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 |
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| Context-sensitive help |
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| Keyword lookups |
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| Navigation pane |
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| Error messages |
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| Contents synchronization |
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| Single threading |
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See Also
About the HTML Help API