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#include "headers.h"
class CREOleCallback: public IRichEditOleCallback
{
private:
unsigned refCount;
IStorage *pictStg;
int nextStgId;
public:
CREOleCallback()
{
refCount = 1;
pictStg = 0;
nextStgId = 0;
}
HRESULT STDMETHODCALLTYPE QueryInterface(REFIID riid, LPVOID * ppvObj)
{
if (IsEqualIID(riid, IID_IRichEditOleCallback))
{
*ppvObj = this;
this->AddRef();
return S_OK;
}
*ppvObj = NULL;
return E_NOINTERFACE;
}
ULONG STDMETHODCALLTYPE AddRef()
{
if (this->refCount == 0) {
if (S_OK != StgCreateDocfile(NULL, STGM_READWRITE | STGM_SHARE_EXCLUSIVE | STGM_CREATE | STGM_DELETEONRELEASE, 0, &this->pictStg))
this->pictStg = NULL;
this->nextStgId = 0;
}
return ++this->refCount;
}
ULONG STDMETHODCALLTYPE Release()
{
if (--this->refCount == 0) {
if (this->pictStg)
this->pictStg->Release();
}
return this->refCount;
}
HRESULT STDMETHODCALLTYPE ContextSensitiveHelp(BOOL fEnterMode)
{
return S_OK;
}
HRESULT STDMETHODCALLTYPE DeleteObject(LPOLEOBJECT lpoleobj)
{
return S_OK;
}
HRESULT STDMETHODCALLTYPE GetClipboardData(CHARRANGE * lpchrg, DWORD reco, LPDATAOBJECT * lplpdataobj)
{
return E_NOTIMPL;
}
HRESULT STDMETHODCALLTYPE GetContextMenu(WORD seltype, LPOLEOBJECT lpoleobj, CHARRANGE * lpchrg, HMENU * lphmenu)
{
return E_INVALIDARG;
}
HRESULT STDMETHODCALLTYPE GetDragDropEffect(BOOL fDrag, DWORD grfKeyState, LPDWORD pdwEffect)
{
return S_OK;
}
HRESULT STDMETHODCALLTYPE GetInPlaceContext(LPOLEINPLACEFRAME * lplpFrame, LPOLEINPLACEUIWINDOW * lplpDoc, LPOLEINPLACEFRAMEINFO lpFrameInfo)
{
return E_INVALIDARG;
}
HRESULT STDMETHODCALLTYPE GetNewStorage(LPSTORAGE * lplpstg)
{
WCHAR szwName[64];
char szName[64];
wsprintfA(szName, "s%u", this->nextStgId);
MultiByteToWideChar(CP_ACP, 0, szName, -1, szwName, sizeof(szwName) / sizeof(szwName[0]));
if (this->pictStg == NULL)
return STG_E_MEDIUMFULL;
return this->pictStg->CreateStorage(szwName, STGM_READWRITE | STGM_SHARE_EXCLUSIVE | STGM_CREATE, 0, 0, lplpstg);
}
HRESULT STDMETHODCALLTYPE QueryAcceptData(LPDATAOBJECT lpdataobj, CLIPFORMAT * lpcfFormat, DWORD reco, BOOL fReally, HGLOBAL hMetaPict)
{
return S_OK;
}
HRESULT STDMETHODCALLTYPE QueryInsertObject(LPCLSID lpclsid, LPSTORAGE lpstg, LONG cp)
{
return S_OK;
}
HRESULT STDMETHODCALLTYPE ShowContainerUI(BOOL fShow)
{
return S_OK;
}
};
IRichEditOleCallback *reOleCallback = 0;
void InitRichEdit(ITextServices *ts)
{
LRESULT lResult;
ts->TxSendMessage(EM_SETOLECALLBACK, 0, (LPARAM)reOleCallback, &lResult);
}
LRESULT CALLBACK RichEditProxyWndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
ITextServices *ts = (ITextServices *)GetWindowLongPtr(hwnd, GWLP_USERDATA);
if (ts && (msg != WM_DESTROY))
{
LRESULT lResult;
ts->TxSendMessage(msg, wParam, lParam, &lResult);
return lResult;
}
return 1;
}
void LoadRichEdit()
{
OleInitialize(NULL);
// LoadLibrary("riched20.dll");
reOleCallback = new CREOleCallback;
// CoInitializeEx(NULL,COINIT_MULTITHREADED);
WNDCLASSEX wcl;
wcl.cbSize = sizeof(wcl);
wcl.lpfnWndProc = RichEditProxyWndProc;
wcl.style = CS_GLOBALCLASS;
wcl.cbClsExtra = 0;
wcl.cbWndExtra = 0;
wcl.hInstance = hInst;
wcl.hIcon = NULL;
wcl.hCursor = LoadCursor(NULL, IDC_ARROW);
wcl.hbrBackground = (HBRUSH)GetStockObject(LTGRAY_BRUSH);
wcl.lpszMenuName = NULL;
wcl.lpszClassName = _T("NBRichEditProxyWndClass");
wcl.hIconSm = 0;
RegisterClassEx(&wcl);
}
void UnloadRichEdit()
{
delete reOleCallback;
OleUninitialize();
}
HWND CreateProxyWindow(ITextServices *ts)
{
HWND hwnd = CreateWindow(_T("NBRichEditProxyWndClass"), _T(""), 0, 0, 0, 0, 0, 0, 0, hInst, 0);
SetWindowLongPtr(hwnd, GWLP_USERDATA, (LONG_PTR)ts);
return hwnd;
}
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