; window.h

; interface description for objects in the window class
; note, there may be many instances of this class

; window objects conform to the interface in display.h
; users of window.h must use display.h as well

	EXT	WININIT
PWININIT:
	W	WININIT
			; initializer
			; given R3 = pointer to new window object
			;       R4 = pointer to an existing screen object
			;       R5 = x coordinate of upper left corner
			;       R6 = y coordinate of upper left corner
			;       R7 = width
			;       R8 = height
			; returns R3 = pointer to window object
			; does not use (or restores) R9-15

	EXT	WINTAB
PWINTAB:
	W	WINTAB
			; object descriptor (method table)

; note:  the initializer expects the caller to allocate
; space for the new window object before calling WININIT.
; Window objects require word-aligned objects of size WINSIZE.
; They may be allocated however the user wishes, for example
; in a COMMON block or as local variables.

; the size given here is a bit oversize.  Given any particular
; window implementation, it can be set optimally, 

WINSIZE	=	40