National Instruments 320682C

Chapter 8 Utility Library

HELP_CONTEXTPOPUP—Displays in a pop-up window a particular Help topic identified by a

context number that has been defined in the [MAP] section of the .HPJ file. The main help

window is not displayed. In this case, additionalLongData is the context number of the topic.

HELP_HELPONHELP—Displays the contents topic of the designated Using Help file.

HELP_KEY—Displays the topic in the keyword list that matches the keyword passed in the

additionalStringData parameter if there is one exact match. If there is more than one match, it

displays the first topic found. If there is no match it displays an error message.

HELP_PARTIALKEY—Displays the topic found in the keyword list that matches the keyword

passed in the additionalStringData parameter if there is one exact match. If there is more than

one match, displays the Search dialog box with the topics listed in the Go To list box. If there is

no match, it displays the Search dialog box. If you just want to bring up the Search dialog box

without passing a keyword, you should use a pointer to an empty string ("").

HELP_POPUPID—Displays in a pop-up window the topic identified by a context string. The

main window help is not displayed.

HELP_QUIT—Closes the help file. It will have no effect if the help file was opened by another

executable.

HELP_SETCONTENTS—Determines which Contents topic Help should display when the user

chooses the Contents button in Help. This call should never be used with HELP_CONTENTS. If

a Help file has two or more Contents topics, the application must assign one as the default. To

ensure that the correct Contents topic remains set, the application should call SystemHelp()

with command set to HELP_SETCONTENTS and the additionalLongData parameter

specifying the corresponding context identifier.