TestDeviceAttribute

TestDeviceAttribute Check whether or not an attribute is set

#include <Quickdraw.h> Graphics Devices

GDHandle curDevice ; Handle to a GDevice record structure

short attribute ; gdDevType, ramInit, mainScreen,

allInit, screenDevice, noDriver,

screenActive

returns Is this a monitor, is it set?

TestDeviceAttribute returns an indication as to what kind of gDevice you

have and whether or not it is set.

curDevice is the handle that leads to the device being tested in the gDevice

record.

attribute is one of seven graphics device characteristics that can be on or off.

Returns: a Boolean value indicating the status of a particular

attribute It is one of:

FALSE Not set

TRUE Attribute set

Notes: Scanning through a device list, TestDeviceAttribute tells you if your

device is a display and if it's active. It does not necessarily tell if the

monitor is turned on, or if there is a monitor attached to the card.

Referenced by (7):