C# Signature:
[DllImport("setupapi.dll", CharSet = CharSet.Auto, SetLastError = true)]
public static extern bool SetupFindNextMatchLine(ref INFCONTEXT ContextIn, [MarshalAs(UnmanagedType.LPTStr)] string Key, out INFCONTEXT ContextOut);
VB Signature:
Public Declare Auto Function SetupFindNextMatchLine Lib "setupapi.dll" (ByRef ContextIn As INFCONTEXT, ByVal Key As String, ByRef ContextOut As INFCONTEXT) As Boolean
User-Defined Types:
Alternative Managed API:
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Notes:
Parameters
| ContextIn | Pointer to the INF file context retrieved by a call to the SetupFindFirstLine function. |
| Key | If this optional parameter is specified, it supplies a key to match. This parameter should be a null-terminated string. This parameter can be Null. If Key is not specified, the SetupFindNextMatchLine function is equivalent to the SetupFindNextLine function. |
| ContextOut | Pointer to a variable in which this function returns the context of the found line. ContextOut can point to ContextIn if the caller wishes. |
Return Value
The function returns a nonzero value if it finds a matching line. Otherwise, the return value is zero. To get extended error information, call GetLastError.
Tips & Tricks:
If ContextIn.Inf references multiple INF files that have been appended together using SetupOpenAppendInfFile, the SetupFindNextMatchLine function searches across the specified section in all files referenced by the HINF to locate the next matching line.
Sample Code:
C#
string infFile = <INF file full path>;
uint ErrorLine = 0;
IntPtr infHandle = SetupOpenInfFile(infFile, null, INF_STYLE_OLDNT | INF_STYLE_WIN4, out ErrorLine);
int iCode = Marshal.GetLastWin32Error();
if (infHandle.ToInt64() != INVALID_HANDLE_VALUE)
{
Console.WriteLine("INF file was opened successfully.");
INFCONTEXT Context = new INFCONTEXT();
if (SetupFindFirstLine(infHandle, "Manufacturer", null, ref Context) == true)
{
Console.WriteLine("Manufacturers list (which match the specific key):");
string manufacturerName = "";
manufacturerName = manufacturerName.PadLeft(256, ' ');
Int32 requiredSize = manufacturerName.Length;
while(SetupFindNextMatchLine(ref Context, <key to search>, out Context) == true)
{
manufacturerName = manufacturerName.PadLeft(256, ' ');
requiredSize = manufacturerName.Length;
SetupGetStringField(ref Context, 1, manufacturerName, manufacturerName.Length, out requiredSize);
manufacturerName = manufacturerName.Substring(0, requiredSize - 1);
Console.WriteLine(manufacturerName);
}
}
else
{
Console.WriteLine("Can't find [Manufacturer] section.");
}
SetupCloseInfFile(infHandle);
}
else
{
Console.WriteLine("Failed to open INF file. Error code - {0}.", iCode);
if (ErrorLine != 0)
{
Console.WriteLine("Failure line - {0}.", ErrorLine);
}
}
VB
Dim infFile As String = <INF file full path>
Dim ErrorLine As UInt32 = 0
Dim infHandle As IntPtr = SetupOpenInfFile(infFile, Nothing, INF_STYLE_OLDNT Or INF_STYLE_WIN4, ErrorLine)
Dim iCode As Integer = Marshal.GetLastWin32Error()
If infHandle.ToInt64() <> INVALID_HANDLE_VALUE Then
Console.WriteLine("INF file was opened successfully.")
Dim Context As INFCONTEXT = New INFCONTEXT()
If SetupFindFirstLine(infHandle, "Manufacturer", Nothing, Context) = True Then
Console.WriteLine("Manufacturers list (which match the specific key):")
Dim manufacturerName As String = ""
manufacturerName = manufacturerName.PadLeft(256, " "c)
Dim requiredSize As Int32 = manufacturerName.Length
While SetupFindNextMatchLine(Context, <key to search>, Context) = True
SetupGetStringField(Context, 1, manufacturerName, manufacturerName.Length, requiredSize)
manufacturerName = manufacturerName.Substring(0, requiredSize - 1)
Console.WriteLine(manufacturerName)
End While
Else
Console.WriteLine("Can't find [Manufacturer] section.")
End If
SetupCloseInfFile(infHandle)
Else
Console.WriteLine("Failed to open INF file. Error code - {0}.", iCode)
If ErrorLine <> 0 Then
Console.WriteLine("Failure line - {0}.", ErrorLine)
End If
End If
