Command Codes

Macros
#define	DISPLAY_CMD_TRANSPORT_CLOSE   0
	Command used by Display_control() to release its transport layer. More...
#define	DISPLAY_CMD_TRANSPORT_OPEN   1
	Command used by Display_control() to resume control of its transport. More...

Detailed Description

DISPLAY_CMD* macros are general command codes for Display_control(). Not all Display driver implementations support these command codes.

Macro Definition Documentation

DISPLAY_CMD_TRANSPORT_CLOSE

#define DISPLAY_CMD_TRANSPORT_CLOSE   0

Command used by Display_control() to release its transport layer.

This command will cause Display implementations that are using a potentially shared transport mechanism to close the open handle.

Methods requiring this transport will meanwhile be discarded.

With this command arg is don't care.

DISPLAY_CMD_TRANSPORT_OPEN

#define DISPLAY_CMD_TRANSPORT_OPEN   1

Command used by Display_control() to resume control of its transport.

This command will cause Display implementations that are using a potentially shared transport mechanism to (re-)open the closed handle.

With this command arg is don't care.