macro is used for defining layouts and for creating new pinboard-object subclasses, by binding a set of variables to a pane's geometry.
The main uses of the macro
are defining layouts and for creating new pinboard-object subclasses.
binds the following variables across the forms in
to slots in the pane's geometry in much the same way as the Common Lisp macro
. Except the special cases which are mentioned below, these variables are read-only and should not be set.
Four variables define the geometry of the pane. If you define define your own calculate-layout method, it can set these variables:
An integer specifying the x position of the pane in pixels relative to its parent.
An integer specifying the y position of the pane in pixels relative to its parent.
An integer specifying the width in pixels of the pane.
An integer specifying the height in pixels of the pane.
Four variables specify constraints on the pane. If you define your own calculate-constraints method, it can set these variables:
A real number specifying the minimum width of the pane.
A real number specifying the minimum height of the pane.
A real number specifying the maximum width of the pane.
A real number specifying the maximum height of the pane.
The following variables are also bound but apply only to classes with internal scrolling, such as editor-pane. They can be retrieved by get-horizontal-scroll-parameters and get-vertical-scroll-parameters. They can be set by set-horizontal-scroll-parameters and set-vertical-scroll-parameters.
x coordinate of the current scroll position.
y coordinate of the current scroll position
The object whose geometry this is.
The same as
(kept for compatibility with LispWorks 3.1).
CAPI Reference Manual - 15 Dec 2011