Why does GetNetworkParams_() do not work?

[Tranquil]

Code: Select all

Structure FIXED_INFO
  HostName.s
  DomainName.s
  *CurrentDNSServer.l
  *CurrentDNSServerList.l
  NodeType.l
  ScopeId.l
  EnableRouting.l
  EnableProxy.l
  EnableDNS.l
EndStructure



OpenConsole()


res=GetNetworkParams_(info.FIXED_INFO,sizeof(fixed_info))
If res=#ERROR_BUFFER_OVERFLOW
  PrintN("Buffer to small.")
EndIf
If res=#ERROR_INVALID_PARAMETER
  PrintN("Invalid Parameters.")
EndIf
PrintN(info\HostName)

Input()
End

ends with invalid Parameters, but don't know why!?

Can anyone help`?

[Pupil]

The second argument should be a pointer to a ULong..

And your structure is completely wrong, this is what it says in MS SDK:

Code: Select all

typedef struct {
  char HostName[MAX_HOSTNAME_LEN + 4];
  char DomainName[MAX_DOMAIN_NAME_LEN + 4];
  PIP_ADDR_STRING CurrentDnsServer;
  IP_ADDR_STRING DnsServerList;
  UINT NodeType;
  char ScopeId[MAX_SCOPE_ID_LEN + 4];
  UINT EnableRouting;
  UINT EnableProxy;
  UINT EnableDns;
}

[Tranquil]

Thanks Pupil, you are right, so I corrected it to:

Code: Select all

Structure FIXED_INFO
  HostName.s
  DomainName.s
  CurrentDNSServer.s
  CurrentDNSServerList.s
  NodeType.l
  ScopeId.s
  EnableRouting.l
  EnableProxy.l
  EnableDNS.l
EndStructure

OpenConsole()

size.l=SizeOf(FIXED_INFO)

res=GetNetworkParams_(info.FIXED_INFO,@size.l)
If res=#ERROR_BUFFER_OVERFLOW
  PrintN("Buffer to small.")
EndIf
If res=#ERROR_INVALID_PARAMETER
  PrintN("Invalid Parameters.")
EndIf
PrintN(info\HostName)

Input()
End

But it doen't work eighter.
Its maybe the unsigned long what is expected here but PB is only giving a signed one!? Now I get Buffer to small.

[Pupil]

Actually, all stucture items that is of type char array you should declare as an array of bytes, i.e. something like this:

Code: Select all

 'char HostName[MAX_HOSTNAME_LEN + 4]'
Becomes this in PB:
HostName.b[#MAX_HOSTNAME_LEN + 4]

[Tranquil]

Uf, this is bad but it works. But makes more work for coding. Can't see the reason why to do this in that way. Is that a normal behavior?

[gnozal]

There are no fixed length strings in Purebasic unlike Powerbasic for example, so we have to use the byte array stuff

[Pupil]

You need to do this because PB has no fixed length strings.. And you'll never get GetNetworkParams() to work if you set a string type there because a string is just a pointer to a set of nullterminated bytes..

[Tranquil]

Oh I see! FRED? REQUEST!!

[olejr]

You are not the first one to request it..