CRichEditView::QueryAcceptData

Статья
10/16/2008

Called by the framework to paste an object into the rich edit.

virtual HRESULT QueryAcceptData(
   LPDATAOBJECT lpdataobj,
   CLIPFORMAT* lpcfFormat,
   DWORD dwReco,
   BOOL bReally,
   HGLOBAL hMetaFile 
);

Параметры

lpdataobj
Pointer to the IDataObject to query.
lpcfFormat
Pointer to the acceptable data format.
dwReco
Not used.
bReally
Indicates if the paste operation should continue or not.
hMetaFile
A handle to the metafile used for drawing the item's icon.

Возвращаемое значение

An HRESULT value reporting the success of the operation.

Заметки

Override this function to handle different organization of COM items in your derived document class. This is an advanced overridable.

For more information on HRESULT and IDataObject, see Structure of COM Error Codes and IDataObject, respectively, in the Windows SDK.

Пример

// This code fragment is taken from the Wordpad sample.
HRESULT CMyRichEditView::QueryAcceptData(LPDATAOBJECT lpdataobj, 
   CLIPFORMAT* lpcfFormat, DWORD dwReco, BOOL bReally, HGLOBAL hMetaFile)
{
   if (bReally && *lpcfFormat == 0 && (m_nPasteType == 0))
   {
      COleDataObject dataobj;
      dataobj.Attach(lpdataobj, FALSE);
      if (!dataobj.IsDataAvailable(cfRTO)) // native avail, let 
                                           // richedit do as it wants
      {
         if (dataobj.IsDataAvailable(cfEmbeddedObject))
         {
            if (PasteNative(lpdataobj)) // See WordPad sample for info
                                        // on PasteNative
               return S_FALSE;
         }
      }
   }
   return CRichEditView::QueryAcceptData(lpdataobj, lpcfFormat, dwReco, 
      bReally, hMetaFile);
}