Re: Help With PInvoke and SetupDiEnumDriverInfo/SP_DRVINFO_DATA

On Mar 8, 3:50 pm, "Willy Denoyette [MVP]"
<willy.denoye...@xxxxxxxxxx> wrote:
"Rymfax" <cwal...@xxxxxxxxxxxxxx> wrote in message

news:1173384460.483366.285820@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx





Willy,

I made that change and I still get the 1784L error. I'm wondering if
the problem is not with SP_DRVINFO_DATA (cause I have written that
thing every possible way I can think of), but with some other
structure or DllImport I'm using further up the chain. I'm literally
at my whits end on this. I have very similar code in C++ that works
just fine. I'm posting a C# class that has everything I'm doing in
it. I would be VERY grateful if you could take a look at it and see
if you see a problem. As above, everything works fine until it gets
to SetupDiEnumDriverInfo.

Thanks a ton!

--- CODE START ----
class GroupExample
{
public const int CR_SUCCESS = (0x00000000);
public const int DIGCF_PRESENT = (0x00000002);
public const int DIGCF_ALLCLASSES = (0x00000004);

public const int ERROR_NO_MORE_ITEMS = 259;

public const int SPDIT_COMPATDRIVER = (0x00000002);
public const int SPDIT_CLASSDRIVER = (0x00000001);

[StructLayout(LayoutKind.Sequential, CharSet =
CharSet.Unicode)]
public struct SP_DEVINFO_DATA
{
public int cbSize;
public Guid ClassGuid;
public IntPtr DevInst;
public int Reserved;
}

[StructLayout(LayoutKind.Sequential, CharSet =
CharSet.Unicode)]
public struct SP_DRVINSTALL_PARAMS
{
public int cbSize;
public int Rank;
public int Flags;
public int PrivateData;
public int Reserved;
}
[StructLayout(LayoutKind.Sequential, CharSet =
CharSet.Unicode)]
public struct SP_DEVINSTALL_PARAMS
{
public int cbSize;
public int Flags;
public int FlagsEx;
public IntPtr HwndParent;
public IntPtr InstallMsgHandler;
public IntPtr InstallMsgHandlerContext;
public IntPtr FileQueue;
public ulong CallInstallReserved;
public int Reserved;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 260)]
public string DriverPath;

}

[StructLayout(LayoutKind.Sequential, CharSet =
CharSet.Unicode)]
public struct SP_DRVINFO_DATA
{
public int cbSize;
public int DriverType;
public ulong Reserved;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 256)]
public string Description;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 256)]
public string MfgName;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 256)]
public string ProviderName;
public System.Runtime.InteropServices.ComTypes.FILETIME
DriverDate;
public ulong DriverVersion;
}

[DllImport("setupapi.dll", SetLastError = true, CharSet =
CharSet.Unicode)]
public static extern Boolean
SetupDiDestroyDeviceInfoList(IntPtr DeviceInfoSet);

[DllImport("setupapi.dll", SetLastError = true, CharSet =
CharSet.Unicode)]
public static extern IntPtr SetupDiGetClassDevs(ref Guid
ClassGuid, IntPtr Enumerator,
IntPtr hwndParent, int Flags);

[DllImport("setupapi.dll", SetLastError = true, CharSet =
CharSet.Unicode)]
public static extern bool SetupDiEnumDeviceInfo(IntPtr
DeviceInfoSet, int MemberIndex,
ref SP_DEVINFO_DATA DeviceInfoData);

[DllImport("cfgmgr32.dll", SetLastError = true, CharSet =
CharSet.Unicode)]
private static extern int CM_Get_DevNode_Status(ref ulong
status, ref ulong probNum,
IntPtr devInst, int Flag);

[DllImport("setupapi.dll", SetLastError = true, CharSet =
CharSet.Unicode)]
public static extern bool
SetupDiGetDeviceRegistryProperty(IntPtr DeviceInfoSet,
ref SP_DEVINFO_DATA DeviceInfoData, int Property, ref int
PropertyRegDataType,
StringBuilder PropertyBuffer, int PropertyBufferSize, ref
int RequiredSize);

[DllImport("setupapi.dll", SetLastError = true, CharSet =
CharSet.Unicode)]
public static extern bool SetupDiGetDeviceInstallParams(IntPtr
DeviceInfoSet,
ref SP_DEVINFO_DATA DeviceInfoData, ref
SP_DEVINSTALL_PARAMS DeviceInstallParams);

[DllImport("setupapi.dll", SetLastError = true, CharSet =
CharSet.Unicode)]
private static extern bool SetupDiDestroyDriverInfoList(IntPtr
DeviceInfoSet,
ref SP_DEVINFO_DATA DeviceInfoData, int DriverType);

