---
name: "gk_schedule"
section: "3gk"
platform: "linux"
package: "groupkit"
version: "3.2-1"
release: "Debian 1.3 (Bo)"
platforms: ["linux"]
url: "https://new.carta.tech/gk_schedule"
---

# gk\_schedule(3gk)

support periodic execution of commands

## NAME

gk\_schedule, gk\_cancelScheduled -  support periodic execution of commands

## SYNOPSIS

- **gk\_schedule** *tag command ?timer?*

  - **gk\_cancelScheduled** *tag*

  ## DESCRIPTION

These commands allow you to deal with executing repetitive commands (such as move object messages) so that commands do not cause a backlog.  Commands (such as an update) are added to a queue without duplicates, so only a single command will be executed within a given time interval (default 1/10 second).

This facility provides a convenient front end to Tk's after command, while avoiding queueing up multiple redundant messages.

## COMMANDS

- **gk\_schedule** *tag command ?timer?*

  Schedule **command** to be executed sometime in the future. If there is already a command with the same **tag**, do not add this command to the queue.  By default, commands will be queued up to execute in 100 milliseconds, but this can be changed using the **timer** parameter.

- **gk\_cancelScheduled** *tag*

  Cancel a previously scheduled command, identified by **tag**, if it has not already been run.

## AUTHOR

Mark Roseman (roseman@cpsc.ucalgary.ca)