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107 lines
3.0 KiB
107 lines
3.0 KiB
//
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// hello.cpp
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//
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// "Hello World" menu item handler.
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//
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#include "globals.h"
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#include "case.h"
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#include "editsess.h"
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class CHelloEditSession : public CEditSessionBase
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{
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public:
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CHelloEditSession(ITfContext *pContext) : CEditSessionBase(pContext) {}
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// ITfEditSession
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STDMETHODIMP DoEditSession(TfEditCookie ec);
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};
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//+---------------------------------------------------------------------------
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//
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// _Menu_HelloWord
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//
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// Insert the string "Hello world!" to the focus context.
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//----------------------------------------------------------------------------
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void CCaseTextService::_Menu_HelloWord(CCaseTextService *_this)
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{
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ITfDocumentMgr *pFocusDoc;
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ITfContext *pContext;
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CHelloEditSession *pHelloEditSession;
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HRESULT hr;
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// get the focus document
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if (_this->_pThreadMgr->GetFocus(&pFocusDoc) != S_OK)
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return;
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// we want the topmost context, since the main doc context could be
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// superceded by a modal tip context
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if (pFocusDoc->GetTop(&pContext) != S_OK)
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{
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pContext = NULL;
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goto Exit;
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}
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if (pHelloEditSession = new CHelloEditSession(pContext))
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{
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// we need a document write lock to insert text
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// the CHelloEditSession will do all the work when the
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// CHelloEditSession::DoEditSession method is called by the context
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pContext->RequestEditSession(_this->_tfClientId, pHelloEditSession, TF_ES_READWRITE | TF_ES_ASYNCDONTCARE, &hr);
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pHelloEditSession->Release();
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}
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Exit:
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SafeRelease(pContext);
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pFocusDoc->Release();
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}
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//+---------------------------------------------------------------------------
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//
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// DoEditSession
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//
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//----------------------------------------------------------------------------
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STDAPI CHelloEditSession::DoEditSession(TfEditCookie ec)
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{
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InsertTextAtSelection(ec, _pContext, L"Hello world!", wcslen(L"Hello world!"));
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return S_OK;
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}
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//+---------------------------------------------------------------------------
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//
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// InsertTextAtSelection
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//
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//----------------------------------------------------------------------------
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void InsertTextAtSelection(TfEditCookie ec, ITfContext *pContext, const WCHAR *pchText, ULONG cchText)
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{
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ITfInsertAtSelection *pInsertAtSelection;
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ITfRange *pRange;
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TF_SELECTION tfSelection;
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// we need a special interface to insert text at the selection
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if (pContext->QueryInterface(IID_ITfInsertAtSelection, (void **)&pInsertAtSelection) != S_OK)
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return;
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// insert the text
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if (pInsertAtSelection->InsertTextAtSelection(ec, 0, pchText, cchText, &pRange) != S_OK)
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goto Exit;
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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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pRange->Collapse(ec, TF_ANCHOR_END);
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tfSelection.range = pRange;
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tfSelection.style.ase = TF_AE_NONE;
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tfSelection.style.fInterimChar = FALSE;
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pContext->SetSelection(ec, 1, &tfSelection);
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pRange->Release();
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Exit:
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pInsertAtSelection->Release();
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}
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