2.2.2.2 Fast-Path Orders Update (TS_FP_UPDATE_ORDERS)
The TS_FP_UPDATE_ORDERS structure contains primary, secondary, and alternate secondary drawing orders aligned on byte boundaries. This structure conforms to the layout of a Fast-Path Update (see [MS-RDPBCGR] section 2.2.9.1.2.1) and is encapsulated within a Fast-Path Update PDU (see [MS-RDPBCGR] section 2.2.9.1.2.1.1).
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updateHeader |
compressionFlags (optional) |
size |
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numberOrders |
orderData (variable) |
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updateHeader (1 byte): An 8-bit, unsigned integer. The format of this field is the same as the updateHeader byte field described in the Fast-Path Update structure (see [MS-RDPBCGR] section 2.2.9.1.2.1). The updateCode bitfield (4 bits in size) MUST be set to FASTPATH_UPDATETYPE_ORDERS (0x0).
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 described in the Fast-Path Update structure specified in [MS-RDPBCGR] section 2.2.9.1.2.1.
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 described in the Fast-Path Update structure specified in [MS-RDPBCGR] section 2.2.9.1.2.1.
numberOrders (2 bytes): A 16-bit, unsigned integer. The number of Drawing Order (section 2.2.2.1.1) structures contained in the orderData field.
orderData (variable): A variable-sized array of Drawing Order (section 2.2.2.1.1) structures packed on byte boundaries. Each structure contains a primary, secondary, or alternate secondary drawing order. The controlFlags field of the Drawing Order identifies the type of drawing order.