"blackbiscuit" <infozyzhang@gmail.com> wrote in message news:75477e8f-5aca-42d3-bde0-e7e0fe945b07@v13g2000pro.googlegroups.com... Why do you say that you never relase it, as you call "GlobalFree (hData);" ? Because GetGlobalData itself allocate a new memory, hData, and copy all content from the OLE clipboard into it. The GlobalFree( hData ) is just used to release that new

blackbiscuit wrote: UINT nFormat = ((DATA*) AfxGetApp ())->GetClipboardFormat (); // Allocate some memory related to hData and copy data into from OLE clipborad. HGLOBAL hData = pDataObject->GetGlobalData (nFormat); if (hData != NULL) { DATA* pData= (DATA*) ::GlobalLock (hData); ...; ::GlobalUnlock (hData); ::GlobalFree