DADiSP Worksheet Functions > Function Categories > Menu Functions > HELPFILE
Accesses on-line help files.
HELPFILE("topic", "filename")
"topic" |
- |
A string, the help topic. |
"filename" |
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Optional. A string, the name of the help file. Defaults to dspfun.hlp. |
helpfile("movavg","dspfun.hlp")
loads the help file dspfun.hlp (the DADiSP Function Reference Manual), and displays the topic page for the MOVAVG function.
helpfile("Menus with Custom Help files","dspum.hlp")
loads the help file dspum.hlp (the DADiSP User Manual and Developer’s Guide), and displays the topic page for "Menus with Custom Help Files".
To use HELPFILE in a custom dialog box or menu, use the following syntax (note the tilde character):
@h ~helpfile(topic, filename)
For example:
@h ~helpfile("SPL Hot variables","dspum.hlp")
If the specified topic does not exist in the help file, the help system will display a topic "search" listbox with alphabetized entries; the closest entry to the specified topic will be highlighted.
The specified filename can include the entire path to the help file.