Tk::Adjuster(3) perl/Tk Documentation Tk::Adjuster(3)NAME
Tk::Adjuster, packAdjust - Allow size of packed widgets to
be adjusted by user
SYNOPSIS
use Tk;
use Tk::Adjuster;
$widget->packAdjust([pack options]);
DESCRIPTION
packAdjust calls pack on the widget and then creates an
instance of Tk::Adjuster and packs that "after" the
widget. Tk::Adjust is a Frame containing a "line" and a
blob.
Dragging either with Mouse Button-1 results in a line
being dragged to indicate new size. Releasing Button
submits GeometryRequests on behalf of the widget which
will cause the packer to change widget's size.
If Drag is done with Shift button down, then
GeometryRequests are made in "real time" so that text-flow
effects can be seen, but as a lot more work is done
behaviour may be sluggish.
If widget is packed with -side => left or -side => right
then width is adjusted. If packed -side => top or -side =>
bottom then height is adjusted.
packPropagate is turned off for the master window to
prevent adjustment changing overall window size. Similarly
packPropagate is turned off for the managed widget if it
has things packed inside it. This is so that the
GeometryRequests that Tk::Adjuster are not overriden by
pack.
NOTES
The 'line' which is used to feedback position is in fact a
'Menu' widget set to an unorthodox shape, and with a black
background.
BUGS
If the size of adjustable widget is increased to the limit
there is no longer room for the Tk::Ajuster widget. As a
work-round it forcibly makes room for itself if it is
unmapped. However the "grab" it held will have been lost
and button-motion events may be sent to other widgets
which are not expecting them, which can result in error
messages.
25/Aug/1997 Tk400.202 1
Tk::Adjuster(3) perl/Tk Documentation Tk::Adjuster(3)25/Aug/1997 Tk400.202 2
