Expose more parameters of a check button.

[OrlanRod]

There appears to be no way in reducing the height of the check button to be at size of the font's height. There is some kind of invisible padding added that can't be edited by the user. I Imagine it is for the font to sit in the middle, but that's not what i want. I want it to be aligned mono spaced. I made the check icon images the same size, but still the invisible padding remains.