one scrollbar for two listboxes? 
Author Message
 one scrollbar for two listboxes?


> Hi,

> I want to create two listboxes with different content where each line
> belongs together (like in the example A-1, B-2 ..)
> So I want the scrollbar to scroll both listboxes simultaneous. Unfortunately
> it only scrolls the listbox which is the last in the command (.b) When I use
> MouseButton 2 in every list they manipulate the scrollbar as expected.
> Please, could you correct my example, that it does the expected scrolling?

Tonight I wrote some code that does this.

proc dual {args} \
#Let's see what we have.
puts $args
        if {[llength $args] == 2} \
        .f.l1 yview moveto [lindex $args 1]
        .f.l2 yview moveto [lindex $args 1]

        if {[llength $args] == 3} \
        .f.l1 yview scroll [lindex $args 1] units
        .f.l2 yview scroll [lindex $args 1] units

#Why doesn't this work?
#.f.l1 yview $args
#.f.l2 yview $args


pack [frame .f]
pack [listbox .f.l1 -yscrollcommand {.f.s set}] -side left
pack [listbox .f.l2 -yscrollcommand {.f.s set}] -side left
pack [scrollbar .f.s -command {dual}] -side right -fill y

for {set i 0} {$i < 30} {incr i 1} \
.f.l1 insert end $i
.f.l2 insert end $i

> ---

> cIao
> Mat

George Peter Staplin
http://www.*-*-*.com/ ~georgeps/

Sun, 19 Jan 2003 03:00:00 GMT  
 one scrollbar for two listboxes?
> Tonight I wrote some code that does this.

thanks alot


Mon, 20 Jan 2003 03:00:00 GMT  
 [ 2 post ] 

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