C# Signature:

[DllImport("setupapi.dll", SetLastError=true)]
static extern TODO SetupDiClassGuidsFromName(TODO);

VB Signature:

<DllImport("setupapi.dll")> _
    Private Shared Function SetupDiClassGuidsFromName( _
    ByVal ClassName As StringBuilder, _
    ByRef ClassGuids As Guid, _
    ByVal ClassGuidSize As Integer, _
    ByRef ClassGuidRequiredSize As Integer) As Boolean
    End Function

User-Defined Types:

None.

Alternative Managed API:

Do you know one? Please contribute it!

Notes:

    I am unsure if this declaration is correct.  The one problem that I found is that the function asks for an Array of GUIDs.  I couldn't get that to work, but just using one did work.  I found that none of the device classes had more than one GUID so I figured this to be okay.  Please correct if you know better.

Tips & Tricks:

Please add some!

Sample Code:

    Dim ClassName As New StringBuilder("net")
    Dim ClassGuid As Guid
    Dim GuidSize As Integer = 0
    Dim GuidReqtSize As Integer
    Dim intRtrn As Integer
    intRtrn = SetupDiClassGuidsFromName(ClassName, ClassGuid, GuidSize, GuidReqtSize)
    GuidSize = GuidReqtSize
    intRtrn = SetupDiClassGuidsFromName(ClassName, ClassGuid, GuidSize, GuidReqtSize)
    MsgBox(ClassGuid.ToString)