Pointer to a WORD of logical device flags.
Flag bits 0 and 2 apply to the presentation driver and are set ON or OFF,
as appropriate, by the presentation driver. All other flags are reserved
for system use and must not be modified.
Bit 0
Set ON if each device context for this presentation
driver requires its own physical device block. Even if the presentation
driver sets this bit off, the FillPhysicalDeviceBlock subfunction can still
be called more than once (although no work may need to be done after FillPhysicalDeviceBlock
is called the first time).
Bit 2
Set
ON if the szDeviceName and pszDriverName fields of a DevOpenDC call for
this device are ignored. Setting Bit 2 ON indicates that the presentation
driver supports only one physical device in one configuration, for example,
the display driver. Hardcopy drivers do not set this bit unless the hardcopy
driver supports only one physical device in one configuration.
Bit
7
This is a new bit in OS/2 2.1, Graphics Engine
Version 0x202 or later. Setting Bit 7 ON indicates that the presentation
driver may update the dispatch table in FillPhysicalDeviceBlock. Do this
if your driver supports more than one type of device and you want to hook
different functions based on the device type.
A
pointer to the presentation driver's copy of the dispatch table. This table
is an array of 32-bit pointers to system-default function- handling routines.
The low-order byte of a function number identifies the offset to the relevant
pointer.