0x0013 - Display Device

Properties of the display adapter. If several adapters are installed, there is an instance for each one.

Table 0x8nn2 is a list of all available display modes, while the current display mode is shown in table 0x8nn1.

0x8nn0 – Module Header

SubIndex	Type	Name	Value	Type	Access
00	VAR	Len		UNSIGNED16	read-only
01	VAR	Address	0x0013 00nn	UNSIGNED32	read-only
02	VAR	Type	Display Device	VISIBLE STRING	read-only
03	VAR	Name	Device Name	VISIBLE STRING	read-only
04	VAR	Dev type	0x0013 2710	UNSIGNED32	read-only

0x8nn1 – Device settings

SubIndex	Type	Name	Type	Access
00	VAR	Len	UNSIGNED16	read-only
01	VAR	ID of active display mode	UNSIGNED8	read-write

0x8nn2 – Display modes

SubIndex	Type	Name	Type	Access
00	VAR	Len	UNSIGNED16	read-only
01 .. Len	VAR	Mode	VISIBLE STRING	read-only

0x8nn3 – Dim function ¹

SubIndex	Type	Name	Type	Access
00	VAR	Len	UNSIGNED16	read-only
01	VAR	IsPrimaryDisplay	BOOLEAN	read-only
02	VAR	Com Port ²	VISIBLE STRING	read-write
03	VAR	Version	UNSIGNED32	read-only
04	VAR	Brightness ³	UNSIGNED32	read-write
05	VAR	Light ⁴	BOOLEAN	read-write

¹Dim function Info
The dimming function is not supported by all devices. In Windows CE, the dimming function is only available for the primary monitor. "Com Port" must be set to the configured virtual com port, (e.g "COM4"). System requirements: Windows Embedded Standard (WES): MDP version 1.7 or higher
²Com Port Info
Windows Embedded Standard (WES): e.g. "Com4" Windows CE: under Windows CE, the Com Port must end with a colon, e.g. "COM4:"
³Brightness Info
Valid values: 20-100 (20 lowest brightness, 100 maximum brightness)
⁴Light Info
Valid values: TRUE = background light ON, FALSE = background light OFF

0xBnn0 – Identify Com Port (Service Transfer Object)⁵

InputData
Type	Name
UNSIGNED8	DummyByte

⁵Identify Com Port Info
Identification of the com port(s) is started by setting any value. If the call is successful, the field 0x8nn3 subindex 2 is set. If the call fails, an error code is issued. System requirements: Windows Embedded Standard (WES): MDP version 1.7 or higher Windows CE: not supported

⁵Identify Com Port Info

Identification of the com port(s) is started by setting any value. If the call is successful, the field 0x8nn3 subindex 2 is set. If the call fails, an error code is issued.

System requirements:
Windows Embedded Standard (WES): MDP version 1.7 or higher
Windows CE: not supported

0xBnn1 – Save brightness persistent

InputData
Type	Name
UNSIGNED8	DummyByte