This function is EXPERIMENTAL. The behaviour of this function, the name of this function, and anything else documented about this function may change without notice in a future release of PHP. Use this function at your own risk.
Adds the given
shape to the button.
An SWFShape instance
flags are valid:
SWFBUTTON_HIT isn't ever displayed, it defines the hit region for the button. That is, everywhere the hit shape would be drawn is considered a "touchable" part of the button.