To prepare some structure as argument to DLL call, a memory should be allocated by mema before call, and freed by memf after use. So that structure's life cycle is under the manual control.
I want to delegate this care to JE, something like this: struct=. SIZEOF # ' ' NB. equiv. to: addr=. 15!:14 < 'struct' NB. struct=. mema SIZEOF NB. fill the struct... SIGNATURE 15!:0 < < addr NB. call DLL with addr as a sole parameter return. NB. let JE to do (memf addr) implicitly But the question here is: does JE keep the result of (15!:14 < 'struct') permanent? Or situations are possible when a noun's data address can change (GC, unaliasing etc)? -- Regards, Igor ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
