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About Commands


Microsoft Corporation

Updated June 10, 1999

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



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