def controlChanged(self, info):
# Check that the control that changed has the name were looking for:
if info["name"] == self.controlName:
# If there's a glyph window open
w = CurrentGlyphWindow()
if w:
# Set the zoom scale of the window.
# Scale the incoming "value" of the control to somewhere between 0.15% and 3000%
scale = (info["value"] * 30) + 0.15
w.setGlyphViewScale(scale)
