"Henning M" <henn***@fys.ku.dk> wrote in message
news:a0dde$443796ab$3e3d8433$30789@news.arrownet.dk...
> Hi,
>
> I'm trying to use stringbuilder to collect a list of strings. (as
> suggested by Claes Bergefall)
>
> Declare Auto Function CM_Get_Device_ID_List Lib "cfgmgr32.dll" (ByVal
> pszFilter As String, ByVal ptChar As System.Text.StringBuilder, ByVal
> bufferLen As Integer, ByVal ulFlags As Integer) As Integer
>
> Dim sb As New StringBuilder(len + 1)
> CM_Get_Device_ID_List(filter, sb, sb.Capacity, flags)
>
> But this only givs me the first string and I need them all..
> Is it possible to configure the StringBuilder to use a double NULL value
> as string termination.
> or are there another way of retriving the list?
>
> BTW does anyone know why there are no pointers in VB, I didn't find them
> to be a problem in C? I liked them.
>
> Henning
>
>
>
>
>
>
>

"Stephany Young" <noone@localhost> wrote in message
news:%23nBIj4vWGHA.1352@TK2MSFTNGP05.phx.gbl...
> What makes you think that you are only getting the first string?
>
> Are you perchance doing something a'kin to?:
>
>  Console.Writeline(sb.ToString)
>
> If so, try:
>
>  Console.Writeline("*{0}*", sb.ToString)
>
> and see what happens.
>
> I suspect that you are, in fact, getting all the strings but the 2nd and
> subsequent strings are being 'hidden' by the first null character
> delimiter.
>
> Try stripping the trailing nulls and then splitting the string into an
> array of strings and you just might be pleasantly surprised:
>
>  Dim _s As String = sb.ToString.Trim
>
>  Dim _ss() As String = _s.Split(ControlChars.NullChar)
>
>  For Each _s in _ss
>    Console.Writeline(_s)
>  Next
>
>
>
> "Henning M" <henn***@fys.ku.dk> wrote in message
> news:a0dde$443796ab$3e3d8433$30789@news.arrownet.dk...
>> Hi,
>>
>> I'm trying to use stringbuilder to collect a list of strings. (as
>> suggested by Claes Bergefall)
>>
>> Declare Auto Function CM_Get_Device_ID_List Lib "cfgmgr32.dll" (ByVal
>> pszFilter As String, ByVal ptChar As System.Text.StringBuilder, ByVal
>> bufferLen As Integer, ByVal ulFlags As Integer) As Integer
>>
>> Dim sb As New StringBuilder(len + 1)
>> CM_Get_Device_ID_List(filter, sb, sb.Capacity, flags)
>>
>> But this only givs me the first string and I need them all..
>> Is it possible to configure the StringBuilder to use a double NULL value
>> as string termination.
>> or are there another way of retriving the list?
>>
>> BTW does anyone know why there are no pointers in VB, I didn't find them
>> to be a problem in C? I liked them.
>>
>> Henning
>>
>>
>>
>>
>>
>>
>>
>
>

"Henning M" <henn***@fys.ku.dk> wrote in message
news:3ca1b$4437a0bc$3e3d8433$12430@news.arrownet.dk...
> Hi,
>
> I tried both
>    Console.Writeline("*{0}*", sb.ToString)
> Output:
> *ACPI\AuthenticAMD_-_x86_Family_6_Model_6\_0*
>
> And
>    Dim _s As String = sb.ToString.Trim
>    Dim _ss() As String = _s.Split(ControlChars.NullChar)
>    For Each _s in _ss
>    Console.Writeline(_s)
>    Next
> Output:
> ACPI\AuthenticAMD_-_x86_Family_6_Model_6\_0
>
> So it looks like I do only get the first item in the list....
>
> Other idears?
>
> /Henning
>
> "Stephany Young" <noone@localhost> wrote in message
> news:%23nBIj4vWGHA.1352@TK2MSFTNGP05.phx.gbl...
>> What makes you think that you are only getting the first string?
