IInkRecognizerContext::get_PrefixText method (msinkaut.h)

Article
07/27/2022

Gets or sets the characters that come before the InkStrokes collection in the InkRecognizerContext object.

This property is read/write.

Syntax

HRESULT get_PrefixText(
  BSTR *Prefix
);

Parameters

Prefix

Return value

None

Remarks

The prefix helps improve recognition results by supplying the recognizer with more context about the handwriting.

Setting the PrefixText property succeeds only if the Strokes property is NULL. You must set the PrefixText property before you attach a InkStrokes collection to the Strokes property of the InkRecognizerContext, or you must set the Strokes property to NULL and then set the PrefixText property.

Note If you use the latter method, you may need to reattach the InkStrokes collection to the Strokes property of the InkRecognizerContext object.

Setting the PrefixText property to NULL removes any prefix text from the recognizer context.

The prefix text is ignored unless you have set both the IRM_Coerce and IRM_WordModeInkRecognitionModes flags in the RecognitionFlags property.

The SuffixText property gets or sets the characters that come after the InkStrokes collection in the InkRecognizerContext object and also helps improve the recognition result.

If your application provides a correction interface when converting ink to text, the application may allow the user to select characters within a word and use the stylus to generate replacement characters. Your application can use the PrefixText and SuffixText properties to improve recognition of the new ink.

Requirements

Requirement	Value
Minimum supported client	Windows XP Tablet PC Edition [desktop apps only]
Minimum supported server	None supported
Target Platform	Windows
Header	msinkaut.h
Library	InkObj.dll