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