继承IDropSource和IDataObject的文件拖拽，为何无法成功将文件发送到指定窗口？？

bool CImageItem::DragDropTo2(QString path, int DropStyle)

{

    OleInitialize(NULL);    // needed for Drag and Drop

      

    CIDropSource* src = new CIDropSource;

    if (src == nullptr) return false;

     

    CIDataObject* obje = new CIDataObject(src);

    if (obje == nullptr)

    {

        OleUninitialize();

        delete src;

        return false;

    }

     

    FORMATETC fmtetc = { CF_TEXT, 0, DVASPECT_CONTENT, -1, TYMED_HGLOBAL };

    STGMEDIUM stgmed = { TYMED_HGLOBAL, { 0 }, 0 };

    STGMEDIUM dest = { TYMED_HGLOBAL, { 0 }, 0 };



    stgmed.hGlobal = GlobalAlloc(GMEM_MOVEABLE, strlen(path.toLatin1().data()) + 1);

    char *pChar = (char *)GlobalLock(stgmed.hGlobal);

    strcpy(pChar, path.toLatin1().data());

    GlobalUnlock(stgmed.hGlobal);

      

    obje->CopyMedium(&dest, &stgmed, &fmtetc);

         

    DWORD        dwEffect;

    DWORD        dwResult;  

    dwResult = DoDragDrop(obje, src, DROPEFFECT_COPY | DROPEFFECT_MOVE, &dwEffect); 

    if (dwResult == DRAGDROP_S_DROP)

    {

      //通过调试输出，这里是成功的。

        OutputDebugString(L"[3dh] ok");

        if (dwEffect & DROPEFFECT_MOVE)

        {

             //这里并没有过来。。。。

            OutputDebugString(L"[3dh] ok2");

        }

    } 

    else if (dwResult == DRAGDROP_S_CANCEL)

    {

        OutputDebugString(L"[3dh] no");

    } 



      //正常来说这里应该有上面两个指针的Release()。但是如果Release会崩掉。。。这是问题2.。。。

      if (obje != null)

         obje->Release()　／／崩溃。



      if (src  != null)

          src->.RElease(); 

    

      

    OleUninitialize(); 

    return true;

}