DATAUSER.H

/* 
 * DATAUSER.H 
 * Data Object User Chapter 10 
 * 
 * Copyright (c)1993-1995 Microsoft Corporation, All Rights Reserved 
 * 
 * Kraig Brockschmidt, Microsoft 
 * Internet  :  kraigb@microsoft.com 
 * Compuserve:  >INTERNET:kraigb@microsoft.com 
 */ 
 
 
#ifndef _DATAUSER_H_ 
#define _DATAUSER_H_ 
 
#define INC_OLE2 
#define CHAPTER10 
#include <inole.h> 
 
//Menu Resource ID and Commands 
#define IDR_MENU                    1 
 
 
#define IDM_OBJECTUSEDLL                100 
#define IDM_OBJECTUSEEXE                101 
#define IDM_OBJECTDATASIZESMALL         102 
#define IDM_OBJECTDATASIZEMEDIUM        103 
#define IDM_OBJECTDATASIZELARGE         104 
#define IDM_OBJECTQUERYGETDATA          105 
#define IDM_OBJECTGETDATATEXT           106 
#define IDM_OBJECTGETDATABITMAP         107 
#define IDM_OBJECTGETDATAMETAFILEPICT   108 
#define IDM_OBJECTEXIT                  109 
 
#define IDM_ADVISEMIN                   200 
#define IDM_ADVISETEXT                  (IDM_ADVISEMIN+CF_TEXT) 
#define IDM_ADVISEBITMAP                (IDM_ADVISEMIN+CF_BITMAP) 
#define IDM_ADVISEMETAFILEPICT          (IDM_ADVISEMIN+CF_METAFILEPICT) 
#define IDM_ADVISEGETDATA               300 
#define IDM_ADVISEREPAINT               301 
 
 
//DATAUSER.CPP 
LRESULT APIENTRY DataUserWndProc(HWND, UINT, WPARAM, LPARAM); 
 
 
class CAdviseSink; 
typedef class CAdviseSink *PCAdviseSink; 
 
 
/* 
 * Application-defined classes and types. 
 */ 
 
class CApp 
    { 
    friend LRESULT APIENTRY DataUserWndProc(HWND, UINT, WPARAM 
        , LPARAM); 
 
    friend class CAdviseSink; 
 
    protected: 
        HINSTANCE       m_hInst;            //WinMain parameters 
        HINSTANCE       m_hInstPrev; 
        UINT            m_nCmdShow; 
 
        HWND            m_hWnd;             //Main window handle 
        BOOL            m_fEXE;             //For tracking menu 
 
        PCAdviseSink    m_pIAdviseSink; 
 
        DWORD           m_dwConn;           //Advise connection 
        UINT            m_cfAdvise;         //Advise format 
        BOOL            m_fGetData;         //GetData on data change? 
        BOOL            m_fRepaint;         //Repaint on data change? 
 
        LPDATAOBJECT    m_pIDataSmall; 
        LPDATAOBJECT    m_pIDataMedium; 
        LPDATAOBJECT    m_pIDataLarge; 
 
        LPDATAOBJECT    m_pIDataObject;     //Current selection 
        UINT            m_cf; 
        STGMEDIUM       m_stm;              //Current rendering 
 
        BOOL            m_fInitialized;     //Did CoInitialize work? 
 
    public: 
        CApp(HINSTANCE, HINSTANCE, UINT); 
        ~CApp(void); 
        BOOL Init(void); 
        BOOL FReloadDataObjects(BOOL); 
        void TryQueryGetData(LPFORMATETC, UINT, BOOL, UINT); 
        void Paint(void); 
    }; 
 
 
typedef CApp *PAPP; 
 
#define CBWNDEXTRA               sizeof(PAPP) 
#define DATAUSERWL_STRUCTURE     0 
 
 
//This lives with the app to get OnDataChange notifications. 
 
class CAdviseSink : public IAdviseSink 
    { 
    protected: 
        ULONG               m_cRef; 
        PAPP                m_pApp; 
 
    public: 
        CAdviseSink(PAPP); 
        ~CAdviseSink(void); 
 
        STDMETHODIMP QueryInterface(REFIID, PPVOID); 
        STDMETHODIMP_(ULONG) AddRef(void); 
        STDMETHODIMP_(ULONG) Release(void); 
 
        //We only implement OnDataChange for now. 
        STDMETHODIMP_(void)  OnDataChange(LPFORMATETC, LPSTGMEDIUM); 
        STDMETHODIMP_(void)  OnViewChange(DWORD, LONG); 
        STDMETHODIMP_(void)  OnRename(LPMONIKER); 
        STDMETHODIMP_(void)  OnSave(void); 
        STDMETHODIMP_(void)  OnClose(void); 
    }; 
 
#endif //_DATAUSER_H_