DosSubFree

This call frees memory previously allocated by DosSubAlloc.

DosSubFree

(SegSelector, BlockOffset, Size)

SegSelector (SEL) - input

Data segment selector.
BlockOffset (USHORT) - input
Memory block offset. The value specified must equal the BlockOffset returned on a previous DosSubAlloc call.
Size (USHORT) - input
Size, in bytes, of the block to be freed.

rc (USHORT) - return

Return code descriptions are:
• NO_ERROR 312
  ERROR_DOSSUB_OVERLAP
  313
  ERROR_DOSSUB_BADSIZE
  Remarks

  DosSubFree specifies the offset of a block of memory previously suballocated by a DosSubAlloc request. If the block specified overlaps memory in the segment that is not suballocated, an error is returned. Like DosSubAlloc, the size parameter must be a multiple of four bytes; otherwise, it is rounded up to a multiple of four bytes.

  The allocated segment is freed by calling DosFreeSeg.

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