spinbox entry bindings

From: Chris vK (cvonkoss_at_yahoo.com.au)
Date: 02/01/05 

Date: 1 Feb 2005 04:07:16 -0800

--My spinbox seems out of sync with my entry box ??
--I need to <ButtonRelease-1> twice to get the entry box to change
values, but then appears out of sync.

--I have an array of satellites and their longitude, in satlong.

array set satlong {\
sat1 long1 \
sat2 long2 \
}

--I get a list of satellite names from this array ...

foreach {sat long} [array get satlong] {
    lappend satlist $sat
}

--I then use the list of sat names for values of my spinbox...

spinbox .sat -values $satlist -font {-size 12} -wrap 1 -state readonly
-textvariable sat

--Then, I try to bind the spinbox selected value to an entry box
textvariable...

bind .sat <ButtonRelease-1> { set satellitelong $satlong($sat) }

--Entry box where users can manualy enter values, into textvariable
satellitelong...

entry .satlong -font {-size 12} -width 10 -validate key \
-vcmd {expr {[string is double %P] && [string length %P]<7}} \
-textvariable satellitelong

--I also bind the entry box to another proc, wich works fine...

bind .satlong <Return> { calculate } 

--
--Can anyone suggest how I need to bind the spinbox to the entry box
so that it will be in sync ??
--Bind actions, <Leave> and <Motion> both work, but not when you click
the spinbox up / down arrow buttons ??
--

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