如何获取拖拽文件的路径？？

[hnsuper2000]

小弟Hook了ITargetDrop的drop函数已成功，得到了IDataObject数据指针，在获取对应文件路径信息时，出现问题，跟踪发现 pIDataObject->GetData(&iFormat, &iMedium)没有返回，请大虾帮忙看下问题在哪？
部分代码


FORMATETC iFormat;
ZeroMemory(&iFormat, sizeof(FORMATETC));

STGMEDIUM iMedium;
ZeroMemory(&iMedium, sizeof(STGMEDIUM));

// data
iFormat.cfFormat = CF_HDROP; //类型
iFormat.dwAspect = DVASPECT_CONTENT;
iFormat.lindex = -1;
iFormat.tymed = TYMED_HGLOBAL; //内存对象

HRESULT hRes = pIDataObject->GetData(&iFormat, &iMedium);
if(FAILED(hRes))
{
Log("错误格式");
return hRes;
}

// we have the data, get it
HDROP hDrop = (HDROP)::GlobalLock(iMedium.hGlobal);
DWORD iLen = ::GlobalSize(iMedium.hGlobal);

TCHAR filenames[200];
int count = ::DragQueryFile(hDrop,0xFFFFFFFF,filenames, sizeof(filenames));

for(int i = 0; i < count; i++)
{
DragQueryFile(hDrop, i, filenames, sizeof(filenames));
Log(filenames);
}

[wshcdr]

HGLOBAL hg;
HDROP   hdrop;
    hg = pDataObject->GetGlobalData ( CF_HDROP );
    
    if ( NULL == hg )
        return FALSE;

    hdrop = (HDROP) GlobalLock ( hg );

    if ( NULL == hdrop )
        {
        GlobalUnlock ( hg );
        return FALSE;
        }

    GlobalUnlock ( hg );

   

[hnsuper2000]

hg = pDataObject->GetGlobalData ( CF_HDROP );

GetGlobalData不是标准函数吧，有这个函数的实现么？先谢谢

[m_tornado]

Call this function to allocate a global memory block and to retrieve data in the specified format into an HGLOBAL.


HGLOBAL GetGlobalData(
CLIPFORMAT cfFormat,
LPFORMATETC lpFormatEtc = NULL
);

msdn里写的，你查查~

[hnsuper2000]

COleDataObject::GetGlobalData有这个函数，但他不是IDataObject的函数

[dingshaofengbinbin]

void CInetChatDlg::OnDropFiles(HDROP hDropInfo)
{
char fp[257]={0};
int kk=DragQueryFile(hDropInfo,DROPFILE,fp,257);//获得拖动的文件总数kk
while(kk)
{
kk--;
DragQueryFile(hDropInfo,kk,fp,257);//获得第kk个文件的路径名
chatdlg.DropFile(fp);
for(UINT i=0;i<strlen(fp);i++)
{
fp[i]=0;
}
}
}