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To create a wrapper, you'd have to do something like the following:
class CSurface
{
private:
LPDIRECTDRAWSURFACE7 m_pdds;
DDPIXELFORMAT m_ddpf;
. . . // Whatever else
public:
CSurface();
~CSurface();
Create(...);
Blt(...);
. . . // Whatever else
};
class CDrawSurface : public IDirectDrawSurface7
{
private:
LPDIRECTDRAWSURFACE7 m_pDDSurface;
public:
HRESULT Blt(...)
{ return m_pDDSurface->Blt(...); }
...
};
But you must have implementations for every function defined in IDirectDrawSurface7, because these functions are declared pure virtually.
Aidan
