[윈도] 윈도우 프로시져의 멤버 함수화

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class MyClass;

LRESULT CALLBACK WndProc( HWND hHwnd, UINT msg, WPARAM wParam, LPARAM lParam )

{

LRESULT result;

static MyClass *pthis = (MyClass*) GetWindowLong( hWnd, GWL_USERDATA );

if ( pthis == NULL && msg == WM_NCCREATE )

{

void *userdata = (void*)( ((CREATESTRUCT*) lParam)->lpCreateParam );

SetWindowLong( hWnd, GWL_USERDATA, userdata );

result = DefWindowProc( hWnd, msg, wParam, lParam );

}

else

{

if ( this )

result = pthis->MyWndProc( hWnd, msg, wParam, lParam );

else

result = DefWindowProc( hWnd, msg, wParam, lParam );

}

return result;

}

class MyClass

{

public:

CreateWindow( ... )

{

wc.lpfnWndProc = WndProc;

RegiserWindow( &wc );

m_hWnd = CreateWindowEx( /* */, this );

}

LRESULT MyWndProc( hWnd, msg, wParam, lParam );

protected:

m_hWnd;

}