3.23  key-event%

Superclass: event%

A key-event% object contains information about a key press or release event. Key events are primarily processed by on-subwindow-char in window<%> and on-char in canvas<%>.

For a key-press event, a virtual key code is provided by get-key-code. For a key-release event, get-key-code reports 'release, and a virtual key code is provided by get-key-release-code.

See also Mouse and Keyboard Events.

• (instantiate key-event% () [(key-code _)] [(shift-down _)] [(control-down _)] [(meta-down _)] [(alt-down _)] [(x _)] [(y _)] [(time-stamp _)]) -> key-event% object
     key-code = #\nul : character or symbol
     shift-down = #f : boolean
     control-down = #f : boolean
     meta-down = #f : boolean
     alt-down = #f : boolean
     x = 0 : exact integer
     y = 0 : exact integer
     time-stamp = 0 : exact integer

  See the corresponding get- and set- methods for information about key-code, shift-down, control-down, meta-down, alt-down, x, y, and time-stamp.

  The release key code, as returned by get-key-release-code, is initialized to 'press.

  
  

Methods
    get-alt-down
    get-control-down
    get-key-code
    get-key-release-code
    get-meta-down
    get-shift-down
    get-x
    get-y
    set-alt-down
    set-control-down
    set-key-code
    set-key-release-code
    set-meta-down
    set-shift-down
    set-x
    set-y

All Methods
    get-alt-down from key-event%
    get-control-down from key-event%
    get-key-code from key-event%
    get-key-release-code from key-event%
    get-meta-down from key-event%
    get-shift-down from key-event%
    get-time-stamp from event%
    get-x from key-event%
    get-y from key-event%
    set-alt-down from key-event%
    set-control-down from key-event%
    set-key-code from key-event%
    set-key-release-code from key-event%
    set-meta-down from key-event%
    set-shift-down from key-event%
    set-time-stamp from event%
    set-x from key-event%
    set-y from key-event%