vc++如何获取已经打开的EXCEL文件对象？

[inchorn]

请教VC++里，我用下面的代码，首先判断EXCEL文件是否打开 如果打开了 就获取这个对象给book，关闭它,如果没有打开就open函数打开。
HANDLE hFile = CreateFile(pathname,FILE_ALL_ACCESS,FILE_SHARE_READ,NULL,OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,NULL);
if (hFile == INVALID_HANDLE_VALUE)
{
HRESULT hr = GetLastError();
if ( ERROR_ACCESS_DENIED == hr || ERROR_SHARING_VIOLATION == hr)
{
// 文件被占用

}
}
else
{
// 文件未被打开
CloseHandle(hFile);
}

我不知道如何获取这个已经打开的对象，就是把已经打开的EXCEL文件对象赋值给book对象，也就没法操作它，没法关闭它。文件被占用后，获取并关闭它，代码怎么写

[inchorn]

请高手解答一下

[oyljerry]

hFile 就是对应的文件句柄。

[6057]

CLSID clsid; HRESULT hr; // Option 1. Get CLSID from ProgID using CLSIDFromProgID. LPCOLESTR progID = L"Excel.Application"; hr = CLSIDFromProgID(progID, &clsid); if (FAILED(hr)) { MessageBox(_T("启动服务失败"),NULL,NULL); return 1; } // Option 2. Build the CLSID directly. // Start the server and get the IDispatch interface IDispatch *pExcelApp = NULL; hr = CoCreateInstance( // [-or-] CoCreateInstanceEx, CoGetObject clsid, // CLSID of the server NULL, CLSCTX_LOCAL_SERVER, // Word.Application is a local server IID_IDispatch, // Query the IDispatch interface (void **)&pExcelApp ); // Output if (FAILED(hr)) { return 1; } //Make Excel invisible. (i.e. Application.Visible = 0) { VARIANT x; x.vt = VT_I4; x.lVal = 1; AutoWrap(DISPATCH_PROPERTYPUT, NULL, pExcelApp, L"Visible", 1, x); } // open IDispatch *pBooks = NULL; { VARIANT result; VariantInit(&result); AutoWrap(DISPATCH_PROPERTYGET, &result, pExcelApp, L"Workbooks", 0); pBooks = result.pdispVal; } // Call Workbooks.Open() to get a book IDispatch *pbook = NULL; { m_strFileName=_T("excel文件路径"); VARIANT result; VARIANT vtFileName; vtFileName.vt = VT_BSTR; vtFileName.bstrVal = SysAllocString(m_strFileName); VariantInit(&result); AutoWrap(DISPATCH_METHOD, &result, Workbooks, L"Open",1,vtFileName); pbook = result.pdispVal; }

[inchorn]

这么复杂啊 看不懂啊