ciderpress/util/ImageDataObject.h

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// ImageDataObject.h: Impementation for IDataObject Interface to be used
// in inserting bitmap to the RichEdit Control.
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//
// Author : Hani Atassi (atassi@arabteam2000.com)
//
// How to use : Just call the static member InsertBitmap with
// the appropriate parrameters.
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//
// Known bugs :
//
//
//////////////////////////////////////////////////////////////////////
#if !defined(AFX_IMAGEDATAOBJECT_H__7E162227_62B8_49E3_A35B_FEC3F241A78F__INCLUDED_)
#define AFX_IMAGEDATAOBJECT_H__7E162227_62B8_49E3_A35B_FEC3F241A78F__INCLUDED_
#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000
#include <afxole.h>
#include <richole.h>
class CImageDataObject : IDataObject
{
public:
// This static fumction accepts those parameters:
// IRichEditOle* : a pointer to IRochEditOle interface for the RichEdit Control
// HBITMAP : the bitmap handle.
//
// After calling the function, it inserts the image in the current
// position of the RichEdit
//
static void InsertBitmap(IRichEditOle* pRichEditOle, HBITMAP hBitmap);
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private:
ULONG m_ulRefCnt;
BOOL m_bRelease;
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// The data being bassed to the richedit
//
STGMEDIUM m_stgmed;
FORMATETC m_fromat;
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public:
CImageDataObject() : m_ulRefCnt(0)
{
m_bRelease = FALSE;
}
~CImageDataObject()
{
if (m_bRelease)
::ReleaseStgMedium(&m_stgmed);
}
// Methods of the IUnknown interface
//
STDMETHOD(QueryInterface)(REFIID iid, void ** ppvObject)
{
if (iid == IID_IUnknown || iid == IID_IDataObject)
{
*ppvObject = this;
AddRef();
return S_OK;
}
else
return E_NOINTERFACE;
}
STDMETHOD_(ULONG, AddRef)(void)
{
m_ulRefCnt++;
return m_ulRefCnt;
}
STDMETHOD_(ULONG, Release)(void)
{
if (--m_ulRefCnt == 0)
{
delete this;
return 0;
}
return m_ulRefCnt;
}
// Methods of the IDataObject Interface
//
STDMETHOD(GetData)(FORMATETC* /*pformatetcIn*/, STGMEDIUM* pmedium) {
HANDLE hDst;
hDst = ::OleDuplicateData(m_stgmed.hBitmap, CF_BITMAP, NULL);
if (hDst == NULL)
{
return E_HANDLE;
}
pmedium->tymed = TYMED_GDI;
pmedium->hBitmap = (HBITMAP)hDst;
pmedium->pUnkForRelease = NULL;
return S_OK;
}
STDMETHOD(GetDataHere)(FORMATETC* /*pformatetc*/, STGMEDIUM* pmedium ) {
return E_NOTIMPL;
}
STDMETHOD(QueryGetData)(FORMATETC* /*pformatetc*/ ) {
return E_NOTIMPL;
}
STDMETHOD(GetCanonicalFormatEtc)(FORMATETC* /*pformatectIn*/, FORMATETC* /*pformatetcOut*/) {
return E_NOTIMPL;
}
STDMETHOD(SetData)(FORMATETC* pformatetc , STGMEDIUM* pmedium , BOOL fRelease ) {
m_fromat = *pformatetc;
m_stgmed = *pmedium;
return S_OK;
}
STDMETHOD(EnumFormatEtc)(DWORD dwDirection , IEnumFORMATETC** ppenumFormatEtc ) {
return E_NOTIMPL;
}
STDMETHOD(DAdvise)(FORMATETC* /*pformatetc*/, DWORD /*advf*/, IAdviseSink* /*pAdvSink*/,
DWORD* /*pdwConnection*/) {
return E_NOTIMPL;
}
STDMETHOD(DUnadvise)(DWORD /*dwConnection*/) {
return E_NOTIMPL;
}
STDMETHOD(EnumDAdvise)(IEnumSTATDATA** /*ppenumAdvise*/) {
return E_NOTIMPL;
}
// Some Other helper functions
//
void SetBitmap(HBITMAP hBitmap);
IOleObject *GetOleObject(IOleClientSite *pOleClientSite, IStorage *pStorage);
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};
#endif // !defined(AFX_IMAGEDATAOBJECT_H__7E162227_62B8_49E3_A35B_FEC3F241A78F__INCLUDED_)