Standard Keyboard and Mouse Mapping

Keyboard and mouse mappings are specified with instances of the toolbox class wx:keymap%. Each instance of mred:edit% contains a private keymap that is intialized by the following:

• (mred:set-keymap-implied-shifts keymap) -- This configures the keymap with information about keys that are accessed by using the shift key on the current keyboard. For example, ``?'' is accessed with the shift key on most keyboards. This information is used when keyboard mappings are specified. For example, if ``?'' is configured as an implied-shift key and if the unshifted key for ``?'' is ``/'', then the key string ``c:?'' actually matches the keyboard combination Control-Shift-/. The list of implied-shift keys installed by mred:set-keymap-implied-shifts is in the global variable mred:shifted-key-list .
• (mred:set-keymap-error-handler keymap) -- This installs an error handler for the keymap that calls the Scheme error procedure.
• (send keymap chain-to-keymap mred:global-keymap #f) -- This installs the global keymap mred:global-keymap to handle keyboard and mouse mappings not handled by keymap. The global keymap is created at system start-up time and initialized by (mred:setup-global-keymap mred:global-keymap).

For information about key combination specifications, the implies-shift method, and the keymap error handler, see the documentation for wx:keymap% class.

Most keyboard and mouse mappings are inserted into a keymap by calling the keymap's map-function method. However, ``meta'' combinations require special attention. The ``m:'' prefix recognized by map-function applies only to the Meta key that exists on some keyboards. By convention, however, ``meta'' combinations can also be accessed by using ``ESC'' or ``c:['' as a prefix. Further, it may be useful to use a different modifier key for ``meta'' on platforms without a Meta key. Therefore, the procedure mred:send-map-function-meta is used to generalize meta combinations. This procedure takes a keymap, a base key specification, and a function name; it prefixes the base key with all ``meta'' combination prefixes, and installs the new combinations into the keymap. For example, (mred:send-map-function-meta keymap "a" func) might map all of ``m:a'', ``ESC;a'', and ``c:[;a'' to func. All of the prefixes used for ``meta'' are in the global list mred:meta-prefix-list.

The global keymap contains the following functions (in addition to the functions built into buffers (see the wx:keymap% class documentation.):

• ``ring-bell'' (any events) -- Rings the bell (using wx:bell) and removes the search panel from the frame, if there.
• ``save-file'' (key events) -- Saves the buffer. If the buffer has no name, then mred:put-file is invoked.
• ``save-file-as'' (key events) -- Calls mred:put-file to save the buffer.
• ``load-file'' (key events) -- Invokes mred:open-file.
• ``find-string'' (key events) -- Opens the search buffer at the bottom of the frame, unless it is already open, in which case it searches for the text in the search buffer.
• ``find-string-reverse'' (key events) -- Same a ``find-string'', but in the reverse direction.
• ``find-string-replace'' (key events) -- Opens a replace string dialog box.
• ``toggle-anchor'' (key events) -- Turns selection-anchoring on or off.
• ``center-view-on-line'' (key events) -- Centers the buffer in its display using the currently selected line.
• ``collapse-space'' (key events) -- Collapses all non-return whitespace around the caret into a single space.
• ``remove-space'' (key events) -- Removes all non-return whitespace around the caret.
• ``collapse-newline'' (key events) -- Collapses all empty lines around the caret into a single empty line. If there is only one empty line, it is removed.
• ``open-line'' (key events) -- Inserts a new line.
• ``transpose-chars'' (key events) -- Transposes the characters before and after the caret and moves forward one position.
• ``transpose-words'' (key events) -- Transposes words before and after the caret and moves forward one word.
• ``capitalize-word'' (key events) -- Changes the first character of the next word to a capital letter and moves to the end of the word.
• ``upcase-word'' (key events) -- Changes all characters of the next word to capital letters and moves to the end of the word.
• ``downcase-word'' (key events) -- Changes all characters of the next word to lowercase letters and moves to the end of the word.
• ``kill-word'' (key events) -- Kills the next word.
• ``backward-kill-word'' (key events) -- Kills the previous word.
• ``goto-line'' (any events) -- Queries the user for a line number and moves the caret there.
• ``goto-position'' (any events) -- Queries the user for a position number and moves the caret there.
• ``copy-clipboard'' (mouse events) -- Copies the current selection to the clipboard.
• ``cut-clipboard'' (mouse events) -- Cuts the current selection to the clipboard.
• ``paste-clipboard'' (mouse events) -- Patses the clipboard to the current selection.
• ``copy-click-region'' (mouse events) -- Copies the region between the caret and the input mouse event.
• ``cut-click-region'' (mouse events) -- Cuts the region between the caret and the input mouse event.
• ``paste-click-region'' (mouse events) -- Pastes the clipboard into the position of the input mouse event.
• ``select-click-word'' (mouse events) -- Selects the word under the input mouse event.
• ``select-click-line'' (mouse events) -- Selects the line under the input mouse event.
• ``start-macro'' (key events) - Starts building a keyboard macro
• ``end-macro'' (key events) -- Stops building a keyboard macro
• ``do-macro'' (key events) -- Executes the last keyboard macro
• ``toggle-overwrite'' (key events) -- Toggles overwriting mode