>>
>> Are you perchance doing something a'kin to?:
>>
>>  Console.Writeline(sb.ToString)
>>
>> If so, try:
>>
>>  Console.Writeline("*{0}*", sb.ToString)
>>
>> and see what happens.
>>
>> I suspect that you are, in fact, getting all the strings but the 2nd and
>> subsequent strings are being 'hidden' by the first null character
>> delimiter.
>>
>> Try stripping the trailing nulls and then splitting the string into an
>> array of strings and you just might be pleasantly surprised:
>>
>>  Dim _s As String = sb.ToString.Trim
>>
>>  Dim _ss() As String = _s.Split(ControlChars.NullChar)
>>
>>  For Each _s in _ss
>>    Console.Writeline(_s)
>>  Next
>>
>>
>>
>> "Henning M" <henn***@fys.ku.dk> wrote in message
>> news:a0dde$443796ab$3e3d8433$30789@news.arrownet.dk...
>>> Hi,
>>>
>>> I'm trying to use stringbuilder to collect a list of strings. (as
>>> suggested by Claes Bergefall)
>>>
>>> Declare Auto Function CM_Get_Device_ID_List Lib "cfgmgr32.dll" (ByVal
>>> pszFilter As String, ByVal ptChar As System.Text.StringBuilder, ByVal
>>> bufferLen As Integer, ByVal ulFlags As Integer) As Integer
>>>
>>> Dim sb As New StringBuilder(len + 1)
>>> CM_Get_Device_ID_List(filter, sb, sb.Capacity, flags)
>>>
>>> But this only givs me the first string and I need them all..
>>> Is it possible to configure the StringBuilder to use a double NULL value
>>> as string termination.
>>> or are there another way of retriving the list?
>>>
>>> BTW does anyone know why there are no pointers in VB, I didn't find them
>>> to be a problem in C? I liked them.
>>>
>>> Henning
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>
>>
>
>

"Stephany Young" <noone@localhost> wrote in message
news:%23oPxDRwWGHA.4144@TK2MSFTNGP04.phx.gbl...
> Not enough information!
>
> You have to make sure that the StringBuilder object is big enough to hold
> the result. You are setting it's capacity to len + 1, so what is len?
>
> Also, does filter and/or flags have any effect on what is supposed to be
> returned?
>
>
> "Henning M" <henn***@fys.ku.dk> wrote in message
> news:3ca1b$4437a0bc$3e3d8433$12430@news.arrownet.dk...
>> Hi,
>>
>> I tried both
>>    Console.Writeline("*{0}*", sb.ToString)
>> Output:
>> *ACPI\AuthenticAMD_-_x86_Family_6_Model_6\_0*
>>
>> And
>>    Dim _s As String = sb.ToString.Trim
>>    Dim _ss() As String = _s.Split(ControlChars.NullChar)
>>    For Each _s in _ss
>>    Console.Writeline(_s)
>>    Next
>> Output:
>> ACPI\AuthenticAMD_-_x86_Family_6_Model_6\_0
>>
>> So it looks like I do only get the first item in the list....
>>
>> Other idears?
>>
>> /Henning
>>
>> "Stephany Young" <noone@localhost> wrote in message
>> news:%23nBIj4vWGHA.1352@TK2MSFTNGP05.phx.gbl...
>>> What makes you think that you are only getting the first string?
>>>
>>> Are you perchance doing something a'kin to?:
>>>
>>>  Console.Writeline(sb.ToString)
>>>
>>> If so, try:
>>>
>>>  Console.Writeline("*{0}*", sb.ToString)
>>>
>>> and see what happens.
>>>
>>> I suspect that you are, in fact, getting all the strings but the 2nd and
>>> subsequent strings are being 'hidden' by the first null character
>>> delimiter.
>>>
>>> Try stripping the trailing nulls and then splitting the string into an
>>> array of strings and you just might be pleasantly surprised:
>>>
>>>  Dim _s As String = sb.ToString.Trim
>>>
>>>  Dim _ss() As String = _s.Split(ControlChars.NullChar)
>>>
>>>  For Each _s in _ss
>>>    Console.Writeline(_s)
>>>  Next
>>>
>>>
>>>
>>> "Henning M" <henn***@fys.ku.dk> wrote in message
>>> news:a0dde$443796ab$3e3d8433$30789@news.arrownet.dk...
