急：如何用显示链接方式写封装类的dll，以及如何在别的应用程序中调用它。

Question

重点是如何调用：显示链接方式写的dll中的类、类的成员函数请指教！！！
急！！！！！！
刚才这个问题，我已经提过了。虽然没有解决彻底，但是我还是把分都给大家啦。这次我还会这么作，谢谢你的指教！！

Answer 1

我找到个例子
dynclass.h:
#ifndef __DYNCLASS_H
#define __DYNCLASS_H#include <windows.h>#ifdef _DLL // assume this is defined when we build the dll
#define _DYNLINK __declspec( dllexport)
#else
#define _DYNLINK __declspec( dllimport)
#endifclass _DYNLINK CMyClass
{ 
public:
CMyClass ();
virtual ~CMyClass();
void DoSomethingUseful();
};
typedef void ( CMyClass::*PMYCLASSMETHOD)();
#ifndef _DLL
typedef CMyClass* ( *PFNCREATEMYCLASS)();
#else
_DYNLINK CMyClass* CreateMyClass() 
{ 
return ( new CMyClass());
}
#endif#ifndef _DLL
typedef void ( *PFNDELETEMYCLASS)( CMyClass*);
#else
_DYNLINK void DeleteMyClass ( CMyClass* pObj) 
{ 
delete pObj;
}
#endif#ifndef _DLL
typedef PMYCLASSMETHOD ( *PFNGETCLASSMETHOD)();
#else
_DYNLINK PMYCLASSMETHOD GetClassMethod () 
{ 
return &CMyClass::DoSomethingUseful;
}
#endif
#endif // ndef __DYNCLASS_Hdynclass.cpp:
#include <windows.h>
#include "dynclass.h"HINSTANCE g_hinstThisDll;
static BOOL g_bCrippledOS=FALSE;
static OSVERSIONINFO g_osviVerInfo;
extern "C" int APIENTRY DllMain(HINSTANCE hInstance,DWORD dwReason,LPVOID lpReserved)
{
BOOL bRC=TRUE;
    if(DLL_PROCESS_ATTACH==dwReason)
{
g_hinstThisDll=hInstance;
g_osviVerInfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
GetVersionEx(&g_osviVerInfo);
if(VER_PLATFORM_WIN32_WINDOWS==g_osviVerInfo.dwPlatformId)g_bCrippledOS=TRUE;
}
return TRUE;
}
CMyClass::CMyClass ()
{
OutputDebugString("This is CMyClass::CMyClass()\n");
}
CMyClass::~CMyClass()
{
OutputDebugString("This is CMyClass::~CMyClass()\n");
}
void CMyClass::DoSomethingUseful() 
{
OutputDebugString ( "This is CMyClass::DoSomethingUseful()\n");
}调用dll的例子:
#include <windows.h>
#include "dynclass.h"
int main(void)
{
PFNCREATEMYCLASS pfnCreateMyClass=0;
PFNDELETEMYCLASS pfnDeleteMyClass=0;
PFNGETCLASSMETHOD pfnGetClassMethod=0;
PMYCLASSMETHOD pDoSomethingUseful=0;
CMyClass* pMyClass=0;
HANDLE hDll=LoadLibrary("dynclass.dll");
if(INVALID_HANDLE_VALUE==hDll)return -1;
pfnCreateMyClass=(PFNCREATEMYCLASS)GetProcAddress(hDll,"CreateMyClass");
pfnDeleteMyClass=(PFNDELETEMYCLASS)GetProcAddress(hDll,"DeleteMyClass");
pfnGetClassMethod=(PFNGETCLASSMETHOD)GetProcAddress(hDll,"GetClassMethod");
if(pfnDeleteMyClass&&pfnCreateMyClass&&pfnGetClassMethod)
{
pMyClass=(pfnCreateMyClass)();
pDoSomethingUseful=(pfnGetClassMethod());
(pMyClass->*pDoSomethingUseful)();
(pfnDeleteMyClass(pMyClass));
}
FreeLibrary(hDll);
return 0;
}

Answer 2

akiko(弥弥)，谢谢你！分全给你啦！^_^