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GetStrokeTableAttributes
2.0
Retrieves information about a stroke's class from the table in the PENDATAHEADER of an HPENDATA object.
int GetStrokeTableAttributes( HPENDATA hpndt, UINT iTblEntry, LPVOID lpvBuffer, UINT uOption )
Parameters
hpndt
Handle to the HPENDATA object, which must not be compressed.
iTblEntry
Zero-based table index to the class entry in the pen data header.
lpvBuffer
Pointer to a structure whose type depends on uOption, or NULL if the uOption parameter does not require this buffer.
uOption
Specifies the attributes to retrieve. This parameter can be one of the
following:
Constant
| Description
| GSA_PENTIPTABLE
| Retrieve the pen-tip characteristics (color, width, nib) of the class of
strokes specified by iTblEntry. lpvBuffer is a pointer to a PENTIP structure. Return value is the number of strokes using this class.
| GSA_SIZETABLE
| Retrieve the number of entries in the stroke class table. iTblEntry and lpvBuffer are unused and ignored. Return value is the number of classes used in the
stroke class table.
| GSA_USERTABLE
| Retrieve the user value, if any, of the class of strokes specified by iTblEntry. lpvBuffer is a pointer to a doubleword value, or NULL. The number of bytes that are
valid in lpvBuffer depends on flags set in CreatePenDataEx. This number is returned by the function, and can be 0 (no user value), 1
(byte value),
2 (word value), or 4 (doubleword value). Return value
is 4, because the user value in the stroke class table
is a doubleword value.
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Return Value
Returns an integer if successful, depending on the value of uOption, as described above. If an error occurs, returns one of the following:
Constant
| Description
| PDR_COMPRESSED
| Pen data is compressed.
| PDR_ERROR
| Parameter or other unspecified error.
| PDR_MEMERR
| Memory error.
| PDR_PNDTERR
| Invalid pen data.
| PDR_VERSIONERR
| Could not convert old pen data.
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See Also
CreatePenDataEx, GetStrokeAttributes, SetStrokeAttributes, SetStrokeTableAttributes, PENTIP
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