Finally, he happily observed, his books remained best sellers and his new vodka line was selling well.
I should also mention that I have happily cashed Time Warner checks.
She has been happily unmarried to her partner Steve Janowitz since the mid-1980s.
Of software, used to emphasise that a program is unaware of some important fact about its environment, either because it has been fooled into believing a lie, or because it doesn't care. The sense of "happy" here is not that of elation, but rather that of blissful ignorance. "The program continues to run, happily unaware that its output is going to /dev/null."