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tkwait(n)		     Tk	Built-In Commands		     tkwait(n)

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NAME
       tkwait -	Wait for variable to change or window to be destroyed

SYNOPSIS
       tkwait variable name

       tkwait visibility name

       tkwait window name
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DESCRIPTION
       The  tkwait  command waits for one of several things to happen, then it
       returns without taking any other	actions.  The return value  is	always
       an  empty  string.  If the first	argument is variable (or any abbrevia-
       tion of it) then	the second argument is the name	of a  global  variable
       and  the	 command waits for that	variable to be modified.  If the first
       argument	is visibility (or any abbreviation of it) then the second  ar-
       gument  is  the	name  of  a  window and	the tkwait command waits for a
       change in its visibility	state (as indicated by the arrival of a	 Visi-
       bilityNotify  event).  This form	is typically used to wait for a	newly-
       created window to appear	on the screen before taking some  action.   If
       the  first argument is window (or any abbreviation of it) then the sec-
       ond argument is the name	of a window and	the tkwait command  waits  for
       that window to be destroyed.  This form is typically used to wait for a
       user to finish interacting with a dialog	box before using the result of
       that interaction.

       While  the  tkwait command is waiting it	processes events in the	normal
       fashion,	so the application will	continue to respond to	user  interac-
       tions.	If  an	event handler invokes tkwait again, the	nested call to
       tkwait must complete before the outer call can complete.

SEE ALSO
       bind(n),	vwait(n)

KEYWORDS
       variable, visibility, wait, window

Tk								     tkwait(n)

NAME | SYNOPSIS | DESCRIPTION | SEE ALSO | KEYWORDS

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