propchg.cpp

Windows CE 6.0 Word Application 源码

 *	@rdesc
 *		S_OK - Notification successfully processed.
 */
HRESULT	CTxtEdit::OnShowAccelerator(
	BOOL fPropertyFlag)		//@parm TRUE = show accelerator		
{
	TRACEBEGIN(TRCSUBSYSTS, TRCSCOPEINTERN, "CTxtEdit::OnShowAccelerator");

	// Get the new accelerator character
	HRESULT hr = UpdateAccelerator();

	// Update the view - we update even in the face of an error return.
	// The point is that errors will be rare (non-existent?) and the update
	// will work even in the face of the error so why bother conditionalizing
	// the execution.
	NeedViewUpdate(TRUE);

	return hr;
}

/* 
 *	CTxtEdit::OnUsePassword (fPropertyFlag)
 *
 *	@mfunc
 *		Update use-password property
 *
 *	@rdesc
 *		S_OK - Notification successfully processed.
 */
HRESULT	CTxtEdit::OnUsePassword(
	BOOL fPropertyFlag)		//@parm TRUE = use password character
{
	TRACEBEGIN(TRCSUBSYSTS, TRCSCOPEINTERN, "CTxtEdit::OnUsePassword");

	Assert((DWORD)fPropertyFlag <= 1);			// Be sure it's C boolean

	_fUsePassword = fPropertyFlag;
	_pdp->UpdateView();					// State changed so update view
	
	return S_OK;
}

/* 
 *	CTxtEdit::OnTxHideSelectionChange (fHideSelection)
 *
 *	@mfunc
 *		Notify text services that hide-selection property changed
 *
 *	@rdesc
 *		S_OK - Notification successfully processed.
 */
HRESULT	CTxtEdit::OnTxHideSelectionChange(
	BOOL fHideSelection)		//@parm TRUE = hide selection
{
	TRACEBEGIN(TRCSUBSYSTS, TRCSCOPEINTERN, "CTxtEdit::OnTxHideSelectionChange");

	_fHideSelection = fHideSelection;

	if(_fFocus)								// If we have the focus, don't
		return S_OK;						//  change the current selection
											//  display status
	CTxtSelection * psel = GetSel();
		 
	if(psel)		
		psel->ShowSelection(!fHideSelection);

	if (!_fInPlaceActive)
	{
		TxInvalidateRect(NULL, FALSE);		// Since _fInPlaceActive = FALSE,
		TxUpdateWindow();					//  this only tells user.exe to
	}										//  send a WM_PAINT message

	return S_OK;
}

/* 
 *	CTxtEdit::OnSaveSelection (fPropertyFlag)
 *
 *	@mfunc
 *		Notify text services that save-selection property changed
 *
 *	@rdesc
 *		S_OK - Notification successfully processed.
 */
HRESULT	CTxtEdit::OnSaveSelection(
	BOOL fPropertyFlag)		//@parm TRUE = save selection when inactive
{
	TRACEBEGIN(TRCSUBSYSTS, TRCSCOPEINTERN, "CTxtEdit::OnSaveSelection");

	return S_OK;
}	

/* 
 *	CTxtEdit::OnAutoWordSel (fPropertyFlag)
 *
 *	@mfunc
 *		Notify text services that auto-word-selection property changed
 *
 *	@rdesc
 *		S_OK - Notification successfully processed.
 */
HRESULT	CTxtEdit::OnAutoWordSel(
	BOOL fPropertyFlag)		//@parm TRUE = auto word selection on
{
	TRACEBEGIN(TRCSUBSYSTS, TRCSCOPEINTERN, "CTxtEdit::OnAutoWordSel");

	// We call back to the host when we need to know, so we don't bother doing
	// anything in response to this notification.

	return S_OK;
}

/* 
 *	CTxtEdit::OnTxVerticalChange (fVertical)
 *
 *	@mfunc
 *		Notify text services that vertical property changed
 *
 *	@rdesc
 *		S_OK - Notification successfully processed.
 */
HRESULT	CTxtEdit::OnTxVerticalChange(
	BOOL fVertical)			//@parm TRUE - text vertically oriented.
{
	TRACEBEGIN(TRCSUBSYSTS, TRCSCOPEINTERN, "CTxtEdit::OnTxVerticalChange");

	// We pretend like something actually happened.

