    deferred class
    	EV_PIXEL_BUFFER_I

    General
    	cluster: implementation_mswin
    	description: "Implementation interface for EV_PIXEL_BUFFER."
    	keywords: "drawable, primitives, figures, buffer, bitmap, picture"

    Ancestors
    	EV_ANY_I*

    Queries
    	get_pixel (a_x, a_y: NATURAL_32): NATURAL_32
    	height: INTEGER_32
    	is_locked: BOOLEAN
    	pixel_iterator: EV_PIXEL_BUFFER_ITERATOR
    	sub_pixel_buffer (a_rect: EV_RECTANGLE): EV_PIXEL_BUFFER
    	sub_pixmap (a_rect: EV_RECTANGLE): EV_PIXMAP
    	width: INTEGER_32

    Commands
    	lock
    	make_with_size (a_width, a_height: INTEGER_32)
    	set_pixel (a_x, a_y, rgba: NATURAL_32)
    	set_with_named_file (a_file_name: STRING_8)
    	unlock