actionscript 3 - TextField lowercase line -

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i need distance between baseline , lowercase line inside the scaled textfield, using actionscript 3. marked it's blue arrows here: enter image description here

does knows how value?

what looking called x-height. unfortunately, flash actionscript api not provide way of getting x-height typeface.

with tricky techniques, might able calculate x-height though. thinking might able create new textfield "x" in it, , draw bitmapdata. test pixels height.


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