MAINSAIL Language Manual, Section 33.39

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33.39. $dscrPtr

Figure 33–40. $dscrPtr
POINTER($classDscr)
<macro>     $dscrPtr    (POINTER p);

$dscrPtr returns the CLASS descriptor associated with p. A unique CLASS descriptor, of the CLASS $classDscr, exists for each CLASS in memory. The fields of $classDscr are not documented.

If p is NULLPOINTER or dangling, the effect of $dscrPtr is undefined. $dscrPtr(p), where p points to a CLASS descriptor, is NULLPOINTER.

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MAINSAIL Language Manual, Section 33.39