Copyright ©1995 by NeXT Computer, Inc. All Rights Reserved.
|Adopted By:||The event system|
|Display drivers use the messages in the IOScreenRegistration protocol to register and unregister themselves with the event system. These methods are called by IODisplay in response to an getIntValues:forParameter:count: call that specifies the "IO_Framebuffer_Register" parameter.
You shouldn't need to invoke the methods in this protocol, because they're already invoked automatically by IOFrameBufferDisplay and IOSVGADisplay.
|Registers instance as a display driver. Returns a token that's used to refer to the display in other calls to the event system.|
|Unregisters the instance associated with token as a display driver.|