Converting Screen Distances
If you prefer to use inches for
screen distance but you want to print out pixels, you can use the
pixels method to convert any valid screen distance
string into a pixel value; for example:
$pixels = $widget->pixels("2i"); # What is 2 inches in pixels?
$pixels = $widget->pixels("2m"); # What is 2 millimeters in pixels?
The pixelsmethod rounds to the nearest whole pixel. You can get a
fractional pixel result by using fpixels:
$pixels = $widget->fpixels("2i"); # What is 2 inches in pixels?
$pixels = $widget->fpixels("2m"); # What is 2 millimeters in pixels?Get Mastering Perl/Tk now with the O’Reilly learning platform.
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