>>>> Hi,
>>>>
>>>> I'm trying to use stringbuilder to collect a list of strings. (as
>>>> suggested by Claes Bergefall)
>>>>
>>>> Declare Auto Function CM_Get_Device_ID_List Lib "cfgmgr32.dll" (ByVal
>>>> pszFilter As String, ByVal ptChar As System.Text.StringBuilder, ByVal
>>>> bufferLen As Integer, ByVal ulFlags As Integer) As Integer
>>>>
>>>> Dim sb As New StringBuilder(len + 1)
>>>> CM_Get_Device_ID_List(filter, sb, sb.Capacity, flags)
>>>>
>>>> But this only givs me the first string and I need them all..
>>>> Is it possible to configure the StringBuilder to use a double NULL
>>>> value as string termination.
>>>> or are there another way of retriving the list?
>>>>
>>>> BTW does anyone know why there are no pointers in VB, I didn't find
>>>> them to be a problem in C? I liked them.
>>>>
>>>> Henning
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>
>>>
>>
>>
>
>

"Henning M" <henn***@fys.ku.dk> wrote in message
news:dd414$4437aaa4$3e3d8433$32129@news.arrownet.dk...
> Hi, again
>
> Here are some more info.
>
> This is what I have so far..
>
> Declare Auto Function CM_Get_Device_ID_List_Size Lib "cfgmgr32.dll" _
> (ByRef pulLen As Integer, ByVal pszFilter As String, ByVal ulFlags As
> Integer) As Integer
>
> Declare Auto Function CM_Get_Device_ID_List Lib "cfgmgr32.dll" _
> (ByVal pszFilter As String, ByVal ptChar As System.Text.StringBuilder,
> ByVal bufferLen As Integer, ByVal ulFlags As Integer) As Integer
>
>       Dim filter As String
>       Dim flags As Integer
>       Dim len As Integer
>       filter = 0
>       flags = 0
>
>       CM_Get_Device_ID_List_Size(len, filter, flags)
>
>       Dim sb As New StringBuilder(len + 1)
>
>       CM_Get_Device_ID_List(filter, sb, sb.Capacity, flags)
>
>        Console.WriteLine("*{0}*", sb.ToString)
>
>        System.Console.ReadLine()
>
> The length I recive is about 8500, so that sounds right. right?
>
> Thanks for your help
>
> / Henning
>
> Below: The MSDN info for the CM_Get_Device_ID_List
> --------------------------------------------------
>
> CM_Get_Device_ID_List
> The CM_Get_Device_ID_List function retrieves a list of device instance IDs
> for the local machine's device instances.
>
> CMAPI CONFIGRET WINAPI
>  CM_Get_Device_ID_List(
>    IN PCTSTR  pszFilter,  OPTIONAL
>    OUT PTCHAR  Buffer,
>    IN ULONG  BufferLen,
>    IN ULONG  ulFlags
>    );
>
> Parameters
> pszFilter
> Caller-supplied pointer to a character string specifying a subset of the
> machine's device instance identifiers, or NULL. See the following
> description of ulFlags.
> Buffer
> Address of a buffer to receive a set of NULL-terminated device instance
> identifier strings. The end of the set is terminated by an extra NULL. The
> required buffer size should be obtained by calling
> CM_Get_Device_ID_List_Size.
> BufferLen
> Caller-supplied length, in characters, of the buffer specified by Buffer.
> ulFlags
> One of the optional, caller-supplied bit flags, listed in the following
> table, which specify search filters. If no flags are specified, the
> function
> returns all device instance IDs for all device instances.
> CM_GETIDLIST_FILTER_ENUMERATOR
>
> If this flag is set, pszFilter must specify the name of a device
> enumerator,
> optionally followed by a device identifier. The string format is
> EnumeratorName\<DeviceID>, such as ROOT or ROOT\*PNP0500.
