Is the attention light lit?

 

To find out if the attention light is on, you can use the GetAttentionLight API (use the uppercase and lowercase shown).

There are no restrictions to the use of this command.

This API returns the following information:

Bytes 0 and 1 Bytes 2 and 3 Bytes 4 through 4+N
16-bit return code

0 = Command successful

1 = Command unsuccessful

16-bit additional data length N

N = size of ASCII return value (does not count end of string NULL)

True or False

 

Parent topic:

APIs that check the system status