2.2.7.71 MILCMD_GDISPRITEBITMAP_UNMAPSECTION
The MILCMD_GDISPRITEBITMAP_UNMAPSECTION packet notifies the client that the sprite object referenced by this sprite resource will not be modified any further. After sending this packet, the server MUST NOT emit any further packets that modify the sprite object referenced by this sprite resource.
The client MAY ignore this message. If the client does not ignore this message, it MUST NOT release the sprite object when this notification message is received. It can, however, can use this information for performance optimizations, such as storage optimizations that are advantageous only when the sprite is static.
This situation can arise, for example, if the server implements visual animations for a closing window. During the closing animation, the server can stop sending graphical updates to the window's sprite.
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messageSize (4 bytes): A 32-bit unsigned integer. The size of this message in bytes. The value of this field MUST be set to 0x0000000C.
controlCode (4 bytes): A 32-bit unsigned integer containing the control code for this message. The value of this field MUST be equal to 0x0000005A.
targetResource (4 bytes): A 32-bit unsigned integer. The value of this field MUST be set to a valid resource handle referencing a resource of type TYPE_GDISPRITEBITMAP. This handle identifies the resource that is the target for this message.