> If pszFilter supplies only an enumerator name, the function returns device
> instance IDs for the instances of each device associated with the
> enumerator. Enumerator names can be obtained by calling
> CM_Enumerate_Enumerators.
>
> If pszFilter supplies both an enumerator and a device ID, the function
> returns device instance IDs only for the device instances of the specified
> device, associated with the enumerator.
>
> CM_GETIDLIST_FILTER_SERVICE
>
> If this flag is set, pszFilter must specify the name of a Windows service
> (typically a driver). The function returns device instance IDs for the
> device instances controlled by the specified service.
> Note that if the device tree does not contain a device node for the
> specified service, this function creates one by default. To inhibit this
> behavior, also set CM_GETIDLIST_DONOTGENERATE.
>
> CM_GETIDLIST_FILTER_EJECTRELATIONS
>
> If this flag is set, pszFilter must specify a device name. The function
> returns device instance IDs for the ejection relations of the specified
> device instance.
> CM_GETIDLIST_FILTER_REMOVALRELATIONS
>
> If this flag is set, pszFilter must specify a device name. The function
> returns device instance IDs for the removal relations of the specified
> device instance.
> CM_GETIDLIST_FILTER_POWERRELATIONS
>
> Not used.
> CM_GETIDLIST_FILTER_BUSRELATIONS
>
> Not used.
> CM_GETIDLIST_DONOTGENERATE
>
> Used only with CM_GETIDLIST_FILTER_SERVICE. If set, and if the device tree
> does not contain a device node for the specified service, this flag
> prevents
> the function from creating a device node for the service.
>
>
> Return Value
> If the operation succeeds, the function returns CR_SUCCESS. Otherwise, it
> returns one of the CR_-prefixed error codes defined in cfgmgr32.h.
>
> Headers
> Declared in cfgmgr32.h. Include cfgmgr32.h.
>
> Comments
> For information about device instance IDs, see Device Identification
> Strings.
>
>
>
>
> "Stephany Young" <noone@localhost> wrote in message
> news:%23oPxDRwWGHA.4144@TK2MSFTNGP04.phx.gbl...
>> Not enough information!
>>
>> You have to make sure that the StringBuilder object is big enough to hold
>> the result. You are setting it's capacity to len + 1, so what is len?
>>
>> Also, does filter and/or flags have any effect on what is supposed to be
>> returned?
>>
>>
>> "Henning M" <henn***@fys.ku.dk> wrote in message
>> news:3ca1b$4437a0bc$3e3d8433$12430@news.arrownet.dk...
>>> Hi,
>>>
>>> I tried both
>>>    Console.Writeline("*{0}*", sb.ToString)
>>> Output:
>>> *ACPI\AuthenticAMD_-_x86_Family_6_Model_6\_0*
>>>
>>> And
>>>    Dim _s As String = sb.ToString.Trim
>>>    Dim _ss() As String = _s.Split(ControlChars.NullChar)
>>>    For Each _s in _ss
>>>    Console.Writeline(_s)
>>>    Next
>>> Output:
>>> ACPI\AuthenticAMD_-_x86_Family_6_Model_6\_0
>>>
>>> So it looks like I do only get the first item in the list....
>>>
>>> Other idears?
>>>
>>> /Henning
>>>
>>> "Stephany Young" <noone@localhost> wrote in message
>>> news:%23nBIj4vWGHA.1352@TK2MSFTNGP05.phx.gbl...
>>>> What makes you think that you are only getting the first string?
>>>>
>>>> Are you perchance doing something a'kin to?:
>>>>
>>>>  Console.Writeline(sb.ToString)
>>>>
>>>> If so, try:
>>>>
>>>>  Console.Writeline("*{0}*", sb.ToString)
>>>>
>>>> and see what happens.
>>>>
>>>> I suspect that you are, in fact, getting all the strings but the 2nd
>>>> and subsequent strings are being 'hidden' by the first null character
>>>> delimiter.
