STDMETHODIMP TextService::OnKeyDown(ITfContext *pContext, WPARAM wParam, LPARAM lParam, BOOL *pfEaten) {
// Some applications do not trigger OnTestKeyDown()
// So we need to test it again here! Windows TSF sucks!
if(isKeyboardDisabled(pContext) || !isKeyboardOpened())
*pfEaten = FALSE;
else {
KeyEvent keyEvent(WM_KEYDOWN, wParam, lParam);
*pfEaten = (BOOL)filterKeyDown(keyEvent);
if(*pfEaten) { // we want to eat the key
HRESULT sessionResult;
// ask TSF for an edit session. If editing is approved by TSF,
// KeyEditSession::DoEditSession will be called, which in turns
// call back to TextService::doKeyEditSession().
// So the real key handling is relayed to TextService::doKeyEditSession().
KeyEditSession* session = new KeyEditSession(this, pContext, keyEvent);
// We use TF_ES_SYNC here, so the request becomes synchronus and blocking.
// KeyEditSession::DoEditSession() and TextService::doKeyEditSession() will be
// called before RequestEditSession() returns.
pContext->RequestEditSession(clientId_, session, TF_ES_SYNC|TF_ES_READWRITE, &sessionResult);
*pfEaten = session->result_; // tell TSF if we handled the key
session->Release();
}
}
return S_OK;
}
STDMETHODIMP TextService::OnTestKeyUp(ITfContext *pContext, WPARAM wParam, LPARAM lParam, BOOL *pfEaten) {
if(isKeyboardDisabled(pContext) || !isKeyboardOpened())
*pfEaten = FALSE;
else {
KeyEvent keyEvent(WM_KEYUP, wParam, lParam);
HRESULT sessionResult;
KeyEditSession* session = new KeyEditSession(this, pContext, keyEvent, true);
pContext->RequestEditSession(clientId_, session, TF_ES_SYNC | TF_ES_READWRITE, &sessionResult);
*pfEaten = session->result_; // tell TSF if we handled the key
session->Release();
}
return S_OK;
}
STDMETHODIMP TextService::OnKeyUp(ITfContext *pContext, WPARAM wParam, LPARAM lParam, BOOL *pfEaten) {
// Some applications do not trigger OnTestKeyDown()
// So we need to test it again here! Windows TSF sucks!
if(isKeyboardDisabled(pContext) || !isKeyboardOpened())
*pfEaten = FALSE;
else {
KeyEvent keyEvent(WM_KEYUP, wParam, lParam);
HRESULT sessionResult;
KeyEditSession* session = new KeyEditSession(this, pContext, keyEvent, false);
pContext->RequestEditSession(clientId_, session, TF_ES_SYNC|TF_ES_READWRITE, &sessionResult);
*pfEaten = session->result_; // tell TSF if we handled the key
session->Release();
}
return S_OK;
}
