本文转自：
http://www.cppblog.com/humanchao/archive/2008/07/02/55154.html
#import "scrrun.dll" raw_interfaces_only
// 参数格式："c:\" 或 "c:\test"
ULONGLONG GetPathUseSpace(const char *szPath)
{
ASSERT(szPath != NULL);
int nLen = strlen(szPath);
if (nLen == 0)
return 0;
ULONGLONG result = 0;
if (nLen == 3) // c:\
{
ULARGE_INTEGER nFreeBytesAvailable;
ULARGE_INTEGER nTotalNumberOfBytes;
ULARGE_INTEGER nTotalNumberOfFreeBytes;
//
if (GetDiskFreeSpaceEx(szPath,
&nFreeBytesAvailable,
&nTotalNumberOfBytes,
&nTotalNumberOfFreeBytes))
{
result = nTotalNumberOfBytes.QuadPart - nFreeBytesAvailable.QuadPart;
}
}
else
{
CoInitialize(NULL);
{
try
{
Scripting::IFileSystem3Ptr fs;
fs.CreateInstance(__uuidof(Scripting::FileSystemObject));
Scripting::IFolderPtr folder;
fs->GetFolder(_bstr_t(szPath),&folder);
_variant_t vsize;
folder->get_Size(&vsize);
result = (double)vsize;
}
catch(_com_error &e)
{
result = -1;
}
}
CoUninitialize();
}
return result;
}
Scrrun.dll枚举文件
CoInitialize(NULL);
{
try
{
Scripting::IFileCollectionPtr files;
folder-> get_Files(&files);
long count = 0;
files-> get_Count(&count);
cout < < "files count: " < <count < <endl;
IUnknown *pUnk=NULL;
HRESULT hr = files-> get__NewEnum(&pUnk);
if(SUCCEEDED(hr))
{
CComPtr <IEnumVARIANT> pEnum;
hr = pUnk-> QueryInterface(IID_IEnumVARIANT,(void**)&pEnum);
if(pEnum)
{
pEnum-> Reset();
ULONG fget = 1;
while(SUCCEEDED(hr)&&fget> 0)
{
Scripting::IFilePtr file;
_variant_t varfile;
hr = pEnum-> Next(1,&varfile,&fget);
if(SUCCEEDED(hr) && fget> 0)
{
file = varfile.pdispVal;
BSTR bspath;
file-> get_Path(&bspath);
cout < < "file path: " < <(LPCTSTR)_bstr_t(bspath) < <endl;
}
else
{
cout < < " get file return " < <hr < <endl;
}
}
}
}
}
catch(_com_error &e)
{
_bstr_t bstrSource(e.Source());
_bstr_t bstrDescription(e.Description());
cout < < "Get directory size via FileSystemObject, by masterz " < <endl;
cout < < "COM error occurred,source: " < <(LPCTSTR)bstrSource < <endl;
cout < < "Description: " < <(LPCTSTR)bstrDescription < <endl;
}
}
CoUninitialize();
posted on 2012-04-13 09:33
王海光 阅读(779)
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