NAME

cgIsContext - determine if a context handle references a valid context

SYNOPSIS

  #include <Cg/cg.h>

  CGbool cgIsContext( CGcontext context );

PARAMETERS

context

The context handle to check.

RETURN VALUES

Returns CG_TRUE if context references a valid context.

Returns CG_FALSE otherwise.

DESCRIPTION

cgIsContext returns CG_TRUE if context references a valid context, CG_FALSE otherwise.

EXAMPLES

  CGcontext context = NULL;
  cgIsContext(context);        /* returns CG_FALSE */

  context = cgCreateContext();
  cgIsContext(context);        /* returns CG_TRUE if create succeeded */

  cgDestroyContext(context);
  cgIsContext(context);        /* returns CG_FALSE */

ERRORS

None.

HISTORY

cgIsContext was introduced in Cg 1.1.

SEE ALSO

cgCreateContext, cgDestroyContext