Convert xojo.core.mutablememoryblock to string

Best way to xojo.core.mutablememoryblock to String?
cstringvalue / wstringvalue.

What do you need a string for ?

Declare Function SIISLP_GetTextDescription Lib SIISmartibName Selector "SIISLP_GetTextDescription" (Printer as ptr, buffer as ptr, buffersize as UInt32) As int32 dim textblock as new xojo.core.mutablememoryblock(128) result = SIISLP_GetTextDescription (PrinterRef,, 128)

This is declare code need to get string content from textblock