These functions are bound to the following keys (C = control, S = shift, A = alt, M = ``meta'', D = command):

• C-g : ``ring-bell''
• M-C-g : ``ring-bell''
• C-c C-g : ``ring-bell''
• C-x C-g : ``ring-bell''
• C-p : ``previous-line''
• S-C-p : ``select-previous-line''
• C-n : ``next-line''
• S-C-n : ``select-next-line''
• C-e : ``end-of-line''
• S-C-e : ``select-to-end-of-line''
• D-RIGHT : ``end-of-line''
• S-D-RIGHT : ``select-to-end-of-line''
• M-RIGHT : ``end-of-line''
• S-M-RIGHT : ``select-to-end-of-line''
• C-a : ``beginning-of-line''
• S-C-a : ``select-to-beginning-of-line''
• D-LEFT : ``beginning-of-line''
• D-S-LEFT : ``select-to-beginning-of-line''
• M-LEFT : ``beginning-of-line''
• M-S-LEFT : ``select-to-beginning-of-line''
• C-h : ``delete-previous-character''
• C-d : ``delete-next-character''
• C-f : ``forward-character''
• S-C-f : ``select-forward-character''
• C-b : ``backward-character''
• S-C-b : ``select-backward-character''
• M-f : ``forward-word''
• S-M-f : ``select-forward-word''
• A-RIGHT : ``forward-word''
• A-S-RIGHT : ``forward-select-word''
• M-b : ``backward-word''
• S-M-b : ``select-backward-word''
• A-LEFT : ``backward-word''
• A-S-LEFT : ``backward-select-word''
• M-d : ``kill-word''
• M-DELETE : ``backward-kill-word''
• M-c : ``capitalize-word''
• M-u : ``upcase-word''
• M-l : ``downcase-word''
• M-< : ``beginning-of-file''
• S-M-< : ``select-to-beginning-of-file''
• M-> : ``end-of-file''
• S-M-> : ``select-to-end-of-file''
• C-v : ``next-page''
• S-C-v : ``select-next-page''
• M-v : ``previous-page''
• S-M-v : ``select-previous-page''
• C-l : ``center-view-on-line''
• C-k : ``delete-to-end-of-line''
• C-y : ``paste-clipboard'' (Except Windows)
• A-v : ``paste-clipboard''
• D-v : ``paste-clipboard''
• C-_ : ``undo''
• C-x u : ``undo''
• C-+ : ``redo''
• C-w : ``cut-clipboard''
• M-w : ``copy-clipboard''
• C-x C-s : ``save-file''
• C-x C-w : ``save-file-as''
• C-x C-f : ``load-file''
• C-s : ``find-string''
• C-r : ``find-string-reverse''
• M-% : ``find-string-replace''
• SPACE : ``collapse-space''
• M- : ``remove-space''
• C-x C-o : ``collapse-newline''
• C-o : ``open-line''
• C-t : ``transpose-chars''
• M-t : ``transpose-words''
• C-SPACE : ``toggle-anchor''
• M-g : ``goto-line''
• M-p : ``goto-position''
• LEFTBUTTONTRIPLE : ``select-click-line''
• LEFTBUTTONDOUBLE : ``select-click-word''
• RIGHTBUTTON : ``copy-click-region''
• RIGHTBUTTONDOUBLE : ``cut-click-region''
• MIDDLEBUTTON : ``paste-click-region''
• C-RIGHTBUTTON : ``copy-clipboard''
• INSERT : ``toggle-overwrite''
• M-o : ``toggle-overwrite''

• Scheme Mode Keyboard Mapping
• Scheme Interaction Mode Keyboard Mapping