ciderpress/util/ImageDataObject.cpp
Andy McFadden c78017b1d2 More source code shuffling
Moved comments and return types, switched to uint types, added
"override" keyword.
2014-11-25 14:34:14 -08:00

139 lines
4.2 KiB
C++

// ImageDataObject.h: Impementation for IDataObject Interface to be used
// in inserting bitmap to the RichEdit Control.
//
// Author : Hani Atassi (atassi@arabteam2000.com)
//
// How to use : Just call the static member InsertBitmap with
// the appropriate parrameters.
//
// Known bugs :
//
//
//////////////////////////////////////////////////////////////////////
#include "stdafx.h"
#include "ImageDataObject.h"
#ifdef _DEBUG
#undef THIS_FILE
static char THIS_FILE[]=__FILE__;
#define new DEBUG_NEW
#endif
//////////////////////////////////////////////////////////////////////
// Static member functions
//////////////////////////////////////////////////////////////////////
void CImageDataObject::InsertBitmap(IRichEditOle* pRichEditOle, HBITMAP hBitmap)
{
SCODE sc;
// Get the image data object
//
CImageDataObject *pods = new CImageDataObject;
LPDATAOBJECT lpDataObject;
pods->QueryInterface(IID_IDataObject, (void **)&lpDataObject);
pods->SetBitmap(hBitmap);
// Get the RichEdit container site
//
IOleClientSite *pOleClientSite;
pRichEditOle->GetClientSite(&pOleClientSite);
// Initialize a Storage Object
//
IStorage *pStorage;
LPLOCKBYTES lpLockBytes = NULL;
sc = ::CreateILockBytesOnHGlobal(NULL, TRUE, &lpLockBytes);
if (sc != S_OK)
AfxThrowOleException(sc);
ASSERT(lpLockBytes != NULL);
sc = ::StgCreateDocfileOnILockBytes(lpLockBytes,
STGM_SHARE_EXCLUSIVE|STGM_CREATE|STGM_READWRITE, 0, &pStorage);
if (sc != S_OK)
{
VERIFY(lpLockBytes->Release() == 0);
lpLockBytes = NULL;
AfxThrowOleException(sc);
}
ASSERT(pStorage != NULL);
// The final ole object which will be inserted in the richedit control
//
IOleObject *pOleObject;
pOleObject = pods->GetOleObject(pOleClientSite, pStorage);
// all items are "contained" -- this makes our reference to this object
// weak -- which is needed for links to embedding silent update.
OleSetContainedObject(pOleObject, TRUE);
// Now Add the object to the RichEdit
//
REOBJECT reobject;
ZeroMemory(&reobject, sizeof(REOBJECT));
reobject.cbStruct = sizeof(REOBJECT);
CLSID clsid;
sc = pOleObject->GetUserClassID(&clsid);
if (sc != S_OK)
AfxThrowOleException(sc);
reobject.clsid = clsid;
reobject.cp = REO_CP_SELECTION;
reobject.dvaspect = DVASPECT_CONTENT;
reobject.poleobj = pOleObject;
reobject.polesite = pOleClientSite;
reobject.pstg = pStorage;
// Insert the bitmap at the current location in the richedit control
//
pRichEditOle->InsertObject(&reobject);
// Release all unnecessary interfaces
//
pOleObject->Release();
pOleClientSite->Release();
lpLockBytes->Release(); // new
pStorage->Release();
lpDataObject->Release();
}
//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////
void CImageDataObject::SetBitmap(HBITMAP hBitmap)
{
ASSERT(hBitmap);
STGMEDIUM stgm;
stgm.tymed = TYMED_GDI; // Storage medium = HBITMAP handle
stgm.hBitmap = hBitmap;
stgm.pUnkForRelease = NULL; // Use ReleaseStgMedium
FORMATETC fm;
fm.cfFormat = CF_BITMAP; // Clipboard format = CF_BITMAP
fm.ptd = NULL; // Target Device = Screen
fm.dwAspect = DVASPECT_CONTENT; // Level of detail = Full content
fm.lindex = -1; // Index = Not applicaple
fm.tymed = TYMED_GDI; // Storage medium = HBITMAP handle
this->SetData(&fm, &stgm, TRUE);
}
IOleObject *CImageDataObject::GetOleObject(IOleClientSite *pOleClientSite, IStorage *pStorage)
{
ASSERT(m_stgmed.hBitmap);
SCODE sc;
IOleObject *pOleObject;
sc = ::OleCreateStaticFromData(this, IID_IOleObject, OLERENDER_FORMAT,
&m_fromat, pOleClientSite, pStorage, (void **)&pOleObject);
if (sc != S_OK)
AfxThrowOleException(sc);
return pOleObject;
}