A wizard is an interactive help utility that guides the user through a potentially complex task, such as configuring a PPP driver to work with a new modem. Wizards are often implemented as a sequence of dialog boxes which the user can move forwards and backwards through, filling in the details required. The implication is that the expertise of a human wizard in one of the above senses is encapsulated in the software wizard, allowing the average user to perform expertly.
MJ For a very basic wizard which leaves the creation of the separate pages up to you but will provide the navigation, the following can serve as a start:
package require Tk
# requires 8.5 because of use of {*}
package require Tcl 8.5
proc wizard {toplevel pages} {
toplevel $toplevel
set page_list {}
for {set i 1} {$i <= $pages} {incr i} {
set finish {}
set page $toplevel.p$i
frame $page
frame $page.page
lappend page_list $page.page
button $page.p -text Previous... -command [list move $page.page -1]
button $page.n -text Next... -command [list move $page.page 1]
if {$i == 1} {
$page.p configure -state disabled
}
if {$i == $pages} {
$page.n configure -state disabled
button $page.f -text Finish -command $toplevel.finish
set finish $page.f
}
grid $page.page -columnspan 4 -sticky nsew
grid $page.p $page.n {*}$finish
grid columnconfigure $page 3 -weight 1
grid rowconfigure $page 0 -weight 1
}
return $page_list
}
proc move {page {offset 0}} {
set page [winfo parent $page]
regexp {^(.*\.p)([0-9]+)$} $page -> root number
pack forget $page
set newnumber [expr {$number + $offset}]
set newpage "$root$newnumber"
pack $newpage -fill both -expand 1
wm title [winfo toplevel $newpage] "Page $newnumber"
}
set pages [wizard .wzrd 10]
# finish button will call <toplevel>.finish
proc .wzrd.finish {args} {
# wzrd is finished
puts "finished"
destroy .wzrd
}
# set up pages
# every page returned by [wizard ...] is a frame where you can construct your page
foreach page $pages {
text $page.t
pack $page.t -fill both -expand 1
}
# show the first page
move [lindex $pages 0]
wm withdraw .
catch {console show}