	GetCallMgr()->SetChangeEvent(CN_GENERIC);
	return S_OK;
}

/* 
 *	CTxtEdit::OnClientRectChange (fPropertyFlag)
 *
 *	@mfunc
 *		Notify text services that client rectangle changed
 *
 *	@rdesc
 *		S_OK - Notification successfully processed.
 */
HRESULT	CTxtEdit::OnClientRectChange(
	BOOL fPropertyFlag)		//@parm Ignored for this property	
{
	TRACEBEGIN(TRCSUBSYSTS, TRCSCOPEINTERN, "CTxtEdit::OnClientRectChange");

	// It is unclear whether we need to actually do anything for this 
	// notification. Logically, the change of this property is followed
	// closely by some kind of operation which will cause the display
	// cache to be updated anyway. The old code is left here as an 
	// example of what might be done if it turns out we need to do
	// anything. For now, we will simply return S_OK to this notification.
#if 0

	if (_fInPlaceActive)
	{
		RECT rc;

		if(_phost->TxGetClientRect(&rc) == NOERROR )
		{
			_pdp->OnClientRectChange(rc);
		}

		return S_OK;
	}

	return NeedViewUpdate(fPropertyFlag);
#endif // 0

	// With a client rect change we do need to update the caret when
	// we get redrawn even if the basic information did not change. 
	_pdp->SetUpdateCaret();

	return S_OK;
}

/* 
 *	CTxtEdit::OnCharFormatChange (fPropertyFlag)
 *
 *	@mfunc
 *		Update default CCharFormat
 *
 *	@rdesc
 *		S_OK - update successfully processed.
 */
HRESULT CTxtEdit::OnCharFormatChange(
	BOOL fPropertyFlag )		//@parm Not used
{
	TRACEBEGIN(TRCSUBSYSTS, TRCSCOPEINTERN, "CTxtEdit::OnCharFormatChange");

	CCharFormat CF;

	HRESULT hr = TxGetDefaultCharFormat(&CF);
	if(hr == NOERROR)
	{
		// OnSetCharFormat handles updating the view.
		hr = OnSetCharFormat(0, &CF, NULL) ? NOERROR : E_FAIL;
	}
	return hr;
}

/* 
 *	CTxtEdit::OnParaFormatChange (fPropertyFlag)
 *
 *	@mfunc
 *		Update default CParaFormat
 *
 *	@rdesc
 *		S_OK - update successfully processed
 *
 *	@devnote
 *		Because Forms^3 doesn't set cbSize correctly, we limit this API 
 *		to PARAFORMAT (until they fix it).
 */
HRESULT CTxtEdit::OnParaFormatChange(
	BOOL fPropertyFlag )		//@parm Not used
{
	TRACEBEGIN(TRCSUBSYSTS, TRCSCOPEINTERN, "CTxtEdit::OnParaFormatChange");

	CParaFormat PF;

	HRESULT hr = TxGetDefaultParaFormat(&PF);
	if( hr == NOERROR )
	{
		// OnSetParaFormat handles updating the view.
		hr = OnSetParaFormat(SPF_SETDEFAULT, &PF, NULL)
				? NOERROR : E_FAIL;
	}
	return hr;
}

/* 
 *	CTxtEdit::NeedViewUpdate (fPropertyFlag)
 *
 *	@mfunc
 *		Notify text services that view of data changed
 *
 *	@rdesc
 *		S_OK - Notification successfully processed.
 */
HRESULT	CTxtEdit::NeedViewUpdate(
	BOOL fPropertyFlag )
{
	TRACEBEGIN(TRCSUBSYSTS, TRCSCOPEINTERN, "CTxtEdit::NeedViewUpdate");

