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Where are the TSF Samples?

Many people have emailed me asking about the TSF samples on MSDN.  They’re supposed to be on MSDN code gallery, although they don’t appear to be there. They are, however, part of the Windows SDK . After installation, you'll find them in %programfiles%\Microsoft Read More...
Posted Wednesday, October 22, 2008 1:57 PM by Eric Brown | 1 Comments

Categories

In an earlier post on keyboards , I talked briefly about text service categories.  I'd like to talk more about categories. TSF will make sure that at most one text service in any category is enabled at any given time. So, for example, you can enable Read More...
Posted Friday, March 14, 2008 7:00 AM by Eric Brown | 0 Comments
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ITfCompartmentEventSink::OnChange means what it says...

I got caught by this recently. ITfCompartmentEventSink::OnChange means what it says. If you repeatedly store the same value into a global compartment, the event sinks will not fire. If you store a different value into the compartment, the event sinks Read More...
Posted Monday, November 05, 2007 7:00 AM by Eric Brown | 0 Comments
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Compartment Values

I've been working with compartments recently, and I've run across a few 'features' that tripped me up. I figure if I've run across them, others have too. Although MSDN says that you can put integers, BSTRs, and interface pointers into a compartment, you Read More...
Posted Friday, November 02, 2007 7:00 AM by Eric Brown | 1 Comments
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What to do when you push a key

I received an interesting email the other day asking about how to get the character code from the parameters passed to the ITfKeyEventSink::OnKeyDown method. The answer is that most keyboard related text services only work with a particular keyboard layout, Read More...
Posted Friday, October 05, 2007 7:00 AM by Eric Brown | 0 Comments
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Generating Candidates from a Text Service

So how do you create the candidates from within the text service? Well, the first thing you need is the original input, and you need to know what text was created from the original input. Almost all text services (there might be a few that don't do this) Read More...
Posted Tuesday, May 29, 2007 7:00 AM by Eric Brown | 0 Comments
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Generating Candidates from an Application

Kirby left a comment to my post on candidates asking when a text service should create an ITfCandidateList. The answer is that when the text service wants to show candidates (via a preserved key or other mechanism), it should show its modal UI, and quite Read More...
Posted Friday, May 25, 2007 11:43 AM by Eric Brown | 0 Comments

Text services: Vista Extensions (UI Elements)

The TSF tour ends here, with a brief discussion of UI Elements in Vista If your text service wishes to be available in full-screen applications like games, it must implement ITfUIElement , and call the ITfUIElementMgr whenever the text service wants to Read More...
Posted Wednesday, May 16, 2007 7:00 AM by Eric Brown | 0 Comments
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Text Services: Vista Extensions

In Windows Vista, TSF added the ability to run in locations where it had previously been disabled. For example, TSF is now available on secure desktops, in full screen (DirectX) applications, and in MTA threads. However, text services have to be aware Read More...
Posted Tuesday, May 15, 2007 7:00 AM by Eric Brown | 0 Comments
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Text Services: Candidates

If your text service supports multiple interpretations of the same input, and you wish to allow users to correct the initial interpretation (for dictation, we call this 'correction'; IMEs tend to call it 'reconversion'), your text service will need to Read More...
Posted Monday, May 14, 2007 7:00 AM by Eric Brown | 6 Comments
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Text Services: Function Providers

TSF allows text services to offer optional extension points through the ITfFunctionProvider interface. Indirection through the function provider allows text services to minimize memory usage and startup time by instantiating services when requested, rather Read More...
Posted Friday, May 11, 2007 7:00 AM by Eric Brown | 0 Comments
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Text Services: Language Bar

If your text service wishes to display some UI on the language bar, then your service will need to create objects that implement one (or more) of the following interfaces: Interface How Obtained ITfLangBarItem Pass this base interface to ITfLangBarItemMgr::AddItem Read More...
Posted Thursday, May 10, 2007 7:00 AM by Eric Brown | 1 Comments
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Text Service: Display Attributes

If your text service wishes to display text in different colors (e.g., displaying the current composition in red), then your text service needs to implement these interfaces: Interface How Obtained ITfDisplayAttributeProvider Obtained by QI from ITfTextInputProcessor Read More...
Posted Wednesday, May 09, 2007 7:00 AM by Eric Brown | 1 Comments
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Text Service Properties

The next thing that I'd like to talk about are properties. While the TSF manager implements basic property handling (via ITfProperty), a text service has the ability to customize the way TSF handles properties. If your text service wishes to attach private Read More...
Posted Tuesday, May 08, 2007 7:00 AM by Eric Brown | 0 Comments
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Text Service Basics

We have finally finished looking at the interfaces that TSF implements for you. Now we start looking at the interfaces that text services must implement. The first step are the essential interfaces. Every text service must implement these two interfaces. Read More...
Posted Monday, May 07, 2007 7:00 AM by Eric Brown | 0 Comments
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