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TCL(Tool Command Language) Scripting

BWidget::ScrolledWindow: Scrolling more than 1648 elements


Hello,

running TclTk8.4 with BWidget 1.7 on Linux machines we found a problem
displaying many items in a ScrollableFrame:

ScrolledWindow .sw
ScrollableFrame .sw.f
.sw setwidget .sw.f
set MyFrame [.sw.f getframe]
for { set i 0 } { $i < 2000 } { incr i } {
     pack [label $MyFrame.l$i -text "\# $i"] -side top

}

pack .sw

Everything looks ok at the first view. But i'm not able to scroll below
label # 1648.  The scrollbar is scaled correctly but the content only
scrolls down to 1648.

Seen before or better solved before?

--
Mit sonnigen Gren,

Ingo Reise

            __o
            \<,
_________()/()_____________________________________________________
Ingo Reise

Hi,

The problem is caused by the canvas widget which is used inside the
ScrollableFrame. Canvas coordinates are in the range -32k..+32k. The
labels in your example are packed in a frame (MyFrame). This frame is
put at coordinates 0 0 inside the canvas. Checking the size required
by the frame can be done with the followong command (tested with
BWidget 1.7):

% .sw.f:cmd bbox 1
0 46 40000

This does not fit in the canvas.

Jos.

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