怎样才能调用StgCreateDocfile成功？

Question

IStorage *pStg=NULL;
HRESULT hr=::StgCreateDocfile(L"D:\\MyStorageFile",
        STGM_READWRITE,
        0,&pStg);
if(FAILED(hr))
{
    cout<<"StgCreateDocfile() failed.\n";
    exit(0);
}
调用总是失败，为什么
谢谢

Answer 1

IStorage *pStg=NULL;
HRESULT hr=::StgCreateDocfile(L"D:\\MyStorageFile",
        STGM_READWRITE|STGM_CREATE|STGM_SHARE_EXCLUSIVE,
        0,&pStg);
if(FAILED(hr))
{
    cout<<"StgCreateDocfile() failed.\n";
    exit(0);
}