>>>>
>>>> Try stripping the trailing nulls and then splitting the string into an
>>>> array of strings and you just might be pleasantly surprised:
>>>>
>>>>  Dim _s As String = sb.ToString.Trim
>>>>
>>>>  Dim _ss() As String = _s.Split(ControlChars.NullChar)
>>>>
>>>>  For Each _s in _ss
>>>>    Console.Writeline(_s)
>>>>  Next
>>>>
>>>>
>>>>
>>>> "Henning M" <henn***@fys.ku.dk> wrote in message
>>>> news:a0dde$443796ab$3e3d8433$30789@news.arrownet.dk...
>>>>> Hi,
>>>>>
>>>>> I'm trying to use stringbuilder to collect a list of strings. (as
>>>>> suggested by Claes Bergefall)
>>>>>
>>>>> Declare Auto Function CM_Get_Device_ID_List Lib "cfgmgr32.dll" (ByVal
>>>>> pszFilter As String, ByVal ptChar As System.Text.StringBuilder, ByVal
>>>>> bufferLen As Integer, ByVal ulFlags As Integer) As Integer
>>>>>
>>>>> Dim sb As New StringBuilder(len + 1)
>>>>> CM_Get_Device_ID_List(filter, sb, sb.Capacity, flags)
>>>>>
>>>>> But this only givs me the first string and I need them all..
>>>>> Is it possible to configure the StringBuilder to use a double NULL
>>>>> value as string termination.
>>>>> or are there another way of retriving the list?
>>>>>
>>>>> BTW does anyone know why there are no pointers in VB, I didn't find
>>>>> them to be a problem in C? I liked them.
>>>>>
>>>>> Henning
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>>
>>>
>>
>>
>
>

"Stephany Young" <noone@localhost> wrote in message
news:O5JXFFxWGHA.3684@TK2MSFTNGP05.phx.gbl...
> Had me bluffed for bit but finally got it!
>
> First of all I suggust you turn Option Strict on. This will help you avoid
> various gotchas.
>
> The secret is that the ptChar parameter of CM_Get_Device_ID_List really
> wants an array of characters. While it could be argued that a
> stringbuilder van represent an array of characters, in this case it does
> not work.
>
> Change the declaration to ByVal ptChar As Char() and try this - it works
> for me:
>
>  Dim filter As String = ""
>  Dim flags As Integer = 0
>  Dim len As Integer
>
>  Console.WriteLine("CM_Get_Device_ID_List_Size = {0}",
> CM_Get_Device_ID_List_Size(len, filter, flags))
>
>  Dim c() As Char = New Char(len - 1) {}
>
>  Console.WriteLine("CM_Get_Device_ID_List = {0}",
> CM_Get_Device_ID_List(filter, c, c.Length, flags))
>
>  Dim sb As New StringBuilder()
>
>  sb.Append(c, 0, c.Length)
>
>  Dim ss() As String =
> sb.ToString.Trim(ControlChars.NullChar).Split(ControlChars.NullChar)
>
>  Console.WriteLine("---- Start of Device list ----")
>
>  For Each s As String In ss
>    Console.WriteLine(s)
>  Next
>
>  Console.WriteLine("---- End of Device list ----")
>
>
>
> "Henning M" <henn***@fys.ku.dk> wrote in message
> news:dd414$4437aaa4$3e3d8433$32129@news.arrownet.dk...
>> Hi, again
>>
>> Here are some more info.
>>
>> This is what I have so far..
>>
>> Declare Auto Function CM_Get_Device_ID_List_Size Lib "cfgmgr32.dll" _
>> (ByRef pulLen As Integer, ByVal pszFilter As String, ByVal ulFlags As
>> Integer) As Integer
>>
>> Declare Auto Function CM_Get_Device_ID_List Lib "cfgmgr32.dll" _
>> (ByVal pszFilter As String, ByVal ptChar As System.Text.StringBuilder,
>> ByVal bufferLen As Integer, ByVal ulFlags As Integer) As Integer
>>
>>       Dim filter As String
>>       Dim flags As Integer
>>       Dim len As Integer
>>       filter = 0
>>       flags = 0
>>
>>       CM_Get_Device_ID_List_Size(len, filter, flags)
>>
>>       Dim sb As New StringBuilder(len + 1)
>>
>>       CM_Get_Device_ID_List(filter, sb, sb.Capacity, flags)
>>
>>        Console.WriteLine("*{0}*", sb.ToString)
>>
>>        System.Console.ReadLine()
>>
>> The length I recive is about 8500, so that sounds right. right?
