tclServiceMode

From tcltk v3.5.2 by R-core R-core@R-project.org

Allow Tcl events to be serviced or not

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

Keywords: misc

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.

Note that this blocks all Tcl/Tk activity, including for widgets from other packages. It may be better to manage mapping of windows individually.

Value

The value of the Tcl service mode before the call.

Examples

library(tcltk)

# NOT RUN {
## see demo(tkcanvas) for an example
# }
# NOT RUN {
oldmode <- tclServiceMode(FALSE)
# Do some work to create a nice picture.
# Nothing will be displayed until...
tclServiceMode(oldmode)
# }
# NOT RUN {
## another idea is to use tkwm.withdraw() ... tkwm.deiconify()
# }

Documentation reproduced from package tcltk, version 3.5.2, License: Part of R 3.5.2

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