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