CDataObject Class

class CDataObject: public IDataObject

Member functions include: CDataObject, AddRef, Release, QueryInterface, CacheGlobalData, DoDragDrop, SetClipboard, CacheData, GetDataHere, GetData, GetDataHere, QueryGetData, GetCanonicalFormatEtc, SetData, EnumFormatEtc, DAdvise, DUnadvise, and EnumDAdvise

Defined in: DataSource.h

Class Members

CDataObject()

Constructor initializes the data object

STDMETHODIMP_(ULONG) AddRef()

AddRef puts a reference count on the object

STDMETHODIMP_(ULONG) Release()

Release Removesa reference count from the object

STDMETHODIMP QueryInterface(REFIID riid, void** ppv)

Get a new interface

void CacheGlobalData(CLIPFORMAT cfFormat, HGLOBAL hGlobal, LPFORMATETC lpFormatEtc = NULL)

Cache a global handle in the data object

DWORD DoDragDrop( DWORD dwEffects = DROPEFFECT_COPY|DROPEFFECT_MOVE|DROPEFFECT_LINK, LPCRECT lpRectStartDrag = NULL, IDropSource* pDropSource = NULL)

Start a new drag drop operation

void SetClipboard()

Put the data on the clipboard

void CacheData(CLIPFORMAT cfFormat, LPSTGMEDIUM lpStgMedium, LPFORMATETC lpFormatEtc = NULL)

Cache the data using the STGMEDIUM and FORMATETC structures yourself-- if you have the wherewithall.

STDMETHODIMP GetData(LPFORMATETC lpFormatEtc, LPSTGMEDIUM lpStgMedium)

IDataObject method for retrieving data

STDMETHODIMP GetDataHere(LPFORMATETC lpFormatEtc, LPSTGMEDIUM lpStgMedium)

IDataObject method for retrieving data. Client supplies storage medium

STDMETHODIMP QueryGetData(LPFORMATETC lpFormatEtc)

IDataObject method for determining availability of data format

STDMETHODIMP EnumFormatEtc(DWORD dwDirection, LPENUMFORMATETC* ppenumFormatEtc)

IDataObject method for retrieving an enumerator for FORMATETCs

STDMETHODIMP DAdvise(LPFORMATETC, DWORD, LPADVISESINK, LPDWORD pdwConnection)

IDataObject method not supported

STDMETHODIMP DUnadvise(DWORD)

IDataObject method not supported

STDMETHODIMP EnumDAdvise(LPENUMSTATDATA* ppenumAdvise)

IDataObject method not supported