The generic function interface-keys-style
returns a keyword indicating a keys style, or emulation. It is called when
interface
starts running in a new process, and
keys-style
determines how user input is interpreted by output panes (including editor-pane) in
interface
.
The editor (that is, instances of editor-pane and its subclasses) responds to user input gestures according to one of three basic models.
When
keys-style
is :emacs
, the editor emulates GNU Emacs. This value is allowed on all platforms.
When
keys-style
is :pc
, the editor emulates standard Microsoft Windows keys on Windows, and KDE/Gnome keys on GTK+ and Motif. This value is allowed in the Windows, GTK+ and X11/Motif implementations.
When
keys-style
is :mac
, the editor emulates Mac OS X editor keys. This value is allowed only in the Mac OS X Cocoa implementation.
The most important differences between the styles are in the handling of the Alt
key on Microsoft Windows, selected text, and accelerators:
Alt
is interpreted on Microsoft Windows as the Meta key (used to access many Emacs commands).
The modifier :meta
is used in an output-pane
input-model
gesture specification.
Control characters such as Ctrl+S
are not interpreted as accelerators.
The selection is not deleted on input.
Alt
is interpreted as Alt
on Microsoft Windows and can be used for shortcuts.
The modifier :meta
is not used in an output-pane
input-model
gesture specification.
Control
keystrokes are interpreted as accelerators. Standard accelerators are added for standard menu commands, for example Ctrl+S
for
File > Save
. For the full set of standard accelerators see Standard default accelerators.
The selection is deleted on input, and movement keys behave like a typical Microsoft Windows or KDE/Gnome editor.
Emacs Control
keys are available, since they do not clash with the Macintosh Command
key.
The selection is deleted on input, and movement keys behave like a typical Mac OS X editor.
By default
keys-style
is :pc
on Microsoft Windows platforms and :emacs
on Linux/AIX/Solaris and Mac OS X platforms. You can supply methods for interface-keys-style
on your own interface classes that override the default methods.
In the Cocoa implementation, Command
keystrokes such as Command+X
are available if there is a suitable
Edit
menu, regardless of the Editor emulation.
See the chapter "Emulation" in the LispWorks Editor User Guide for more detail about the different styles.
On Motif the code to implement accelerators and mnemonics clashes with the LispWorks meta key support. Therefore the keyboard must be configured so that none of the keysyms connected to mod1 (see xmodmap) are listed in the variable capi-motif-library:*meta-keysym-search-list*
, which must be also be non-nil. Note also that Motif requires Alt to be on mod1.
CAPI User Guide and Reference Manual (Windows version) - 3 Aug 2017