>>
>> Thanks for your help
>>
>> / Henning
>>
>> Below: The MSDN info for the CM_Get_Device_ID_List
>> --------------------------------------------------
>>
>> CM_Get_Device_ID_List
>> The CM_Get_Device_ID_List function retrieves a list of device instance
>> IDs
>> for the local machine's device instances.
>>
>> CMAPI CONFIGRET WINAPI
>>  CM_Get_Device_ID_List(
>>    IN PCTSTR  pszFilter,  OPTIONAL
>>    OUT PTCHAR  Buffer,
>>    IN ULONG  BufferLen,
>>    IN ULONG  ulFlags
>>    );
>>
>> Parameters
>> pszFilter
>> Caller-supplied pointer to a character string specifying a subset of the
>> machine's device instance identifiers, or NULL. See the following
>> description of ulFlags.
>> Buffer
>> Address of a buffer to receive a set of NULL-terminated device instance
>> identifier strings. The end of the set is terminated by an extra NULL.
>> The
>> required buffer size should be obtained by calling
>> CM_Get_Device_ID_List_Size.
>> BufferLen
>> Caller-supplied length, in characters, of the buffer specified by Buffer.
>> ulFlags
>> One of the optional, caller-supplied bit flags, listed in the following
>> table, which specify search filters. If no flags are specified, the
>> function
>> returns all device instance IDs for all device instances.
>> CM_GETIDLIST_FILTER_ENUMERATOR
>>
>> If this flag is set, pszFilter must specify the name of a device
>> enumerator,
>> optionally followed by a device identifier. The string format is
>> EnumeratorName\<DeviceID>, such as ROOT or ROOT\*PNP0500.
>> If pszFilter supplies only an enumerator name, the function returns
>> device
>> instance IDs for the instances of each device associated with the
>> enumerator. Enumerator names can be obtained by calling
>> CM_Enumerate_Enumerators.
>>
>> If pszFilter supplies both an enumerator and a device ID, the function
>> returns device instance IDs only for the device instances of the
>> specified
>> device, associated with the enumerator.
>>
>> CM_GETIDLIST_FILTER_SERVICE
>>
>> If this flag is set, pszFilter must specify the name of a Windows service
>> (typically a driver). The function returns device instance IDs for the
>> device instances controlled by the specified service.
>> Note that if the device tree does not contain a device node for the
>> specified service, this function creates one by default. To inhibit this
>> behavior, also set CM_GETIDLIST_DONOTGENERATE.
>>
>> CM_GETIDLIST_FILTER_EJECTRELATIONS
>>
>> If this flag is set, pszFilter must specify a device name. The function
>> returns device instance IDs for the ejection relations of the specified
>> device instance.
>> CM_GETIDLIST_FILTER_REMOVALRELATIONS
>>
>> If this flag is set, pszFilter must specify a device name. The function
>> returns device instance IDs for the removal relations of the specified
>> device instance.
>> CM_GETIDLIST_FILTER_POWERRELATIONS
>>
>> Not used.
>> CM_GETIDLIST_FILTER_BUSRELATIONS
>>
>> Not used.
>> CM_GETIDLIST_DONOTGENERATE
>>
>> Used only with CM_GETIDLIST_FILTER_SERVICE. If set, and if the device
>> tree
>> does not contain a device node for the specified service, this flag
>> prevents
>> the function from creating a device node for the service.
>>
>>
>> Return Value
>> If the operation succeeds, the function returns CR_SUCCESS. Otherwise, it
>> returns one of the CR_-prefixed error codes defined in cfgmgr32.h.
>>
>> Headers
>> Declared in cfgmgr32.h. Include cfgmgr32.h.
