怎么样用vc获取word文档的作者信息，高分求教！！！！！！！！！！！！！！！！！！！

[linweiming]

怎么样用vc来获取诸如word、excel等文件的作者信息？
另外pdf格式的可以获取吗，请知道的各位re一下，谢谢拉！！！！！！！！！！！！！

[vcmute]

Word要先导入MSWORD.OLB，示例代码如下
m_oDoc = m_oDocs.Open(COleVariant(sFile), vOpt,
COleVariant((short)true), vOpt, vOpt, vOpt,
vOpt, vOpt, vOpt, vOpt, vOpt, vOpt, vOpt, vOpt, vOpt, vOpt);
//如果是Word 2000，为12个参数，Word 2003 为16个参数，之前是10个参数
LPDISPATCH lpdispProps;
lpdispProps = m_oDoc.GetBuiltInDocumentProperties();
CString sProperty="Author";

VARIANT vResult;
DISPPARAMS dpItem;
VARIANT vArgs[1];
vArgs[0].vt = VT_BSTR;
vArgs[0].bstrVal = sProperty.AllocSysString();
dpItem.cArgs=1;
dpItem.cNamedArgs=0;
dpItem.rgvarg = vArgs;
HRESULT hr = lpdispProps->Invoke(0x0, IID_NULL,
LOCALE_USER_DEFAULT, DISPATCH_PROPERTYGET,
&dpItem, &vResult, NULL, NULL);
::SysFreeString(vArgs[0].bstrVal);

DISPPARAMS dpNoArgs = {NULL, NULL, 0, 0};
LPDISPATCH lpdispProp;
lpdispProp = vResult.pdispVal;
hr = lpdispProp->Invoke(0x0, IID_NULL, LOCALE_USER_DEFAULT,
DISPATCH_PROPERTYGET, &dpNoArgs, &vResult,
NULL, NULL);

sProperty = "Error";
if(vResult.vt==VT_BSTR)
sProperty = vResult.bstrVal;

lpdispProp->Release();
lpdispProps->Release();

MessageBox(sProperty);
P.S.m_oDoc和m_oDocs的声明
Documents m_oDocs;
_Document m_oDoc;

[vcmute]

忘了将初始化信息，否则会非法
AfxOleInit();
COleVariant vOpt(DISP_E_PARAMNOTFOUND, VT_ERROR);
if(!m_oApp.CreateDispatch("Word.Application", NULL))
{
AfxMessageBox("Unable to start Word");
return false;
}
//Create a new document in Word
m_oDocs = m_oApp.GetDocuments();

[蒋晟]

http://support.microsoft.com/kb/q186898/

[vcmute]

楼上和很早的EnumAll（MSDN中的Sample）差不多，只是多了
// Array of PIDSI's you are interested in.
struct pidsiStruct {
char *name;
long pidsi;
} pidsiArr[] = {
{"Title", PIDSI_TITLE}, // VT_LPSTR
{"Subject", PIDSI_SUBJECT}, // ...
{"Author", PIDSI_AUTHOR},
{"Keywords", PIDSI_KEYWORDS},
{"Comments", PIDSI_COMMENTS},
{"Template", PIDSI_TEMPLATE},
{"LastAuthor", PIDSI_LASTAUTHOR},
{"Revision Number", PIDSI_REVNUMBER},
{"Edit Time", PIDSI_EDITTIME}, // VT_FILENAME (UTC)
{"Last printed", PIDSI_LASTPRINTED}, // ...
{"Created", PIDSI_CREATE_DTM},
{"Last Saved", PIDSI_LASTSAVE_DTM},
{"Page Count", PIDSI_PAGECOUNT}, // VT_I4
{"Word Count", PIDSI_WORDCOUNT}, // ...
{"Char Count", PIDSI_CHARCOUNT},

{"Thumpnail", PIDSI_THUMBNAIL}, // VT_CF
{"AppName", PIDSI_APPNAME}, // VT_LPSTR
{"Doc Security", PIDSI_DOC_SECURITY}, // VT_I4
{0, 0}
};

[NOMADBLUE]

AfxOleInit(0);
使用COM