运行msdn上的例子碰到错误,no GUID has been associated with this object, 不知道什么原因,请教~

[rambooo]

运行msdn上的例子碰到错误,
Error 1 error C2787: 'DOMDocument60' : no GUID has been associated with this object f:\learning\c_c++_c#\experiment_main\msxml\msxml\msxml.cpp 43

不知道什么原因,请教~

// LoadDomRaw.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"

#include <objbase.h>
#include <msxml6.h>

// Macro that calls a COM method returning HRESULT value:
#define HRCALL(a, errmsg) \
do { \
    hr = (a); \
    if (FAILED(hr)) { \
        dprintf( "%s:%d  HRCALL Failed: %s\n  0x%.8x = %s\n", \
                __FILE__, __LINE__, errmsg, hr, #a ); \
        goto clean; \
    } \
} while (0)

// Helper function that put output in stdout and debug window
// in Visual Studio:
void dprintf( char * format, ...)
{
    static char buf[1024];
    va_list args;
    va_start( args, format );
    vsprintf_s( buf, format, args );
    va_end( args);
    OutputDebugStringA( buf);
    printf("%s", buf);
}

// Helper function to create a DOM instance:
IXMLDOMDocument * DomFromCOM()
{
   HRESULT hr;
   IXMLDOMDocument *pxmldoc = NULL;

    HRCALL( CoCreateInstance(__uuidof(DOMDocument60),
                  NULL,
                  CLSCTX_INPROC_SERVER,
                  __uuidof(IXMLDOMDocument),
                  (void**)&pxmldoc),
                  "Create a new DOMDocument");

    HRCALL( pxmldoc->put_async(VARIANT_FALSE),
            "should never fail");
    HRCALL( pxmldoc->put_validateOnParse(VARIANT_FALSE),
            "should never fail");
    HRCALL( pxmldoc->put_resolveExternals(VARIANT_FALSE),
            "should never fail");

   return pxmldoc;
clean:
   if (pxmldoc)
    {
         pxmldoc->Release();
    }
    return NULL;
}


int _tmain(int argc, _TCHAR* argv[])
{
   IXMLDOMDocument *pXMLDom=NULL;
   IXMLDOMParseError *pXMLErr=NULL;
   BSTR bstr = NULL;
   VARIANT_BOOL status;
   VARIANT var;
   HRESULT hr;

   CoInitialize(NULL);

   pXMLDom = DomFromCOM();
   if (!pXMLDom) goto clean;

   VariantInit(&var);
   V_BSTR(&var) = SysAllocString(L"stocks.xml");
   V_VT(&var) = VT_BSTR;
   HRCALL(pXMLDom->load(var, &status), "");

   if (status!=VARIANT_TRUE) {
      HRCALL(pXMLDom->get_parseError(&pXMLErr),"");
      HRCALL(pXMLErr->get_reason(&bstr),"");
      dprintf("Failed to load DOM from stocks.xml. %S\n",
               bstr);
      goto clean;
   }
   HRCALL(pXMLDom->get_xml(&bstr), "");
   dprintf("XML DOM loaded from stocks.xml:\n%S\n",bstr);

clean:
   if (bstr) SysFreeString(bstr);
   if (&var) VariantClear(&var);
   if (pXMLErr) pXMLErr->Release();
   if (pXMLDom) pXMLDom->Release();

   CoUninitialize();
   return 0;
}

[leo201592]

DOMDocument60哪里定义的啊? 或则你的组件没有注册。

[iu_81]

由于<shlobj.h>文件同vc6.0下不同

[jy01807853]

//楼主只要你不在VC6上编译就没问题

// LoadDomRaw.cpp : Defines the entry point for the console application.
//

#include <objbase.h>
#include <msxml6.h>
#include <stdio.h>
#include <tchar.h>



// Macro that calls a COM method returning HRESULT value:
#define HRCALL(a, errmsg) \
do { \
    hr = (a); \
    if (FAILED(hr)) { \
        dprintf( "%s:%d  HRCALL Failed: %s\n  0x%.8x = %s\n", \
                __FILE__, __LINE__, errmsg, hr, #a ); \
        goto clean; \
    } \
} while (0)

// Helper function that put output in stdout and debug window
// in Visual Studio:
void dprintf( char * format, ...)
{
    static char buf[1024];
    va_list args;
    va_start( args, format );
    vsprintf_s( buf, format, args );
    va_end( args);
    OutputDebugStringA( buf);
    printf("%s", buf);
}

// Helper function to create a DOM instance:
IXMLDOMDocument * DomFromCOM()
{
   HRESULT hr;
   IXMLDOMDocument *pxmldoc = NULL;

    HRCALL( CoCreateInstance(__uuidof(DOMDocument60),
                  NULL,
                  CLSCTX_INPROC_SERVER,
                  __uuidof(IXMLDOMDocument),
                  (void**)&pxmldoc),
                  "Create a new DOMDocument");

    HRCALL( pxmldoc->put_async(VARIANT_FALSE),
            "should never fail");
    HRCALL( pxmldoc->put_validateOnParse(VARIANT_FALSE),
            "should never fail");
    HRCALL( pxmldoc->put_resolveExternals(VARIANT_FALSE),
            "should never fail");

   return pxmldoc;
clean:
   if (pxmldoc)
    {
         pxmldoc->Release();
    }
    return NULL;
}


int _tmain(int argc, _TCHAR* argv[])
{
   IXMLDOMDocument *pXMLDom=NULL;
   IXMLDOMParseError *pXMLErr=NULL;
   BSTR bstr = NULL;
   VARIANT_BOOL status;
   VARIANT var;
   HRESULT hr;

   CoInitialize(NULL);

   pXMLDom = DomFromCOM();
   if (!pXMLDom) goto clean;

   VariantInit(&var);
   V_BSTR(&var) = SysAllocString(L"stocks.xml");
   V_VT(&var) = VT_BSTR;
   HRCALL(pXMLDom->load(var, &status), "");

   if (status!=VARIANT_TRUE) {
      HRCALL(pXMLDom->get_parseError(&pXMLErr),"");
      HRCALL(pXMLErr->get_reason(&bstr),"");
      dprintf("Failed to load DOM from stocks.xml. %S\n",
               bstr);
      goto clean;
   }
   HRCALL(pXMLDom->get_xml(&bstr), "");
   dprintf("XML DOM loaded from stocks.xml:\n%S\n",bstr);

clean:
   if (bstr) SysFreeString(bstr);
   if (&var) VariantClear(&var);
   if (pXMLErr) pXMLErr->Release();
   if (pXMLDom) pXMLDom->Release();

   CoUninitialize();
   return 0;
}

[shaq001]

参考这篇：
http://www.pcreview.co.uk/forums/thread-1429635.php