>>
>> Comments
>> For information about device instance IDs, see Device Identification
>> Strings.
>>
>>
>>
>>
>> "Stephany Young" <noone@localhost> wrote in message
>> news:%23oPxDRwWGHA.4144@TK2MSFTNGP04.phx.gbl...
>>> Not enough information!
>>>
>>> You have to make sure that the StringBuilder object is big enough to
>>> hold the result. You are setting it's capacity to len + 1, so what is
>>> len?
>>>
>>> Also, does filter and/or flags have any effect on what is supposed to be
>>> returned?
>>>
>>>
>>> "Henning M" <henn***@fys.ku.dk> wrote in message
>>> news:3ca1b$4437a0bc$3e3d8433$12430@news.arrownet.dk...
>>>> Hi,
>>>>
>>>> I tried both
>>>>    Console.Writeline("*{0}*", sb.ToString)
>>>> Output:
>>>> *ACPI\AuthenticAMD_-_x86_Family_6_Model_6\_0*
>>>>
>>>> And
>>>>    Dim _s As String = sb.ToString.Trim
>>>>    Dim _ss() As String = _s.Split(ControlChars.NullChar)
>>>>    For Each _s in _ss
>>>>    Console.Writeline(_s)
>>>>    Next
>>>> Output:
>>>> ACPI\AuthenticAMD_-_x86_Family_6_Model_6\_0
>>>>
>>>> So it looks like I do only get the first item in the list....
>>>>
>>>> Other idears?
>>>>
>>>> /Henning
>>>>
>>>> "Stephany Young" <noone@localhost> wrote in message
>>>> news:%23nBIj4vWGHA.1352@TK2MSFTNGP05.phx.gbl...
>>>>> What makes you think that you are only getting the first string?
>>>>>
>>>>> Are you perchance doing something a'kin to?:
>>>>>
>>>>>  Console.Writeline(sb.ToString)
>>>>>
>>>>> If so, try:
>>>>>
>>>>>  Console.Writeline("*{0}*", sb.ToString)
>>>>>
>>>>> and see what happens.
>>>>>
>>>>> I suspect that you are, in fact, getting all the strings but the 2nd
>>>>> and subsequent strings are being 'hidden' by the first null character
>>>>> delimiter.
>>>>>
>>>>> Try stripping the trailing nulls and then splitting the string into an
>>>>> array of strings and you just might be pleasantly surprised:
>>>>>
>>>>>  Dim _s As String = sb.ToString.Trim
>>>>>
>>>>>  Dim _ss() As String = _s.Split(ControlChars.NullChar)
>>>>>
>>>>>  For Each _s in _ss
>>>>>    Console.Writeline(_s)
>>>>>  Next
>>>>>
>>>>>
>>>>>
>>>>> "Henning M" <henn***@fys.ku.dk> wrote in message
>>>>> news:a0dde$443796ab$3e3d8433$30789@news.arrownet.dk...
>>>>>> Hi,
>>>>>>
>>>>>> I'm trying to use stringbuilder to collect a list of strings. (as
>>>>>> suggested by Claes Bergefall)
>>>>>>
>>>>>> Declare Auto Function CM_Get_Device_ID_List Lib "cfgmgr32.dll" (ByVal
>>>>>> pszFilter As String, ByVal ptChar As System.Text.StringBuilder, ByVal
>>>>>> bufferLen As Integer, ByVal ulFlags As Integer) As Integer
>>>>>>
>>>>>> Dim sb As New StringBuilder(len + 1)
>>>>>> CM_Get_Device_ID_List(filter, sb, sb.Capacity, flags)
>>>>>>
>>>>>> But this only givs me the first string and I need them all..
>>>>>> Is it possible to configure the StringBuilder to use a double NULL
>>>>>> value as string termination.
>>>>>> or are there another way of retriving the list?
>>>>>>
>>>>>> BTW does anyone know why there are no pointers in VB, I didn't find
>>>>>> them to be a problem in C? I liked them.
>>>>>>
>>>>>> Henning
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>>
>>>
>>
>>
>
>