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digitalmars.D.learn - Blog Post #0047: ScaleButton and VolumeButton

There are a couple of things to watch out for with the 
ScaleButton and its offspring, the VolumeButton. Read all about 
it here:
https://gtkdcoding.com/2019/06/25/0047-scalebutton-and-volumebutton.html
Jun 25 2019