HMGetBalloonWindow
window record
WindowPtr * window; a pointer to the current help balloon's window record
window record of the currently displayed help balloon in the window
parameter.
window the window record of the currently displayed help balloon. If a help function returns NIL in the window parameter.
noErr (0) No error
memFullErr (-108) Not enough room in heap zone
created; likewise, NIL is returned for balloons created with the
specified as the method parameter.