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TrainHREC
- 0
Passes ink and its symbol interpretation to the recognizer for training.
int TrainHREC( HREC hrec, LPSYV lpsyv, UINT cSyv, HPENDATA hpndt, UINT uConflict )
Parameters
hrec
Module handle of the recognizer library. If this value is NULL, the system
default recognizer is used.
lpsyv
Address of an array of symbols to train.
cSyv
Count of symbols in lpsyv. This must be greater than 0.
hpndt
Handle to an HPENDATA object.
uConflict
One of the following TH_ values that specify how to handle training conflicts:
Constant
| Description
| TH_QUERY
| Query the user if the proposed training conflicts with symbols in the database.
| TH_FORCE
| Perform the training without querying the user, even if there is a conflict
with the database.
| TH_SUGGEST
| Abandon the training if there is any conflict with the database and return an
error (HRCR_CONFLICT).
|
Return Value
Returns HRCR_OK if training is successful; otherwise, returns one of the
following negative values:
Constant
| Description
| HRCR_ERROR
| Invalid parameter or other error.
| HRCR_CONFLICT
| TH_SUGGEST was specified but there was a conflict with the database. No
training was done.
| HRCR_INVALIDPNDT
| Invalid HPENDATA object.
| HRCR_MEMERR
| Insufficient memory.
| HRCR_UNSUPPORTED
| The recognizer does not support this function.
|
Comments
Typically, an application calls TrainHREC to train a single symbol. In other words, lpsyv points to a single symbol that is followed by an SYV_NULL terminator.
However, multiple symbols for example, those representing the character string "ng"may also be trainable, depending on the recognizer.
If uConflict is TH_QUERY, the recognizer is free to prompt the user with a dialog box to
resolve training conflicts. If it is TH_FORCE, the training is performed
regardless of conflicts and the original conflicting data may be lost. TH_SUGGEST
trains the recognizer only if there are no conflicts; otherwise, the call fails and
returns HRCR_CONFLICT.
If the user picks a meaning for some ink from a list of alternatives, such as
in a boxed edit control, the application can elect to train the recognizer with
this information. In this case, either TH_FORCE or TH_SUGGEST is a suitable
value for uConflict.
Training gestures depends on the recognizer. The Microsoft Handwriting
Recognizer (GRECO.DLL) does not support training for gestures.
See Also
CreateCompatibleHREC
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