[][][][][][][][][][][][][][][][][][][][][][][][][][][][][][]

                     _name-message.ss_

[][][][][][][][][][][][][][][][][][][][][][][][][][][][][][]


The _name-message%_ class is derived from canvas%. It
overrides the on-paint and on-event methods to draw the name
of a file and handle clicks to popup a menu for choosing a
directory.

> (send a-name-message set-message file-name? msg)

  file-name? : boolean
  msg : string

If file-name? is #t, msg is treated like a pathname and
clicks on the name message objects popup a menu that opens a
get-file dialog.

If file-name is #f, msg is treated as a regular
string. Clicking on the name message pops up a dialog saying
that there is no file name until the file is saved.
      
> (send a-name-message on-choose-directory dir)

  dir : string

This method is called when one of the popup menu items is
chosen. The argument is a string representing the specified
directory.

============================================================

> (calc-button-min-sizes dc string) 

Calculates the minimum width and height of a button label
(when drawn with draw-button-label). Returns two values: the
width and height.

============================================================

> (draw-frame-button-label dc label width height inverted)

Draws a button label like the one for the (define ...) and
filename buttons in the top-left corner of the DrScheme

frame. Use this function to draw similar buttons. The basic
idea is to create a canvas object whose on-paint method is
overridden to call this function.  The dc should be canvas's
dc object, the label should be the string to display on the
button.  The width and height arguments should be the width
and height of the button and inverted? should be #t when the
button is being depressed.

See calc-button-min-sizes for help calculating the min sizes
of the button.



[][][][][][][][][][][][][][][][][][][][][][][][][][][][][][]

                     _plot.ss_

[][][][][][][][][][][][][][][][][][][][][][][][][][][][][][]

plot.ss provides a simple tool for plotting data values to a 
device context.


Two structures are provided:
===========================================================
> (struct data-set ((points (listof (is-a?/c point%)))
		    (connected? any?)
		    (pen (is-a?/c pen%))
		    (min-x number?)
		    (max-x number?)   
		    (min-y number?)   
		    (max-y number?)))

points: the list of data values.
connected: determines whether the points are connected by a line or not.
pen: the pen% to draw the points/lines with.
min-x, max-x, min-y, max-y: indicate the window coordinates that the
data should be drawn in.

===========================================================

> (struct plot-setup ((axis-label-font (is-a?/c font%))
		      (axis-number-font (is-a?/c font%))
		      (axis-pen (is-a?/c pen%))
		      (grid? any?)
		      (grid-pen (is-a?/c pen%))
		      (x-axis-marking (listof number?))
		      (y-axis-marking (listof number?))
		      (x-axis-label string?)
		      (y-axis-label string?)))

axis-label-font: the font% the axis-labels is drawn with.
axis-number-font: the font% the numbering on the axes is
drawn with.
axis-pen: the pen% the axis is drawn with.
grid?: whether a grid should be drawn in at each axis marking.
grid-pen: the pen% to draw the grid with.
x-axis-marking: where marks should be placed on the x-axis.
y-axis-marking: where marks should be placed on the y-axis.
x-axis-label-string: the x-axis label.
y-axis-label-string: the y-axis label.

===========================================================

One function is provided:
===========================================================
> (plot (is-a?/c dc<%>) (listof data-set?) plot-setup?)

Draws the data-sets on the dc<%> configured by the setup.
Uses window coordinates that will accommodate all of the
data sets.

[][][][][][][][][][][][][][][][][][][][][][][][][][][][][][]

                  _include-bitmap.ss_

[][][][][][][][][][][][][][][][][][][][][][][][][][][][][][]

The include-bitmap.ss library provides a `include-bitmap form that
takes a filename containing a bitmap and "inlines" the bitmap into the
program. The advantage of "inlining" the bitmap is that a stand-alone
executable can be created that contains the bitmap and does not refer
to the original image file.

> (include-bitmap file-spec)                               SYNTAX
> (include-bitmap file-spec type-expr)                     SYNTAX

The `file-spec' is the same as for MzLib's `include': a path string, a
`build-path' form, or a `lib' form. The `type-expr' should produce
'unknown, 'unknown/mask, etc., and the default is 'unknown/mask.

> (include-bitmap/relative-to source file-spec)            SYNTAX
> (include-bitmap/relative-to source file-spec type-expr)  SYNTAX

Analogous to `include-at/relative-to', though only a source is needed
(no context).