EDATAOBJ.H

/* 
 * EDATAOBJ.H 
 * Data Object EXE Chapter 10 
 * 
 * Definitions, classes, and prototypes for an application that 
 * provides DataObject objects to any other object user. 
 * 
 * Copyright (c)1993-1995 Microsoft Corporation, All Rights Reserved 
 * 
 * Kraig Brockschmidt, Microsoft 
 * Internet  :  kraigb@microsoft.com 
 * Compuserve:  >INTERNET:kraigb@microsoft.com 
 */ 
 
 
#ifndef _EDATAOBJ_H_ 
#define _EDATAOBJ_H_ 
 
#include "dataobj.h" 
 
 
//EDATAOBJ.CPP 
LRESULT APIENTRY DataObjectWndProc(HWND, UINT, WPARAM, LPARAM); 
 
 
class CApp 
    { 
    friend LRESULT APIENTRY DataObjectWndProc(HWND, UINT 
        , WPARAM, LPARAM); 
 
    protected: 
        HINSTANCE       m_hInst;            //WinMain parameters 
        HINSTANCE       m_hInstPrev; 
        LPSTR           m_pszCmdLine; 
 
        HWND            m_hWnd;             //Main window handle 
        BOOL            m_fInitialized;     //Did CoInitialize work? 
 
        //We have multiple classes, one for each data size. 
        DWORD           m_rgdwRegCO[DOSIZE_CSIZES]; 
        LPCLASSFACTORY  m_rgpIClassFactory[DOSIZE_CSIZES]; 
 
    public: 
        CApp(HINSTANCE, HINSTANCE, LPSTR, UINT); 
        ~CApp(void); 
        BOOL Init(void); 
    }; 
 
 
typedef CApp *PAPP; 
 
 
void ObjectDestroyed(void); 
 
 
//This class factory object creates Data Objects. 
 
class CDataObjectClassFactory : public IClassFactory 
    { 
    protected: 
        ULONG           m_cRef; 
        UINT            m_iSize;        //Data size for this class 
 
    public: 
        CDataObjectClassFactory(UINT); 
        ~CDataObjectClassFactory(void); 
 
        //IUnknown members 
        STDMETHODIMP         QueryInterface(REFIID, PPVOID); 
        STDMETHODIMP_(ULONG) AddRef(void); 
        STDMETHODIMP_(ULONG) Release(void); 
 
        //IClassFactory members 
        STDMETHODIMP         CreateInstance(LPUNKNOWN, REFIID 
                                 , PPVOID); 
        STDMETHODIMP         LockServer(BOOL); 
    }; 
 
typedef CDataObjectClassFactory *PCDataObjectClassFactory; 
 
#endif //_EDATAOBJ_H_