2.2.9.1.2.1.4 Fast-Path Pointer Position Update (TS_FP_POINTERPOSATTRIBUTE)
The TS_FP_POINTERPOSATTRIBUTE structure is the fast-path variant of the TS_POINTERPOSATTRIBUTE structure (section 2.2.9.1.1.4.2).
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updateHeader |
compressionFlags (optional) |
size |
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pointerPositionUpdateData |
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updateHeader (1 byte): The format of this field is the same as the updateHeader byte field specified in the Fast-Path Update (section 2.2.9.1.2.1) structure. The updateCode bitfield (4 bits in size) MUST be set to FASTPATH_UPDATETYPE_PTR_POSITION (8).
compressionFlags (1 byte): An 8-bit, unsigned integer. The format of this optional field (as well as the possible values) is the same as the compressionFlags field specified in the Fast-Path Update structure.
size (2 bytes): A 16-bit, unsigned integer. The format of this field (as well as the possible values) is the same as the size field specified in the Fast-Path Update structure.
pointerPositionUpdateData (4 bytes): Pointer coordinates. Both slow-path and fast-path utilize the same data format, a Pointer Position Update (section 2.2.9.1.1.4.2) structure, to represent this information.