THISDLL.H

//******************************************************************************************* 
// 
// Filename : ThisDll.h 
// 
//Generic OLE header file  
// 
// Copyright 1994 - 1998 Microsoft Corporation. All rights reserved 
// 
//******************************************************************************************* 
 
 
 
#ifndef _THISDLL_H_ 
#define _THISDLL_H_ 
 
 
 
class CWaitCursor 
{ 
public: 
CWaitCursor() {m_cOld=SetCursor(LoadCursor(NULL, IDC_WAIT));} 
~CWaitCursor() {SetCursor(m_cOld);} 
 
private: 
HCURSOR m_cOld; 
} ; 
 
class CRefCount 
{ 
public: 
CRefCount() : m_cRef(0) {}; 
 
UINT AddRef()  {return(++m_cRef);} 
UINT Release() {return(--m_cRef);} 
UINT GetRef()  {return(  m_cRef);} 
 
private: 
UINT m_cRef; 
 
} ; 
 
class CThisDll 
{ 
public: 
CThisDll() { 
        m_hInst=NULL; 
} 
    // Make no destructor for global classes (requires CRT stuff) 
 
void SetInstance(HINSTANCE hInst) {m_hInst=hInst;} 
HINSTANCE GetInstance() {return(m_hInst);} 
 
CRefCount m_cRef; 
CRefCount m_cLock; 
 
private: 
HINSTANCEm_hInst; 
} ; 
 
extern CThisDll g_ThisDll; 
 
class CRefDll 
{ 
public: 
CRefDll()  {g_ThisDll.m_cRef.AddRef ();} 
~CRefDll() {g_ThisDll.m_cRef.Release();} 
} ; 
 
extern HRESULT CreateInstance(REFIID riid, LPVOID *ppvObj); 
 
class CSafeMalloc 
{ 
public: 
    CSafeMalloc() 
    { 
        if (!SUCCEEDED(SHGetMalloc(&m_ShIMalloc))) 
        { 
            m_ShIMalloc = NULL; 
        } 
    } 
    ~CSafeMalloc() {if (m_ShIMalloc) m_ShIMalloc->Release();} 
 
    LPVOID Alloc(UINT cb) {return(m_ShIMalloc ? m_ShIMalloc->Alloc(cb) : NULL);} 
    void Free(LPVOID pv) {if (m_ShIMalloc) m_ShIMalloc->Free(pv);} 
 
private: 
    IMalloc* m_ShIMalloc; 
} ; 
 
#endif// _THISDLL_H_