2.2.2.4.10 Update Orders

The Update Orders packet contains one or more update orders.

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updateType																padding
cOrders																sendBPP
data (variable)
...

updateType (2 bytes): One of the following values, which indicate the type of update orders that are contained in the structure.

Value	Meaning
UPD_ORDERS 0x0000	The packet can contain one or more of the orders that are defined in the Order Type enumeration. Possible values for the Order Type enumeration are defined in section 2.2.2.4.10.1.20.
UPD_SCREEN_DATA 0x0001	Contains an UpdateBitmapPDU order that updates a region of the screen.
UPD_PALETTE 0x0002	Contains an UpdatePalettePDU order that describes the palette of UpdateBitmapPDU orders.
UPD_SYNC 0x0003	Contains an UpdateSynchronizePDU order that resets the state of the connection.

If this field is set to 0x0000, this packet can contain any of the following orders:

Name	Description
ArcOrder	Contains an arc.
CacheBitmapOrder	Contains a bitmap to be cached.
CacheColorTableOrder	Contains a color table to be cached.
ChordOrder	Contains a chord.
DesktopScroll	Contains a desktop scroll.
DstBlt	Contains a raster transfer of a rectangle.
EllipseOrder	Contains an ellipse.
ExtTextOrder	Contains a string to be displayed and positions for the individual characters.
LineOrder	Contains a line.
MemBlt	Contains a transfer from the bitmap cache to the screen.
Mem3Blt	Contains a transfer from the bitmap cache to the screen through a brush.
OpaqueRect	Contains an opaque rectangle.
PatBlt	Contains a brush paint.
PieOrder	Contains a pie wedge.
PolyBezierOrder	Contains one or more Bezier curves.
PolygonOrder	Contains a polygon.
RectangleOrder	Contains a rectangle.
RoundRectOrder	Contains a rectangle that has rounded corners.
SaveBitmap	Contains a region of the screen that the receiver SHOULD save or restore.
ScreenBlt	Contains a bit-block transfer between regions of the screen.
TextOrder	Contains a string.

padding (2 bytes): Reserved. MUST be set to zero when sent and MUST be ignored on receipt.

cOrders (2 bytes): The number of orders that are contained in data.

sendBPP (2 bytes): The bits per pixel that are in use by the sending application-sharing session node.

data (variable): An array of orders that are appropriate to the value of updateType.