GrafDevice
short theDevice ; device-specific code; 0= screen
GrafDevice is used in communications between Quickdraw and the Font Manager. It sets device-specific information that affects the way characters
are drawn.
theDevice is a device specific value. It is broken into 2 bytes as follows:
high byte device driver reference number (always negative)
low byte device-dependent modifier code
Notes: This stores theDevice into the device field of the current GrafPort. You will not use this function in normal applications.