- 0 2.0
Adds a set of data points to the pen data object.
HPENDATA AddPointsPenData( HPENDATA hpendata, LPPOINT lppt, LPVOID lpvOem, LPSTROKEINFO lpsiNew )
Handle to a pen data object.
Address of an array of POINT
structures containing new data points to be added to the pen data. Zero
points can be added to force a change of pen state or to set a new pen state.
OEM data. Can be set to NULL if there is no additional OEM data. The pen data
header determines how the OEM data is interpreted.
Address of a STROKEINFO
structure for new stroke data. Contains the count of points from lppt
to be added.
Returns a handle to the pen data object. Normally, this is the same handle
originally passed to the function. NULL is returned on error. The size of hpendata
is limited to 64K.
A call to GetPenHwEventData
gets the lpsiNew
values. A subsequent call to AddPointsPenData
appends the set of points to the HPENDATA
memory block identified by hpendata
. The lpsiNew
argument points to a STROKEINFO
structure that describes the new points, and lpvOem
points to the corresponding OEM data (if any) to be added along with the
structure indicates the pen state of the new points
that is, whether the pen is up or down. To avoid unnecessarily creating new
strokes in the HPENDATA
compares the pen state of the new points with the pen state of the last
stroke in the HPENDATA
block. If the new points have the same pen state as the last stroke, the
function appends the points to the last stroke and updates the last STROKEINFO
structure within the HPENDATA
block. If the new points have a different pen state, AddPointsPenData
appends them to the HPENDATA
block as a new stroke, along with the STROKEINFO
structure pointed to by lpsiNew
does not scale the data points. The calling application must ensure that the
added data points have the same scale as the rest of the HPENDATA
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