Copying values from base class to derived class

Didnt want to put a really long title, continuing – without modifying the base class and without copying one by one.

Lets say the base is CClient, but I dont want to add or remove anything:

class CClient
{
public:
    void (*Connect)();
    void (*Disconnect)();

    bool m_bIsConnected;
};

And say this is derived CClientHook.

class CClientHook : public CClient
{
public:
    bool Setup(bool hook);

    bool m_bIsHooked;
};

How can I copy values from CClient object to CClientHook object safely? Sorry for weird wording.

EDIT: To clarify, there are two objects and no, Connect and Disconnect arent supposed to be methods.

CClient g_Client;
CClientHook g_ClientHook;

>Solution :

Given

CClient a;
CClientHook b;

There are at least two options:

• static_cast<CClient &>(b) = a;
• b.CClient::operator=(a);