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.
(logical) Whether event servicing is turned on.
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.
The value of the Tcl service mode before the call.
1 2 3 4 5 6 7 8 9