I have opened a Feedback report with sysdiagnose archive file. The report number is FB16865567.

Pardon me, but the sysdiagnose archive file has a size of 377.6 MB. There is no way of me replying to the original DTS ticket with it.

Hello, I am afraid I find nothing to report to you under the Analytics Data list.

Thank you for your tips, Argun. There is no helpful documentation that comes with my cheap printer. So it's all on my own. I doubt that my contacting them will get anywhere. I thought that printing out a word or two could be a simple task, but I guess not. Although the printer comes with software, I just wanted to see how far I could go with Core Bluetooth.

Yeah... That came upon me while I was at sleep.

Yes. That works. Thanks a million.

Thanks, DTS Engineer. Unfortunately, that's worse than using NSWindowDelegate with AppDelegate. My sample macOS application never receives a call with scenePhase when a window closes.

Actually, I'm not so sure that it's the escaped apostrophe that causes an SQLite error. I assumed so without realizing that the printed text in the console box is not what SQLite sees. Anyway, I'm going to bed. Thanks for pointing that out.

Oh, I see what you mean. If I try to use an SQL command with a string quoted with apostrophes in order to insert initial values to an SQLite database file, SQLite seems to see escaped apostrophes rather than apostrophes as SQLite gives me an error.

I need to quote each value with either an apostrophe or a double quotation mark, not an escaped one.

Thank you for your tip, DTS Engineer. I guess, you've given me a clue. The background color doesn't change because it has no button style. I've added .buttonStyle(.plain) below the clipShape line. And it now has a background color. Thank you.

I realize that my question is confusing since I've posted irrelevant lines of code for a contextual menu. I'm sorry about that.

I've placed 'tableRowAction()' inside tableViewSelectionDidChange(_:), and it works. Thanks a lot.

I've created a very simpler sample project. The ContentView guy doesn't received a call back. 😢

Thank you, DTS Engineer. That's exactly what I have been trying to do. That @escaping part is what I was not able to figure out. Anyway, I've implemented it with no errors. Unfortunately, the ContentView guy doesn't receive a tableRowAction callBack. I'll make a sample project with a simpler version and give it a try.