HRESULT CCandidateList::_StartCandidateList(TfClientId tfClientId, ITfDocumentMgr *pDocumentMgr, ITfContext *pContextDocument, TfEditCookie ec, ITfRange *pRangeComposition){
TfEditCookie ecTmp;
HRESULT hr = E_FAIL;
BOOL fClipped;
// clear the previous candidate list.
// only one candidate window is supported.
_EndCandidateList();
// create a new context on the document manager object for
// the candidate ui.
if (FAILED(pDocumentMgr->CreateContext(tfClientId, 0, NULL, &_pContextCandidateWindow, &ecTmp)))
return E_FAIL;
// push the new context.
if (FAILED(pDocumentMgr->Push(_pContextCandidateWindow)))
goto Exit;
_pDocumentMgr = pDocumentMgr;
_pDocumentMgr->AddRef();
_pContextDocument = pContextDocument;
_pContextDocument->AddRef();
_pRangeComposition = pRangeComposition;
_pRangeComposition->AddRef();
// advise ITfContextKeyEventSink to the new context.
if (FAILED(_AdviseContextKeyEventSink()))
goto Exit;
// advise ITfTextLayoutSink to the document context.
if (FAILED(_AdviseTextLayoutSink()))
goto Exit;
//ÉêÇ뻺³åÇø
int cchMax = 10;
wchar_t *pchText = new wchar_t[cchMax];
//»ñµÃÊäÈë×Ö·û
ULONG pcch = 0;
if(_pRangeComposition->GetText(ec, NULL, pchText, cchMax, &pcch) == S_OK){
pchText[pcch] = 0;
}
//²éѯºòÑ¡×Ö
if(!CandidateTree->ForwardTo(pchText[pcch - 1])){
_pRangeComposition->Collapse(ec, TF_ANCHOR_END);
_pTextService->_TerminateComposition(ec, _pContextDocument);
}else{
CCandidateTree::Node *node = CandidateTree->GetCurrent();
if(node != NULL){
//ÏÔʾ/ÊäÈëºòÑ¡×Ö
if(node->IsEnd()){
_InputDefaultCandidate(ec);
// create an instance of CCandidateWindow class.
}else if(_pCandidateWindow = new CCandidateWindow()){
RECT rc;
ITfContextView *pContextView;
// get an active view of the document context.
if (FAILED(pContextDocument->GetActiveView(&pContextView)))
goto Exit;
// get text extent for the range of the composition.
if (FAILED(pContextView->GetTextExt(ec, pRangeComposition, &rc, &fClipped)))
goto Exit;
pContextView->Release();
// create the dummy candidate window
if (!_pCandidateWindow->_Create())
goto Exit;
_pCandidateWindow->_Move(rc.left, rc.bottom);
_pCandidateWindow->_Show();
hr = S_OK;
}
}
}
//ÊÍ·Å»º³åÇø
delete[] pchText;
Exit:
if (FAILED(hr))
{
_EndCandidateList();
}
return hr;
}
BOOL CInputModeWindow::_Create(CTextService *pTextService, ITfContext *pContext, BOOL bCandidateWindow, HWND hWnd)
{
POINT pt = {0, 0};
if(pContext != nullptr)
{
_pContext = pContext;
_pContext->AddRef();
if(_AdviseTextLayoutSink() != S_OK)
{
return FALSE;
}
}
if(!bCandidateWindow && _pContext == nullptr)
{
return FALSE;
}
_pTextService = pTextService;
_pTextService->AddRef();
_bCandidateWindow = bCandidateWindow;
if(_bCandidateWindow)
{
_hwndParent = hWnd;
}
else
{
ITfContextView *pContextView;
if(_pContext->GetActiveView(&pContextView) == S_OK)
{
if(FAILED(pContextView->GetWnd(&_hwndParent)) || _hwndParent == nullptr)
{
_hwndParent = GetFocus();
}
SafeRelease(&pContextView);
}
}
_hwnd = CreateWindowExW(WS_EX_TOOLWINDOW | WS_EX_TOPMOST | WS_EX_NOACTIVATE,
InputModeWindowClass, L"", WS_POPUP,
CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT,
_hwndParent, nullptr, g_hInst, this);
if(_hwnd == nullptr)
{
return FALSE;
}
HDC hdc = GetDC(nullptr);
_size = MulDiv(16, GetDeviceCaps(hdc, LOGPIXELSY), 96);
ReleaseDC(nullptr, hdc);
if(_bCandidateWindow)
{
RECT r;
GetClientRect(_hwndParent, &r);
pt.x = r.left;
pt.y = r.bottom;
ClientToScreen(_hwndParent, &pt);
}
SetWindowPos(_hwnd, HWND_TOPMOST, pt.x, pt.y + IM_MERGIN_Y,
_size + IM_MERGIN_X * 2, _size + IM_MERGIN_Y * 2, SWP_NOACTIVATE);
return TRUE;
}
HRESULT CCandidateList::_StartCandidateList(TfClientId tfClientId, ITfDocumentMgr *pDocumentMgr,
ITfContext *pContext, TfEditCookie ec, ITfRange *pRange, BOOL reg, BOOL comp)
{
HRESULT hr = E_FAIL;
TfEditCookie ecTextStore;
ITfContextView *pContextView;
HWND hwnd = NULL;
_EndCandidateList();
if(pDocumentMgr->CreateContext(tfClientId, 0, NULL, &_pContextCandidateWindow, &ecTextStore) != S_OK)
{
return E_FAIL;
}
if(pDocumentMgr->Push(_pContextCandidateWindow) != S_OK)
{
goto exit;
}
_pDocumentMgr = pDocumentMgr;
_pDocumentMgr->AddRef();
_pContextDocument = pContext;
_pContextDocument->AddRef();
_pRangeComposition = pRange;
_pRangeComposition->AddRef();
_ec = ec;
_comp = comp;
if(_AdviseContextKeyEventSink() != S_OK)
{
goto exit;
}
if(_AdviseTextLayoutSink() != S_OK)
{
goto exit;
}
try
{
_pCandidateWindow = new CCandidateWindow(_pTextService, this);
if(pContext->GetActiveView(&pContextView) == S_OK)
{
if(!_pTextService->_UILessMode && _pCandidateWindow->_CanShowUIElement())
{
if(FAILED(pContextView->GetWnd(&hwnd)) || hwnd == NULL)
{
hwnd = GetFocus();
}
}
SafeRelease(&pContextView);
}
if(!_pCandidateWindow->_Create(hwnd, NULL, 0, 0, reg, comp))
{
goto exit;
}
HRESULT hrSession = E_FAIL;
try
{
CCandidateWindowEditSession *pEditSession =
new CCandidateWindowEditSession(_pTextService, _pContextDocument, _pRangeComposition, _pCandidateWindow);
// Asynchronous
pContext->RequestEditSession(ec, pEditSession, TF_ES_ASYNC | TF_ES_READWRITE, &hrSession);
SafeRelease(&pEditSession);
}
catch(...)
{
}
if(hrSession != TF_S_ASYNC)
{
hr = E_FAIL;
goto exit;
}
hr = S_OK;
}
catch(...)
{
}
exit:
if(hr != S_OK)
{
_EndCandidateList();
}
return hr;
}
