globaldllobjects.h

主要介绍vc++6.0的编程过程

// GlobalDllObjects.h : main header file for the GLOBALDLLOBJECTS DLL
//

#if !defined(AFX_GLOBALDLLOBJECTS_H__25729FC2_08C5_11D2_8DB2_204C4F4F5020__INCLUDED_)
#define AFX_GLOBALDLLOBJECTS_H__25729FC2_08C5_11D2_8DB2_204C4F4F5020__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

#ifndef __AFXWIN_H__
	#error include 'stdafx.h' before including this file for PCH
#endif

#include "resource.h"		// main symbols

/////////////////////////////////////////////////////////////////////////////
// CGlobalDllObjectsApp
// See GlobalDllObjects.cpp for the implementation of this class
//

#ifdef GLOBALDLLOBJECTS_EXPORTS
#define GLOBALDLLOBJECTS_API __declspec(dllexport)
#else
#define GLOBALDLLOBJECTS_API __declspec(dllimport)
#endif

class CGlobalDllObjectsApp : public CWinApp
{
public:
	CGlobalDllObjectsApp();

// Overrides
	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CGlobalDllObjectsApp)
	public:
	virtual BOOL InitInstance();
	virtual int ExitInstance();
	//}}AFX_VIRTUAL

	//{{AFX_MSG(CGlobalDllObjectsApp)
		// NOTE - the ClassWizard will add and remove member functions here.
		//    DO NOT EDIT what you see in these blocks of generated code !
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()
};


class GLOBALDLLOBJECTS_API CTest
{
public:
 // the only construction of the object 
 // that is allowed is via the placement 
 // new operator
 void* operator new(size_t) { return NULL; }
 void* operator new(size_t, void* p) { return p; }
 void operator delete(void*) {};

 // display message box during object c'tor and d'tor
 // to show that object is only being constructed 
 // when first client attaches and destructed when
 // last client detaches
 CTest() {
  ::MessageBox(NULL,"CTest c'tor",
  "CTest.DLL", MB_OK); 
 }

 ~CTest() { 
  ::MessageBox(NULL,"CTest d'tor", 
  "CTest.DLL", MB_OK); 
 }
 
 CTest(const CTest&);
};

#define EXPORTED_DLL_FUNCTION \
 __declspec(dllexport) __stdcall

void EXPORTED_DLL_FUNCTION GetTestPtr(CTest*& rpTest);
int EXPORTED_DLL_FUNCTION GetNbrOfClients();

/////////////////////////////////////////////////////////////////////////////

//{{AFX_INSERT_LOCATION}}
// Microsoft Visual C++ will insert additional declarations immediately before the previous line.

#endif // !defined(AFX_GLOBALDLLOBJECTS_H__25729FC2_08C5_11D2_8DB2_204C4F4F5020__INCLUDED_)