I'm trying to learn about the virtual tree components by studying the demos and reading the CHM help file. The CHM help file downloaded from GetHub has 2.4 MB but there doesn't seem to be any content....just index. See attached jpg.
This is another annoyance when Microsoft eagerly had introduced a new feature (the chm help format), but later they noticed that they had opened a lot of security issues and they fixed it by inhibiting user access to this feature.
In this case it is the potential issue that the downloaded file might be harmful and prevents access to it. But you can by-pass this barrier when you right-click on the chm file in the explorer and select Properties. At the bottom of the "general" tab there's a checkbox saying that this file is from another computer and possibly poses a security issue, but you are allowed to access the file by checking the checkbox. Of course at your own risk
This is for Windows 10. Maybe Windows 7 was less restrictive, but if not, the issue probably can be handled in a similar way.
The minimal demo program, and some other demos, include a 2nd window with [HINT] info. See attachment. How can I remove this window from the project?
You mean the second black Window? This is the console output. You can disable it normally by going to the Project Options and checking the "Win32 gui application" checkbox under "Compiler Options" > "Config and Target" (by default it is checked, but programmers sometimes turn it off to see debug output).