[#absl-SetProgramUsageMessage]
= xref:absl.adoc[absl]::SetProgramUsageMessage
:relfileprefix: ../
:mrdocs:

Sets the "usage" message to be used by help reporting routines. For example: absl::SetProgramUsageMessage( absl::StrCat("This program does nothing. Sample usage:n", argv[0], " <uselessarg1> <uselessarg2>")); Do not include commandline flags in the usage: we do that for you! Note: Calling SetProgramUsageMessage twice will trigger a call to std::exit.

== Synopsis

Declared in `<absl/flags/usage.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
void
SetProgramUsageMessage(std::string_view new_usage_message);
----

== Parameters

[cols="1,4"]
|===
| Name| Description
| *new_usage_message*
| The usage message to set.
|===


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