	_pdp->UpdateView();
	return S_OK;
}

/* 
 *	CTxtEdit::OnTxBackStyleChange (fPropertyFlag)
 *
 *	@mfunc
 *		Notify text services that background style changed
 *
 *	@rdesc
 *		S_OK - Notification successfully processed.
 */
HRESULT	CTxtEdit::OnTxBackStyleChange(
	BOOL fPropertyFlag )	//@parm Ignored for this property 
{
	TRACEBEGIN(TRCSUBSYSTS, TRCSCOPEINTERN, "CTxtEdit::OnTxBackStyleChange");

	_fTransparent = (TxGetBackStyle() == TXTBACK_TRANSPARENT);
	TxInvalidateRect(NULL, FALSE);
	return S_OK;
}

/* 
 *	CTxtEdit::OnAllowBeep (fPropertyFlag)
 *
 *	@mfunc
 *		Notify text services that beep property changed
 *
 *	@rdesc
 *		S_OK - Notification successfully processed.
 */
HRESULT	CTxtEdit::OnAllowBeep(
	BOOL fPropertyFlag)	//@parm New state of property 
{
	TRACEBEGIN(TRCSUBSYSTS, TRCSCOPEINTERN, "CTxtEdit::OnAllowBeep");

	_fAllowBeep = fPropertyFlag;
	return S_OK;
}

/* 
 *	CTxtEdit::OnMaxLengthChange (fPropertyFlag)
 *
 *	@mfunc
 *		Notify text services that max-length property changed
 *
 *	@rdesc
 *		S_OK - Notification successfully processed.
 */
HRESULT	CTxtEdit::OnMaxLengthChange(
	BOOL fPropertyFlag)	//@parm New state of property 
{
	TRACEBEGIN(TRCSUBSYSTS, TRCSCOPEINTERN, "CTxtEdit::OnMaxLengthChange");

	// Query host for max text length
	DWORD length = INFINITE;
	_phost->TxGetMaxLength(&length);
	_cchTextMost = length;

	return S_OK;
}

/* 
 *	CTxtEdit::OnWordWrapChange (fPropertyFlag)
 *
 *	@mfunc
 *		Notify text services that word-wrap property changed
 *
 *	@rdesc
 *		S_OK - Notification successfully processed.
 */
HRESULT	CTxtEdit::OnWordWrapChange(
	BOOL fPropertyFlag)	//@parm TRUE = do word wrap
{
	TRACEBEGIN(TRCSUBSYSTS, TRCSCOPEINTERN, "CTxtEdit::OnWordWrapChange");

	_pdp->SetWordWrap(fPropertyFlag);

	// Update was successful so we need the screen updated at some point
	_pdp->UpdateView();
	return S_OK;
}

/* 
 *	CTxtEdit::OnDisableDrag (fPropertyFlag)
 *
 *	@mfunc
 *		Notify text services that disable drag property changed
 *
 *	@rdesc
 *		S_OK - Notification successfully processed.
 */
HRESULT	CTxtEdit::OnDisableDrag(
	BOOL fPropertyFlag)	//@parm New state of property 
{
	TRACEBEGIN(TRCSUBSYSTS, TRCSCOPEINTERN, "CTxtEdit::OnDisableDrag");

	_fDisableDrag = fPropertyFlag;
	return S_OK;
}



/* 
 *	CTxtEdit::OnScrollChange (fPropertyFlag)
 *
 *	@mfunc
 *		Notify text services scroll property change
 *
 *	@rdesc
 *		S_OK - Notification successfully processed.
 */
HRESULT	CTxtEdit::OnScrollChange(
	BOOL fPropertyFlag)	//@parm New state of property 
{
	TRACEBEGIN(TRCSUBSYSTS, TRCSCOPEINTERN, "CTxtEdit::OnScrollChange");

	// Tell the display that scroll bars for sure need to be updated
	_pdp->SetViewChanged();

	// Tell the display to update itself.
	_pdp->UpdateView();

	return S_OK;
}