About Commands

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

Window types
Context-sensitive help
Keyword lookups
Navigation pane
Error messages
Contents synchronization
Single threading


Related topics

About the HTML Help API