Ctrl-B to Insert Headline Time

@language python

def insertHdlTime():
    tree = c.frame.tree
    qwidg,lwidg = tree.editLabel(c.p)
    # qwidg is a QLineEdit
    # lwidg is a leoQtHeadlineWidget

    idx = qwidg.cursorPosition()
    g.es(idx, color='green')
    hdlBase = p.h
    pre = hdlBase[:idx]
    post = hdlBase[idx:]
    time = c.getTime(body=False)
    p.h = ''.join([pre, time, post])

insertHdlTime()