scrollbar question

jbv at jbv at
Fri Feb 19 12:49:50 EST 2021

Hi lust,

How can I prevent the thumb of a scrollbar to move when user
clicks on the scrollbar, but not on the thumb, when it's set
as a slider ?
I tried to trap scrollbarLineDec and scrollbarLineInc, and
also to set the lineincrement to 0, but to no avail.
What am I missing ?
Thanks in advance.


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