I have as much experience as Jeff. If you search “quickbooks” here you will find this question asked before.
https://clarionhub.com/search?q=quickbooks
I know I have seen @noyantis showing their interface using Chilkat. It is mentioned on the below topic.
Andy has a weekly ClarionLive webinar that I know I have see QB demonstrated. You can connect and ask him to show it. It may have been shown at CIDC Africa in his “Noyantis Full Throttle” session that is free on the CIDC Sessions page.