错误C2143:语法错误:缺少';' 在'__stdcall'之前

Question

我在创建COM DLL时遇到了一些麻烦.我的IClassFactory实现如下所示:

include <windows.h>
#include <ObjBase.h>
#include "AddObj.h"
#include "AddObjFactory.h"

HRESULT __stdcall CAddFactory::CreateInstance(IUnknown* pUnknownOuter, 
                                              const IID& iid, void** ppv)
{
  if (pUnknownOuter) { return CLASS_E_NOAGGREGATION; }

  CAddObj* pObject = new CAddObj();
  if (pObject == NULL)
  {
      return E_OUTOFMEMORY;
  }

  return pObject->QueryInterface(iid, ppv);
}

HRESULT __stdcall CAddFactory::LockServer(BOOL bLock)
{
  return E_NOTIMPL;
}

我的问题是Visual Studio总是说"错误C2143:语法错误:缺少';' 在第6行的"__stdcall"之前(以及更多行).我已经google了,我发现我要包含windows.h.但这并不能解决我的问题...任何人都知道我的代码有什么问题或者我要包含什么来解决问题？我通过编译头文件得到了同样的错误:

#include <Windows.h>
#include <ObjBase.h>

class CAddFactory : public IClassFactory
{
public:
  HRESULT __stdcall QueryInterface(REFIID riid, void **ppObj);
  ULONG __stdcall AddRef();
  ULONG __stdcall Release();

  HRESULT __stdcall CreateInstance(IUnknown* pUnknownOuter, 
                                   const IID& iid, void** ppv);
  HRESULT __stdcall LockServer(BOOL bLock);

private:
    long m_nRefCount;
}

顺便说一句,代码基于codeguru的教程.

Answer 1

你必须把;每个类和结构放在后面,因为它们是对象int a;,而不是函数.;标题中缺少.

#include <Windows.h>
#include <ObjBase.h>

class CAddFactory : public IClassFactory {
    public:
        HRESULT __stdcall QueryInterface(REFIID riid, void **ppObj);
        ULONG __stdcall AddRef();
        ULONG __stdcall Release();

HRESULT __stdcall CreateInstance(IUnknown* pUnknownOuter, const IID& iid, void** ppv);
HRESULT __stdcall LockServer(BOOL bLock);

private:
    long m_nRefCount;

}; //<- Master forgot Dobby.