tt_feature_required(library call)										 tt_feature_required(library call)

NAME

       tt_feature_required -- declare a feature to be required by the calling program.

SYNOPSIS

       #include <Tt/tt_c.h>
       Tt_status tt_feature_required(
       Tt_feature feature);

DESCRIPTION

       The  tt_feature_required  function  declares a feature to be required by the calling code. If the feature is available, tt_feature_required
       enables it.

       If the feature requires the ToolTalk service to perform some initialization (for example, TT_FEATURE_MULTITHREADED), the initialization	is
       performed in this call. Some features (such as TT_FEATURE_MULTITHREADED) require this call to be made before calling tt_open.

ARGUMENTS

       feature	 Specifies the feature to be required.

RETURN VALUE

       Upon completion, the tt_feature_required function returns the status of the operation as one of the following Tt_status values:

       TT_OK	 The feature is available and has been enabled.

       TT_ERR_TOOLATE
		 The tt_feature_required call must be made prior to other calls that have already been made to the ToolTalk API.

       TT_ERR_UNIMP
		 The version of the ToolTalk library linked with the calling code does not support the indicated feature.

APPLICATION USAGE

       To  use	the  ToolTalk  library in a multithreaded environment, an application would declare multithreading to be required before a call to
       tt_open or ttdt_open:

       Tt_status ttstat;
       ttstat = tt_feature_required(TT_FEATURE_MULTITHREADED);
       tt_open();

SEE ALSO

       Tt/tt_c.h - Tttt_c(5), tt_feature_enabled(3), tt_open(3), ttdt_open(3)

														 tt_feature_required(library call)