► |  | GUI: Racket Graphics Toolkit

1 | Overview
2 | Reference
3 | Configuration
4 | Dynamic Loading
| Bibliography
| Index

► | 2 | Reference

2.1 | Windowing Classes
2.2 | Windowing Functions
2.3 | Drawing Classes
2.4 | Drawing Functions
2.5 | Editor Classes
2.6 | Editor Functions
2.7 | WXME Decoding

▼ | 2.1 | Windowing Classes

2.1.1 | area<%>
2.1.2 | area-container<%>
2.1.3 | area-container-window<%>
2.1.4 | button%
2.1.5 | canvas<%>
2.1.6 | canvas%
2.1.7 | check-box%
2.1.8 | checkable-menu-item%
2.1.9 | choice%
2.1.10 | clipboard-client%
2.1.11 | clipboard<%>
2.1.12 | combo-field%
2.1.13 | control<%>
2.1.14 | control-event%
2.1.15 | cursor%
2.1.16 | dialog%
2.1.17 | event%
2.1.18 | frame%
2.1.19 | gauge%
2.1.20 | group-box-panel%
2.1.21 | grow-box-spacer-pane%
2.1.22 | horizontal-pane%
2.1.23 | horizontal-panel%
2.1.24 | key-event%
2.1.25 | labelled-menu-item<%>
2.1.26 | list-box%
2.1.27 | list-control<%>
2.1.28 | menu%
2.1.29 | menu-bar%
2.1.30 | menu-item<%>
2.1.31 | menu-item%
2.1.32 | menu-item-container<%>
2.1.33 | message%
2.1.34 | mouse-event%
2.1.35 | pane%
2.1.36 | panel%
2.1.37 | popup-menu%
2.1.38 | radio-box%
2.1.39 | selectable-menu-item<%>
2.1.40 | separator-menu-item%
2.1.41 | scroll-event%
2.1.42 | slider%
2.1.43 | subarea<%>
2.1.44 | subwindow<%>
2.1.45 | tab-panel%
2.1.46 | text-field%
2.1.47 | timer%
2.1.48 | top-level-window<%>
2.1.49 | vertical-pane%
2.1.50 | vertical-panel%
2.1.51 | window<%>

On this page:

get-event-type
set-event-type

Inherited methods:
from event%
get-time-stamp
set-time-stamp

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control-event% : class?
superclass: event%

A control-event% object contains information about a control event. An instance of control-event% is always provided to a control or menu item callback procedure.

( new control-event% |  | [event-type event-type] |
| [ | [time-stamp time-stamp]]) |

→ ( is-a?/c control-event% )

event-type

:

( one-of/c 'button 'check-box 'choice
'list-box 'list-box-dclick 'text-field
'text-field-enter 'slider 'radio-box
'menu-popdown 'menu-popdown-none 'tab-panel)

time-stamp : exact-integer? = 0

The event-type argument is one of the following:

- 'button – for button% clicks

- 'check-box – for check-box% toggles

- 'choice – for choice% item selections

- 'list-box – for list-box% selections and deselections

- 'list-box-dclick – for list-box% double-clicks

- 'text-field – for text-field% changes

- 'text-field-enter – for single-line text-field% Enter event

- 'menu – for selectable-menu-item<%> callbacks

- 'slider – for slider% changes

- 'radio-box – for radio-box% selection changes

- 'menu-popdown – for popup-menu% callbacks (item selected)

- 'menu-popdown-none – for popup-menu% callbacks (no item selected)

- 'tab-panel – for tab-panel% tab changes

This value is extracted out of a control-event% object with the get-event-type method.

See get-time-stamp for information about time-stamp.

( send a-control-event get-event-type )

→

( one-of/c 'button 'check-box 'choice
'list-box 'list-box-dclick 'text-field
'text-field-enter 'slider 'radio-box
'menu-popdown 'menu-popdown-none 'tab-panel)

Returns the type of the control event. See control-event% for information about each event type symbol.

( send a-control-event set-event-type type) → void?

type

:

( one-of/c 'button 'check-box 'choice
'list-box 'list-box-dclick 'text-field
'text-field-enter 'slider 'radio-box
'menu-popdown 'menu-popdown-none 'tab-panel)

Sets the type of the event. See control-event% for information about each event type symbol.
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