See the CAPI User Guide and Reference Manual for more details of these, unless directed otherwise. This section is not relevant to LispWorks for Mobile Runtime.
The new function capi:redisplay-element can be used to force part of an capi:output-pane to be redisplayed. It's first argument can be an capi:output-pane or a capi:pinboard-object and it is equivalent to calling gp:invalidate-rectangle, except that it can be called from any thread.
The classes capi:list-panel and capi:multi-column-list-panel now support visible separators between rows or columns by the new :separators initarg, with value nil (the default), :both, t, :horizontal or :vertical.
The class capi:multi-column-list-panel supports reorderable columns on GTK by the new initarg :reorderable-columns and the :reorderable keyword in the column specification. Reorderable columns can be reordered by dragging their header.
The class capi:multi-column-list-panel has a new initarg :x-adjust, which provides the default value of the :adjust keyword in the column specifications. Its value must be a list of the same length as the :columns initarg.
To specify the initial selection in capi:prompt-with-list, you can supply the keyword arguments :selection, :selected-item or :selected-items. These keywords were present in previous releases but not documented.
The class capi:menu now supports display of both images and text on Microsoft Windows, like it did in previous releases for GTK+ and Cocoa.
The class capi:interface has new initargs :color-mode and :color-mode-callback and accessors capi:top-level-interface-color-mode and capi:top-level-interface-color-mode-callback to support dark themes and application-defined changes based on the theme.
The new function capi:top-level-interface-dark-mode-p can be used to detect when an interface is using a dark themes.
The function capi:set-editor-parenthesis-colors now has a keyword argument :dark-background-colors, which is a list of colors to use for parentheses when the background is dark.
The default colors used by the class capi:stacked-tree change when a dark theme is used. If specify colors or color-function, then you may need to take special action.
The class capi:rich-text-pane has a new initarg :link-callback, which is a function to be called if the text contains a hyperlink and the user click on it. This is only implemented on Windows.
The class capi:list-panel has a new initarg :filter-added-filters, which adds additional filters that apply to the items of the panel.
The class capi:filtering-layout has a new initarg :added-filters that does the same thing.
The function capi:filtering-layout-match-object-and-exclude-p returns an extra value, which is a list of the added filters that have been selected by the user.
The callbacks in the input-model of a capi:output-pane are called with the coordinates of the pointer. In previous releases, the coordinates that are passed to callbacks of characters and keys did not take into account scrolling on some platforms. On the other hand, callbacks associated with mouse events (button clicks and motion) always took scrolling into account. In LispWorks 8.0, the coordinates that are passed to callbacks of characters and keys always take into account of scrolling the same way as mouse event callbacks.
That means that, by default (when :pane-can-scroll is nil in an capi:output-pane), the coordinates that the callbacks get when the pointer is on some graphic element match the coordinates that were used to draw the element (assuming there is no graphics transform).
The coordinates that the function capi:current-pointer-position returns when called with a capi:output-pane now take account of scrolling on all platforms. In previous releases, some platforms did not take account of scrolling.
The class capi:output-pane has a new initarg :scroll-bar-type that allows you to force the scroll bars to be visible on macOS regardless of the setting in the System Preferences.
Release Notes and Installation Guide - 01 Dec 2021 19:38:49