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// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF
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// ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO
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// THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
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// PARTICULAR PURPOSE.
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//
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// Copyright (c) Microsoft Corporation. All rights reserved
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#include "Private.h"
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#include "Globals.h"
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#include "SampleIME.h"
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#include "CompositionProcessorEngine.h"
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//+---------------------------------------------------------------------------
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//
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// ITfCompositionSink::OnCompositionTerminated
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//
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// Callback for ITfCompositionSink. The system calls this method whenever
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// someone other than this service ends a composition.
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//----------------------------------------------------------------------------
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STDAPI CSampleIME::OnCompositionTerminated(TfEditCookie ecWrite, _In_ ITfComposition *pComposition)
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{
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// Clear dummy composition
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_RemoveDummyCompositionForComposing(ecWrite, pComposition);
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// Clear display attribute and end composition, _EndComposition will release composition for us
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ITfContext* pContext = _pContext;
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if (pContext)
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{
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pContext->AddRef();
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}
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_EndComposition(_pContext);
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_DeleteCandidateList(FALSE, pContext);
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if (pContext)
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{
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pContext->Release();
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pContext = nullptr;
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}
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return S_OK;
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}
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//+---------------------------------------------------------------------------
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//
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// _IsComposing
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//
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//----------------------------------------------------------------------------
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BOOL CSampleIME::_IsComposing()
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{
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return _pComposition != nullptr;
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}
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//+---------------------------------------------------------------------------
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//
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// _SetComposition
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//
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//----------------------------------------------------------------------------
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void CSampleIME::_SetComposition(_In_ ITfComposition *pComposition)
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{
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_pComposition = pComposition;
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}
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//+---------------------------------------------------------------------------
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//
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// _AddComposingAndChar
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//
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//----------------------------------------------------------------------------
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HRESULT CSampleIME::_AddComposingAndChar(TfEditCookie ec, _In_ ITfContext *pContext, _In_ CStringRange *pstrAddString)
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{
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HRESULT hr = S_OK;
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ULONG fetched = 0;
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TF_SELECTION tfSelection;
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if (pContext->GetSelection(ec, TF_DEFAULT_SELECTION, 1, &tfSelection, &fetched) != S_OK || fetched == 0)
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return S_FALSE;
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//
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// make range start to selection
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//
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ITfRange* pAheadSelection = nullptr;
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hr = pContext->GetStart(ec, &pAheadSelection);
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if (SUCCEEDED(hr))
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{
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hr = pAheadSelection->ShiftEndToRange(ec, tfSelection.range, TF_ANCHOR_START);
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if (SUCCEEDED(hr))
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{
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ITfRange* pRange = nullptr;
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BOOL exist_composing = _FindComposingRange(ec, pContext, pAheadSelection, &pRange);
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_SetInputString(ec, pContext, pRange, pstrAddString, exist_composing);
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if (pRange)
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{
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pRange->Release();
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}
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}
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}
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tfSelection.range->Release();
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if (pAheadSelection)
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{
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pAheadSelection->Release();
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}
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return S_OK;
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}
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//+---------------------------------------------------------------------------
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//
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// _AddCharAndFinalize
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//
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//----------------------------------------------------------------------------
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HRESULT CSampleIME::_AddCharAndFinalize(TfEditCookie ec, _In_ ITfContext *pContext, _In_ CStringRange *pstrAddString)
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{
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HRESULT hr = E_FAIL;
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ULONG fetched = 0;
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TF_SELECTION tfSelection;
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if ((hr = pContext->GetSelection(ec, TF_DEFAULT_SELECTION, 1, &tfSelection, &fetched)) != S_OK || fetched != 1)
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return hr;
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// we use SetText here instead of InsertTextAtSelection because we've already started a composition
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// we don't want to the app to adjust the insertion point inside our composition
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hr = tfSelection.range->SetText(ec, 0, pstrAddString->Get(), (LONG)pstrAddString->GetLength());
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if (hr == S_OK)
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{
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// update the selection, we'll make it an insertion point just past
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// the inserted text.
