This method is specific to version 3, or higher, of the OS/2 operating system.
This instance method sets the availability of sort attributes for the current folder.
#define INCL_WINWORKPLACE
#include <os2.h>
WPFolder *somSelf; /* Pointer to the object on which the method is being invoked. */
ULONG index; /* Column index for the current details view. */
BOOL Available; /* Flag indicating whether to show or hide the sort attributes. */
BOOL rc; /* Success indicator. */
rc = _wpSetSortAttribAvailable(somSelf, index,
Available);