How a Recognizer Works

Version information has been changed in the first paragraph.

The Pen API specifies the following functions for initializing, modifying, and closing down the recognizer. Note that, in version 2.0 of the Pen API, the required function ConfigRecognizer handles all initialization and configuration tasks. The other initialization functions are obsolete in version 2.0 and should only be included in a recognizer if it is expected to work with older applications that work with a version 1.x recognizer (see the Microsoft Pen Windows, version 1.x documentation for descriptions of these functions).

Note that the table following the first paragraph should refer to version 1.x rather than 1.0.

  • In the "HRCRESULT Section," note that the GetAlternateWordsHRCRESULT function is not supported.

  • In the "Training" section, note the version changes in the following paragraph and in the table it introduces.

The following table lists the functions that a recognizer with training capabilities can export. Only TrainHREC is used by version 2.0 Pen API. The other functions are obsolete in version 2.0 and should be included in a recognizer only if it is expected to work with older applications that work with a version 1.x recognizer (see the Microsoft Pen Windows, version 1.x documentation for descriptions of these functions).

  • In the "Processing Raw Data" section of the "Interpreting Input" section, note the additional .DLL in the first sentence of the second paragraph.

The Microsoft Handwriting Recognizer (GRECO.DLL or RODAN.DLL) processes only coordinate data.

  • In the section "Segmentation of Symbols," following Figure 8.1, the final sentence has been changed.

The Pen API places few restrictions on the recognizer. At a minimum, however, a default recognizer that supports free (unboxed) input must be able to recognize discrete characters because many applications do not use boxed input.

  • In the "Results Messages" section of the "Returning Results" section, note the version change in the second bulleted item.

  • In the section "The RCRESULT Structure" in the "Returning Results" section, the note should refer to version 1.x, not 1.0. Also in this section, the "Location and Position of the Input" section, the final sentence in the first bulleted item has been changed.

The Microsoft Handwriting Recognizer (GRECO.DLL or RODAN.DLL) sets nBaseLine to 0.

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