2.2.3.7 Window Region Update PDU (OD_WND_REGION_UPDATE)
The Window Region Update PDU (OD_WND_REGION_UPDATE) MAY<5> be used by the sharing manager to inform the participants that the size of an application window has changed (section 3.2.5.1.6).
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HDR (4 bytes): The common PDU header (as specified in Common Order Header (section 2.2.1)). The Type field of the common PDU header MUST be set to ODTYPE_WND_REGION_UPDATE (0x000C).
left (4 bytes): A 32-bit, unsigned integer. The leftmost bound of the rectangle specifying the application window.
top (4 bytes): A 32-bit, unsigned integer. The upper bound of the rectangle specifying the application window.
right (4 bytes): A 32-bit, unsigned integer. The inclusive rightmost bound of the rectangle specifying the application window.
bottom (4 bytes): A 32-bit, unsigned integer. The inclusive lower bound of the rectangle specifying the application window.