Bounding Box
The method
bbox
returns a list of four elements that
describes the bounding box around the text at
index
:
($x, $y, $w, $h) = $lb->bbox(index
);
The four elements are (in order): x
,
y
, w
, and h
.
x
and y
are the (x, y)
coordinates at the upper-lefthand corner of the bounding box. The
w
is the width of the text in pixels. The
h
is the height of the text in pixels. These
measurements, relative to the Listbox, are shown in Figure 7-6.
Figure 7-6. Bounding box values around text
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