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/*
Basic History plugin
Copyright (C) 2011-2012 Krzysztof Kral
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation version 2
of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
//code taken partly from public example on the internet, source unknown.
#pragma once
class ImageDataObject : IDataObject
{
public:
// returns true on success, false on failure
static bool InsertBitmap(IRichEditOle* pRichEditOle, HBITMAP hBitmap);
// returns true on success, false on failure
static bool InsertIcon(IRichEditOle* pRichEditOle, HICON hIcon,
COLORREF backgroundColor, int sizeX = 0, int sizeY = 0);
private:
ULONG m_ulRefCnt;
BOOL m_bRelease;
STGMEDIUM m_stgmed;
FORMATETC m_format;
// ULONG m_nIndex; // current enumerator index
public:
ImageDataObject() : m_ulRefCnt(0)
{
m_bRelease = FALSE;
}
~ImageDataObject()
{
if (m_bRelease)
::ReleaseStgMedium(&m_stgmed);
}
// 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)
{
m_ulRefCnt--;
if (m_ulRefCnt == 0)
delete this;
return m_ulRefCnt;
}
// IDataObject Interface
STDMETHOD(GetData)(FORMATETC*, STGMEDIUM *pmedium) {
HANDLE hDst;
hDst = ::OleDuplicateData(m_stgmed.hBitmap, CF_BITMAP, 0);
if (hDst == nullptr)
return E_HANDLE;
pmedium->tymed = TYMED_GDI;
pmedium->hBitmap = (HBITMAP)hDst;
pmedium->pUnkForRelease = nullptr;
return S_OK;
}
STDMETHOD(GetDataHere)(FORMATETC*, STGMEDIUM*) {
return E_NOTIMPL;
}
STDMETHOD(QueryGetData)(FORMATETC*) {
return E_NOTIMPL;
}
STDMETHOD(GetCanonicalFormatEtc)(FORMATETC*, FORMATETC*) {
return E_NOTIMPL;
}
STDMETHOD(SetData)(FORMATETC* pformatetc , STGMEDIUM* pmedium , BOOL) {
m_format = *pformatetc;
m_stgmed = *pmedium;
return S_OK;
}
STDMETHOD(EnumFormatEtc)(DWORD, IEnumFORMATETC**) {
return E_NOTIMPL;
}
STDMETHOD(DAdvise)(FORMATETC*, DWORD, IAdviseSink*, DWORD*) {
return E_NOTIMPL;
}
STDMETHOD(DUnadvise)(DWORD) {
return E_NOTIMPL;
}
STDMETHOD(EnumDAdvise)(IEnumSTATDATA **) {
return E_NOTIMPL;
}
// Other
void SetBitmap(HBITMAP hBitmap);
IOleObject *GetOleObject(IOleClientSite *pOleClientSite, IStorage *pStorage);
};
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