it doesn''t call the functions in the derived class.

class CBase
{
public:
    CBase();
    ~CBase();
    virtual void X(int i, int n);
};

class CDerived : public CBase
{
public:
    CDerived();
    ~CDerived();
    virtual void X(int i, int n);
};

class CApp : public CDerived
{
public:
    CApp();
    ~CApp();
    void X(int i, int n);
};

CApp App;
App.X(1, 1);
 

That code results in CDerived::X(int i, int n) being called, instead of my CApp::X() function, why is this? Toolmaker

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