The TS_GRAPHICS_UPDATE structure is used to describe the type and encapsulate the data for a slow-path graphics update sent from server to client. All slow-path graphic updates conform to this basic structure (see sections 2.2.9.1.1.3.1.1 to 2.2.9.1.1.3.1.4).
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shareDataHeader
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...
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...
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...
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...
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updateType
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updateData (variable)
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shareDataHeader (18 bytes):
Share Data Header (section
2.2.8.1.1.1.2
) containing information about the packet. The type subfield of the pduType field of the Share Control Header (section 2.2.8.1.1.1.1) MUST be set to PDUTYPE_DATAPDU (7). The pduType2 field of the Share Data Header MUST be set to PDUTYPE2_UPDATE (2).
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updateType (2 bytes): A 16-bit, unsigned integer. Type of the graphics update.
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Value
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Meaning
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UPDATETYPE_ORDERS
0x0000
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Indicates an Orders Update (see [MS-RDPEGDI] section 2.2.2.2).
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UPDATETYPE_BITMAP
0x0001
|
Indicates a Bitmap Graphics Update (see section 2.2.9.1.1.3.1.2).
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UPDATETYPE_PALETTE
0x0002
|
Indicates a Palette Update (see section 2.2.9.1.1.3.1.1).
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UPDATETYPE_SYNCHRONIZE
0x0003
|
Indicates a Synchronize Update (see section 2.2.9.1.1.3.1.3).
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UPDATETYPE_SURFCMDS
0x0004
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Indicates a Surface Command Update (see section 2.2.9.1.1.3.1.4).
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updateData (variable): Variable-length data specific to the graphics update.