A subcommand of Tk's winfo command.
Returns a list containing the path names of all the children of window. Top-level windows are returned as children of their logical parents. The list is in stacking order, with the lowest window first, except for Top-level windows which are not returned in stacking order. Use the wm stackorder command to query the stacking order of Top-level windows.
To get a list of all windows in a widget heirarchy, you can use a proc like this:
proc wlist {{W .}} {
set list [list $W]
foreach w [winfo children $W] {
set list [concat $list [wlist $w]]
}
return $list
}