First commit.

EditSession.cpp

@@ -0,0 +1,99 @@
+// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF
+// ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO
+// THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
+// PARTICULAR PURPOSE.
+//
+// Copyright (c) Microsoft Corporation. All rights reserved
+
+#include "Private.h"
+#include "EditSession.h"
+#include "SampleIME.h"
+
+//+---------------------------------------------------------------------------
+//
+// ctor
+//
+//----------------------------------------------------------------------------
+
+CEditSessionBase::CEditSessionBase(_In_ CSampleIME *pTextService, _In_ ITfContext *pContext)
+{
+    _refCount = 1;
+    _pContext = pContext;
+    _pContext->AddRef();
+
+    _pTextService = pTextService;
+    _pTextService->AddRef();
+}
+
+//+---------------------------------------------------------------------------
+//
+// dtor
+//
+//----------------------------------------------------------------------------
+
+CEditSessionBase::~CEditSessionBase()
+{
+    _pContext->Release();
+    _pTextService->Release();
+}
+
+//+---------------------------------------------------------------------------
+//
+// QueryInterface
+//
+//----------------------------------------------------------------------------
+
+STDAPI CEditSessionBase::QueryInterface(REFIID riid, _Outptr_ void **ppvObj)
+{
+    if (ppvObj == nullptr)
+    {
+        return E_INVALIDARG;
+    }
+
+    *ppvObj = nullptr;
+
+    if (IsEqualIID(riid, IID_IUnknown) ||
+        IsEqualIID(riid, IID_ITfEditSession))
+    {
+        *ppvObj = (ITfLangBarItemButton *)this;
+    }
+
+    if (*ppvObj)
+    {
+        AddRef();
+        return S_OK;
+    }
+
+    return E_NOINTERFACE;
+}
+
+//+---------------------------------------------------------------------------
+//
+// AddRef
+//
+//----------------------------------------------------------------------------
+
+STDAPI_(ULONG) CEditSessionBase::AddRef(void)
+{
+    return ++_refCount;
+}
+
+//+---------------------------------------------------------------------------
+//
+// Release
+//
+//----------------------------------------------------------------------------
+
+STDAPI_(ULONG) CEditSessionBase::Release(void)
+{
+    LONG cr = --_refCount;
+
+    assert(_refCount >= 0);
+
+    if (_refCount == 0)
+    {
+        delete this;
+    }
+
+    return cr;
+}