The HTML Help API supports a set of commands (uCommand values) that enable you to access functionality programmatically.
The most basic of the commands is HH_DISPLAY_TOPIC, which enables you to open a compiled help (.chm) file in a specific help window and display a specific topic within the help file.
Commands quick reference
| Category | Commands |
| Window types | |
| Context-sensitive help | |
| Keyword lookups | |
| Navigation pane | |
| Error messages | |
| Contents synchronization | |
| Single threading | |
See Also
About the HTML Help API