Programming Forums > Application Development > Visual Basic

Steiner · Aug 13th, 2006, 2:55 AM

Visual Basic 6.0 is not allowing me to use VBPCAP1.0 in my programs I've tried every thing I can think of and I know that winpcap is installed and the VBPCAP.DLL is in the project folder and VBPCAP.BAS is attached. So when I goto run the test program provided or anyother program for that matter, I get "runtime error 49, Bad DLL Calling convention" and when I goto debug it's always on this line of script "vpGetAdapterInfo" so it's not recognizing the call to check for network devices (I think). Am I missing some obvious piece of installation or is something corrupt or any other ideas??

Ooble · Aug 13th, 2006, 8:40 AM

Taking a look at the VBPCAP 1.0 beta, there are two files named VBPCAPAPI_v1.bas, and none named VBPCAP.BAS. Which one do you mean? Did you write the module yourself?

Steiner · Aug 13th, 2006, 1:34 PM

VBPCAPAPI_v1.bas is the one in the "test" pogram that came with VBPCAP and it's listed as a module

Ooble · Aug 13th, 2006, 5:25 PM

Well, here's the definition of the function:

(Toggle Plain Text)

Public Declare Function vpGetAdapterInfo Lib "VBPCAP.DLL" (ByVal ID As Integer, ad As AdINFO) As Long

Looks fine to me - anyone see a problem with it?

Steiner · Aug 14th, 2006, 2:34 AM

that part was already in the module, do I have to change the references or components or something?

john Wesley · Aug 14th, 2006, 5:05 AM

Looks right to me.

Do you call it like this?, and can we see your use of it?

Steiner · Aug 14th, 2006, 6:03 PM

does anyone know an alternative to VBPCAP that I can use to make a packet sniffer if I can't get this to work, would rawsockets work at all?

here is the script though:

(Toggle Plain Text)

Dim numadapters As Long
Dim i As Integer
Dim d As AdINFO
numadapters = VBPcapInit ' Start VBPCAP engine

For i = 0 To numadapters - 1
vpGetAdapterInfo i, d  'Uncomment this and comment the line above
cbadapter.AddItem d.Description
Next

cbadapter.ListIndex = 0

thanks

Ooble · Aug 15th, 2006, 7:11 AM

Well, the way the function works, it looks like the variables in the declaration should be ByRef, not ByVal. I can't see how the developer of the library would get something like that wrong though.

Aug 13th, 2006, 2:55 AM	#1
Steiner Newbie Join Date: Jan 2006 Posts: 13 Rep Power: 0	VBpcap Visual Basic 6.0 is not allowing me to use VBPCAP1.0 in my programs I've tried every thing I can think of and I know that winpcap is installed and the VBPCAP.DLL is in the project folder and VBPCAP.BAS is attached. So when I goto run the test program provided or anyother program for that matter, I get "runtime error 49, Bad DLL Calling convention" and when I goto debug it's always on this line of script "vpGetAdapterInfo" so it's not recognizing the call to check for network devices (I think). Am I missing some obvious piece of installation or is something corrupt or any other ideas??

Aug 13th, 2006, 8:40 AM	#2
Ooble I eat cake for breakfast. Join Date: Jul 2004 Location: In my box. Posts: 4,434 Rep Power: 8	Taking a look at the VBPCAP 1.0 beta, there are two files named VBPCAPAPI_v1.bas, and none named VBPCAP.BAS. Which one do you mean? Did you write the module yourself? __________________ Me :: You :: Them

Aug 13th, 2006, 5:25 PM	#4
Ooble I eat cake for breakfast. Join Date: Jul 2004 Location: In my box. Posts: 4,434 Rep Power: 8	Well, here's the definition of the function: (Toggle Plain Text) Public Declare Function vpGetAdapterInfo Lib "VBPCAP.DLL" (ByVal ID As Integer, ad As AdINFO) As Long Public Declare Function vpGetAdapterInfo Lib "VBPCAP.DLL" (ByVal ID As Integer, ad As AdINFO) As Long Looks fine to me - anyone see a problem with it? __________________ Me :: You :: Them

Aug 14th, 2006, 5:05 AM	#6
john Wesley Hobbyist Programmer Join Date: May 2006 Location: United Kingdom Posts: 119 Rep Power: 3	Looks right to me. Do you call it like this?, and can we see your use of it? __________________ Mona Lisa must of had the highway blues you can tell by the way she smiles..

Aug 14th, 2006, 6:03 PM	#7
Steiner Newbie Join Date: Jan 2006 Posts: 13 Rep Power: 0	does anyone know an alternative to VBPCAP that I can use to make a packet sniffer if I can't get this to work, would rawsockets work at all? here is the script though: (Toggle Plain Text) Dim numadapters As Long Dim i As Integer Dim d As AdINFO numadapters = VBPcapInit ' Start VBPCAP engine For i = 0 To numadapters - 1 vpGetAdapterInfo i, d 'Uncomment this and comment the line above cbadapter.AddItem d.Description Next cbadapter.ListIndex = 0 Dim numadapters As Long Dim i As Integer Dim d As AdINFO numadapters = VBPcapInit ' Start VBPCAP engine For i = 0 To numadapters - 1 vpGetAdapterInfo i, d 'Uncomment this and comment the line above cbadapter.AddItem d.Description Next cbadapter.ListIndex = 0 thanks

Aug 13th, 2006, 1:34 PM	#3
Steiner Newbie Join Date: Jan 2006 Posts: 13 Rep Power: 0	VBPCAPAPI_v1.bas is the one in the "test" pogram that came with VBPCAP and it's listed as a module

Aug 14th, 2006, 2:34 AM	#5
Steiner Newbie Join Date: Jan 2006 Posts: 13 Rep Power: 0	that part was already in the module, do I have to change the references or components or something?

Aug 15th, 2006, 7:11 AM	#8
Ooble I eat cake for breakfast. Join Date: Jul 2004 Location: In my box. Posts: 4,434 Rep Power: 8	Well, the way the function works, it looks like the variables in the declaration should be ByRef, not ByVal. I can't see how the developer of the library would get something like that wrong though. __________________ Me :: You :: Them

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