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tfSelection.range->Collapse(ec, TF_ANCHOR_END);
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pContext->SetSelection(ec, 1, &tfSelection);
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}
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tfSelection.range->Release();
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return hr;
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}
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//+---------------------------------------------------------------------------
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//
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// _FindComposingRange
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//
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//----------------------------------------------------------------------------
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BOOL CSampleIME::_FindComposingRange(TfEditCookie ec, _In_ ITfContext *pContext, _In_ ITfRange *pSelection, _Outptr_result_maybenull_ ITfRange **ppRange)
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{
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if (ppRange == nullptr)
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{
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return FALSE;
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}
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*ppRange = nullptr;
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// find GUID_PROP_COMPOSING
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ITfProperty* pPropComp = nullptr;
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IEnumTfRanges* enumComp = nullptr;
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HRESULT hr = pContext->GetProperty(GUID_PROP_COMPOSING, &pPropComp);
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if (FAILED(hr) || pPropComp == nullptr)
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{
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return FALSE;
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}
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hr = pPropComp->EnumRanges(ec, &enumComp, pSelection);
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if (FAILED(hr) || enumComp == nullptr)
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{
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pPropComp->Release();
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return FALSE;
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}
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BOOL isCompExist = FALSE;
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VARIANT var;
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ULONG fetched = 0;
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while (enumComp->Next(1, ppRange, &fetched) == S_OK && fetched == 1)
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{
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hr = pPropComp->GetValue(ec, *ppRange, &var);
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if (hr == S_OK)
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{
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if (var.vt == VT_I4 && var.lVal != 0)
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{
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isCompExist = TRUE;
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break;
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}
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}
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(*ppRange)->Release();
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*ppRange = nullptr;
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}
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pPropComp->Release();
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enumComp->Release();
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return isCompExist;
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}
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//+---------------------------------------------------------------------------
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//
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// _SetInputString
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//
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//----------------------------------------------------------------------------
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HRESULT CSampleIME::_SetInputString(TfEditCookie ec, _In_ ITfContext *pContext, _Out_opt_ ITfRange *pRange, _In_ CStringRange *pstrAddString, BOOL exist_composing)
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{
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ITfRange* pRangeInsert = nullptr;
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if (!exist_composing)
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{
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_InsertAtSelection(ec, pContext, pstrAddString, &pRangeInsert);
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if (pRangeInsert == nullptr)
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{
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return S_OK;
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}
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pRange = pRangeInsert;
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}
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if (pRange != nullptr)
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{
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pRange->SetText(ec, 0, pstrAddString->Get(), (LONG)pstrAddString->GetLength());
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}
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_SetCompositionLanguage(ec, pContext);
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_SetCompositionDisplayAttributes(ec, pContext, _gaDisplayAttributeInput);
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// update the selection, we'll make it an insertion point just past
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// the inserted text.
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ITfRange* pSelection = nullptr;
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TF_SELECTION sel;
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if ((pRange != nullptr) && (pRange->Clone(&pSelection) == S_OK))
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{
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pSelection->Collapse(ec, TF_ANCHOR_END);
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sel.range = pSelection;
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sel.style.ase = TF_AE_NONE;
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sel.style.fInterimChar = FALSE;
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pContext->SetSelection(ec, 1, &sel);
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pSelection->Release();
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}
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if (pRangeInsert)
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{
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pRangeInsert->Release();
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}
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return S_OK;
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}
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//+---------------------------------------------------------------------------
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//
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// _InsertAtSelection
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//
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//----------------------------------------------------------------------------
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HRESULT CSampleIME::_InsertAtSelection(TfEditCookie ec, _In_ ITfContext *pContext, _In_ CStringRange *pstrAddString, _Outptr_ ITfRange **ppCompRange)
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{
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ITfRange* rangeInsert = nullptr;
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ITfInsertAtSelection* pias = nullptr;
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HRESULT hr = S_OK;
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if (ppCompRange == nullptr)
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{
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hr = E_INVALIDARG;
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goto Exit;
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}
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*ppCompRange = nullptr;
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hr = pContext->QueryInterface(IID_ITfInsertAtSelection, (void **)&pias);
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if (FAILED(hr))
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{
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goto Exit;
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}
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hr = pias->InsertTextAtSelection(ec, TF_IAS_QUERYONLY, pstrAddString->Get(), (LONG)pstrAddString->GetLength(), &rangeInsert);
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if ( FAILED(hr) || rangeInsert == nullptr)
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{
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rangeInsert = nullptr;
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pias->Release();
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goto Exit;
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}
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*ppCompRange = rangeInsert;
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pias->Release();
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hr = S_OK;
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Exit:
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return hr;
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}
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//+---------------------------------------------------------------------------
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//
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// _RemoveDummyCompositionForComposing
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//
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//----------------------------------------------------------------------------
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HRESULT CSampleIME::_RemoveDummyCompositionForComposing(TfEditCookie ec, _In_ ITfComposition *pComposition)
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{
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HRESULT hr = S_OK;
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ITfRange* pRange = nullptr;
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if (pComposition)
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{
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hr = pComposition->GetRange(&pRange);
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if (SUCCEEDED(hr))
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{
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pRange->SetText(ec, 0, nullptr, 0);
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pRange->Release();
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}
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}
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return hr;
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}
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//+---------------------------------------------------------------------------
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//
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// _SetCompositionLanguage
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//
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//----------------------------------------------------------------------------
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BOOL CSampleIME::_SetCompositionLanguage(TfEditCookie ec, _In_ ITfContext *pContext)
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{
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HRESULT hr = S_OK;
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BOOL ret = TRUE;
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CCompositionProcessorEngine* pCompositionProcessorEngine = nullptr;
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pCompositionProcessorEngine = _pCompositionProcessorEngine;
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LANGID langidProfile = 0;
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pCompositionProcessorEngine->GetLanguageProfile(&langidProfile);
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ITfRange* pRangeComposition = nullptr;
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ITfProperty* pLanguageProperty = nullptr;
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// we need a range and the context it lives in
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hr = _pComposition->GetRange(&pRangeComposition);
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if (FAILED(hr))
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{
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ret = FALSE;
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goto Exit;
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}
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// get our the language property
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hr = pContext->GetProperty(GUID_PROP_LANGID, &pLanguageProperty);
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if (FAILED(hr))
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{
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ret = FALSE;
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goto Exit;
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}
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VARIANT var;
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var.vt = VT_I4; // we're going to set DWORD
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var.lVal = langidProfile;
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hr = pLanguageProperty->SetValue(ec, pRangeComposition, &var);
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if (FAILED(hr))
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{
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ret = FALSE;
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goto Exit;
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}
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pLanguageProperty->Release();
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pRangeComposition->Release();
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Exit:
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return ret;
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}
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