tk/after

Preface
Introduction
Tutorial
Implementation
Commands
- bitmap
- eval-wish
- get-tk-var
- photo
- set-tk-var!
- tk
- tk-id->widget
- tk-var
- tk/after
  - cancel
  - info
- tk/appname
- tk/bind
- tk/bindtags
- tk/caret
- tk/choosecolor
- tk/choosedirectory
- tk/clipboard
- tk/console
- tk/destroy
- tk/dialog
- tk/event
- tk/focus
- tk/getopenfile
- tk/getsavefile
- tk/grab
- tk/grid
- tk/image
- tk/lower
- tk/messagebox
- tk/option
- tk/pack
- tk/place
- tk/popup
- tk/raise
- tk/scaling
- tk/update
- tk/useinputmethods
- tk/wait
- tk/windowingsystem
- tk/winfo
- tk/wm
Options
Extensions
Changes

This command is used to delay execution of the program or to execute a command in background sometime in the future. It has several forms, depending on the first argument to the command:

(tk/after ms): Ms must be an integer giving a time in milliseconds. The command sleeps for ms milliseconds and then returns. While the command is sleeping the application does not respond to events.
(tk/after ms (lambda () ... ) ?(lambda () ... ) ...?): In this form the command returns immediately, but it arranges for a lambda expression to be executed ms milliseconds later as an event handler. The command will be executed exactly once, at the given time.

The after command returns an identifier that can be used to cancel the delayed command using after cancel.

Note that the command (tk/after idle) is not supported. It will crash your application.

Corresponding Tcl/Tk command:

after ...


		tk/after
		tk/after

	Preface Introduction Tutorial Implementation Commands bitmap eval-wish get-tk-var photo set-tk-var! tk tk-id->widget tk-var tk/after cancel info tk/appname tk/bind tk/bindtags tk/caret tk/choosecolor tk/choosedirectory tk/clipboard tk/console tk/destroy tk/dialog tk/event tk/focus tk/getopenfile tk/getsavefile tk/grab tk/grid tk/image tk/lower tk/messagebox tk/option tk/pack tk/place tk/popup tk/raise tk/scaling tk/update tk/useinputmethods tk/wait tk/windowingsystem tk/winfo tk/wm Options Extensions Changes	This command is used to delay execution of the program or to execute a command in background sometime in the future. It has several forms, depending on the first argument to the command: (tk/after ms) Ms must be an integer giving a time in milliseconds. The command sleeps for `ms` milliseconds and then returns. While the command is sleeping the application does not respond to events. (tk/after ms (lambda () ... ) ?(lambda () ... ) ...?) In this form the command returns immediately, but it arranges for a lambda expression to be executed `ms` milliseconds later as an event handler. The command will be executed exactly once, at the given time. The after command returns an identifier that can be used to cancel the delayed command using after cancel. Note that the command `(tk/after idle)` is not supported. It will crash your application. Corresponding Tcl/Tk command: after ... © Author \| Home \| Sitemap