[Gambas-user] Gambas3 and Gnu scientific library

[Jussi Lahtinen]

No, AFAIK there is nothing that returns value for pointer, like in your
case.

Jussi


2011/5/18 Phạm Quang Dương <soleilpqd at ...626...>

> Hope this help :)
> The key is Pointer.
>
> 2011/4/9 Benoît Minisini <gambas at ...1...>
> >
> > aStruct * anExternFunc(...)
> >
> > with:
> >
> > aStruct {
> >
> > aClass *data
> > aStruct *previous
> > aStruct *next
> > }
> >
> >
> > How to get all *data
> > I tried
> >
> > pNext = anExternFunc(...)
> > while pNext <> null
> >
> > pData = Pointer@(pNext)
> >
> > ...
> >
> > pNext = pData + SizeOf(gb.pointer)*2
> >
> > wend
> >
> > and failed.
> >
>
> --8<--------------------------
> >
> > --------------------------------
> >
> > pStruct = anExternFunc(...)
> >
> > While pStruct
> >
> >  pData = Pointer@(pStruct)
> >
> >  ...
> >
> >  pStruct = Pointer@(pStruct + Sizeof(gb.Pointer) * 2)
> >
> > Wend
> >
> > --8<----------------------------------------------------------
> >
> > That should work. Does it?
> >
> > You can use a memory stream and a structure too:
> >
> > --8<----------------------------------------------------------
> >
> > Struct MyDataSlot
> >  Data As Pointer
> >  Previous As Pointer
> >  Next As Pointer
> > End Struct
> >
> > ...
> >
> > Dim hMem As Stream
> > Dim hSlot As MyDataSlot
> >
> > pStruct = anExternFunc(...)
> >
> > While pStruct
> >
> >  hMem = Memory pStruct For Read
> >
> >  hSlot = Read #hMem As MyDataSlot
> >
> >  pData = hSlot.Data
> >
> >  ...
> >
> >  pStruct = Pointer@(hSlot.Next)
> >
> > Wend
> >
> > --8<----------------------------------------------------------
> >
> > Regards,
> >
> > --
> > Benoît Minisini
> >
>
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