'''`[http://tcl.tk/man/tcl/TkCmd/tkwait.htm%|%tkwait]`''', a built-in [Tk] [command], runs the [event loop] while waiting for something to happen (as described by its arguments).



** See Also **

   `[update considered harmful]`:   On the hazards of entering the event loop.

   [vwait]:   Similar to `tkwait variable`.



** Synopsis **


    :   '''[tkwait variable]''' ''name''

    :   '''[tkwait visibility]''' ''name''

    :   '''[tkwait window]''' ''name''



** Description **

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



** Global Scoping **

Another reminder to read the man page carefully: "If the first argument is variable (or any abbreviation of it) then the second argument is the name of a global variable and the command waits for that variable to be modified."



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