// callback from edit session for starting composition
HRESULT TextService::doStartCompositionEditSession(TfEditCookie cookie, StartCompositionEditSession* session) {
ITfContext* context = session->context();
ITfContextComposition* contextComposition;
if(context->QueryInterface(IID_ITfContextComposition, (void**)&contextComposition) == S_OK) {
// get current insertion point in the current context
ITfRange* range = NULL;
ITfInsertAtSelection* insertAtSelection;
if(context->QueryInterface(IID_ITfInsertAtSelection, (void **)&insertAtSelection) == S_OK) {
// get current selection range & insertion position (query only, did not insert any text)
insertAtSelection->InsertTextAtSelection(cookie, TF_IAS_QUERYONLY, NULL, 0, &range);
insertAtSelection->Release();
}
if(range) {
if(contextComposition->StartComposition(cookie, range, (ITfCompositionSink*)this, &composition_) == S_OK) {
// according to the TSF sample provided by M$, we need to reset current
// selection here. (maybe the range is altered by StartComposition()?
// So mysterious. TSF is absolutely overly-engineered!
TF_SELECTION selection;
selection.range = range;
selection.style.ase = TF_AE_NONE;
selection.style.fInterimChar = FALSE;
context->SetSelection(cookie, 1, &selection);
// we did not release composition_ object. we store it for use later
}
range->Release();
}
contextComposition->Release();
}
return S_OK;
}
BOOL CTextService::_IsKeyboardDisabled()
{
ITfCompartmentMgr *pCompMgr = NULL;
ITfDocumentMgr *pDocMgrFocus = NULL;
ITfContext *pContext = NULL;
BOOL fDisabled = FALSE;
if ((_pThreadMgr->GetFocus(&pDocMgrFocus) != S_OK) ||
(pDocMgrFocus == NULL))
{
// if there is no focus document manager object, the keyboard
// is disabled.
fDisabled = TRUE;
goto Exit;
}
if ((pDocMgrFocus->GetTop(&pContext) != S_OK) ||
(pContext == NULL))
{
// if there is no context object, the keyboard is disabled.
fDisabled = TRUE;
goto Exit;
}
if (pContext->QueryInterface(IID_ITfCompartmentMgr, (void **)&pCompMgr) == S_OK)
{
ITfCompartment *pCompartmentDisabled;
ITfCompartment *pCompartmentEmptyContext;
// Check GUID_COMPARTMENT_KEYBOARD_DISABLED.
if (pCompMgr->GetCompartment(GUID_COMPARTMENT_KEYBOARD_DISABLED, &pCompartmentDisabled) == S_OK)
{
VARIANT var;
if (S_OK == pCompartmentDisabled->GetValue(&var))
{
if (var.vt == VT_I4) // Even VT_EMPTY, GetValue() can succeed
{
fDisabled = (BOOL)var.lVal;
}
}
pCompartmentDisabled->Release();
}
// Check GUID_COMPARTMENT_EMPTYCONTEXT.
if (pCompMgr->GetCompartment(GUID_COMPARTMENT_EMPTYCONTEXT, &pCompartmentEmptyContext) == S_OK)
{
VARIANT var;
if (S_OK == pCompartmentEmptyContext->GetValue(&var))
{
if (var.vt == VT_I4) // Even VT_EMPTY, GetValue() can succeed
{
fDisabled = (BOOL)var.lVal;
}
}
pCompartmentEmptyContext->Release();
}
pCompMgr->Release();
}
Exit:
if (pContext)
pContext->Release();
if (pDocMgrFocus)
pDocMgrFocus->Release();
return fDisabled;
}