# R: Allow Tcl events to be serviced or not

tclServiceMode {tcltk} | R Documentation

## Allow Tcl events to be serviced or not

### Description

This function controls or reports on the Tcl service mode, i.e. whether Tcl will respond to events.

### Usage

    tclServiceMode(on = NULL)

### Arguments

`on` | (logical) Whether event servicing is turned on.

### Details

If called with `on == NULL` (the default), no change is made.

### Value

The value of the Tcl service mode before the call.

### Examples

    ## Not run:

        oldmode <- tclServiceMode(FALSE)
        # Do some work to create a nice picture.  Nothing will be displayed until...
        tclServiceMode(oldmode)
    ## End(Not run)

[Package tcltk version 2.6.0 Index]