|
ReadHWL
- 0
Reads a word list from a file.
int ReadHWL( HWL hwl, HFILE hfile )
Parameters
hwl
A handle to an empty word list.
hfile
A handle to a file previously opened for reading.
Return Value
Returns HRCR_OK if successful; otherwise, returns one of the following
negative values:
Constant
| Description
| HRCR_ERROR
| Invalid parameter or file or other error.
| HRCR_MEMERR
| Insufficient memory.
|
Comments
The words are expected as ANSI text, one word per line, followed by a carriage
return and linefeed. In this context, a word can represent a phrase and
contain spaces or other noncharacters, such as "New York" and "ne'er-do-well." Empty
lines or lines containing only spaces or tabs are allowed but ignored.
The file that hfile refers to must already exist and be open for reading.
The hwl parameter must be the handle of an empty word list created by CreateHWL. If the word list is not empty, ReadHWL returns HRCR_ERROR.
Once the file is read, it can be closed immediately.
Example
The following example demonstrates how to provide a word list to constrain
recognition results to the words contained in the fictitious file COUNTRY.LST:
HWL hwlCountries = CreateHWL( NULL, NULL, WLT_EMPTY, 0L );
OFSTRUCT ofStruct;
HFILE hfile = OpenFile( "country.lst", &ofStruct, OF_READ );
if (hfile != HFILE_ERROR)
{
ReadHWL(hwlCountries, hfile);
_lclose(hfile);
}
else
ErrorMsg(FILEOPEN);
.
.
.
if (hrc = CreateCompatibleHRC( NULL, NULL ))
{
SetWordlistHRC( hrc, hwlCountries ); // Set list into HRC
SetWordlistCoercionHRC( hrc, SCH_FORCE ); // Force match
.
. // Code that collects and recognizes input here
.
}
See Also
CreateHWL, WriteHWL
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