[DllImport("setupapi.dll", SetLastError = true, CharSet =
CharSet.Unicode)]
private static extern bool SetupDiBuildDriverInfoList(IntPtr
DeviceInfoSet,
ref SP_DEVINFO_DATA DeviceInfoData, int DriverType);

[DllImport("setupapi.dll", SetLastError = true, CharSet =
CharSet.Unicode)]
private static extern bool SetupDiEnumDriverInfo(IntPtr
DeviceInfoSet,
ref SP_DEVINFO_DATA DeviceInfoData, int DriverType, int
MemberIndex,
ref SP_DRVINFO_DATA DriverInfoData);

public void RunExample()
{
Guid newG = Guid.Empty;
IntPtr NewDeviceInfoSet = SetupDiGetClassDevs(ref newG,
IntPtr.Zero, IntPtr.Zero,
DIGCF_ALLCLASSES);
SP_DEVINFO_DATA DeviceInfoData = new SP_DEVINFO_DATA();
DeviceInfoData.cbSize =
Marshal.SizeOf(typeof(SP_DEVINFO_DATA));
int deviceCounter = 0;
bool devInfoRetVal =
SetupDiEnumDeviceInfo(NewDeviceInfoSet, deviceCounter, ref
DeviceInfoData);
int devInfoErr = Marshal.GetLastWin32Error();
while (devInfoRetVal && devInfoErr != ERROR_NO_MORE_ITEMS
&& deviceCounter < 3) // < 3 is to keep the loop short for testing
{
ulong status = 0;
ulong problem = 0;
if (CM_Get_DevNode_Status(ref status, ref problem,
DeviceInfoData.DevInst, 0) == CR_SUCCESS)
{
StringBuilder sbDesc = new StringBuilder("");
int MAX_LEN = 512;
int propRegDataType = 0;
sbDesc.Capacity = MAX_LEN;
int reqSize = 0;
SetupDiGetDeviceRegistryProperty(NewDeviceInfoSet,
ref DeviceInfoData,
(int)Setup.SPDRPCodes.SPDRP_FRIENDLYNAME, ref
propRegDataType, sbDesc,
MAX_LEN, ref reqSize);
if (sbDesc.ToString() == "")
{

SetupDiGetDeviceRegistryProperty(NewDeviceInfoSet, ref DeviceInfoData,
(int)Setup.SPDRPCodes.SPDRP_DEVICEDESC,
ref propRegDataType, sbDesc,
MAX_LEN, ref reqSize);
}
if (sbDesc.ToString() == "")
sbDesc.Append("Unknown Description");
StringBuilder sbHWID = new StringBuilder("");
sbHWID.Capacity = MAX_LEN;
SetupDiGetDeviceRegistryProperty(NewDeviceInfoSet,
ref DeviceInfoData,
(int)Setup.SPDRPCodes.SPDRP_HARDWAREID, ref
propRegDataType, sbHWID,
MAX_LEN, ref reqSize);
ScanResults scanResult = new
ScanResults(sbHWID.ToString(), sbDesc.ToString());
Console.WriteLine("Device Detected: {0} - {1}",
sbDesc.ToString(), sbHWID.ToString());

SP_DEVINSTALL_PARAMS deviceInstallParams = new
SP_DEVINSTALL_PARAMS();
deviceInstallParams.cbSize =
Marshal.SizeOf(typeof(SP_DEVINSTALL_PARAMS));
SetupDiGetDeviceInstallParams(NewDeviceInfoSet,
ref DeviceInfoData,
ref deviceInstallParams);
deviceInstallParams.DriverPath = @"C:
\MyDriverPath";
if (!SetupDiBuildDriverInfoList(NewDeviceInfoSet,
ref DeviceInfoData, SPDIT_COMPATDRIVER))
{
int eCode = Marshal.GetLastWin32Error();
Console.WriteLine("\tError Building Driver
Info List. Code: {0}", eCode);
}
int memIndex = 0;
int drvErr = 0;
SP_DRVINFO_DATA drvData = new SP_DRVINFO_DATA();
drvData.cbSize =
Marshal.SizeOf(typeof(SP_DRVINFO_DATA));
bool enumResult =
SetupDiEnumDriverInfo(NewDeviceInfoSet, ref DeviceInfoData,
SPDIT_COMPATDRIVER,
memIndex, ref drvData);
if (!enumResult)
{
drvErr = Marshal.GetLastWin32Error();
Console.WriteLine("\tError Enumerating Driver
Info. Code: {0}", drvErr);
}
while (enumResult && drvErr !=
ERROR_NO_MORE_ITEMS)
{
memIndex++;

}
SetupDiDestroyDriverInfoList(NewDeviceInfoSet, ref
DeviceInfoData, SPDIT_COMPATDRIVER);
}
deviceCounter++;
devInfoRetVal =
SetupDiEnumDeviceInfo(NewDeviceInfoSet, deviceCounter, ref
DeviceInfoData);
devInfoErr = Marshal.GetLastWin32Error();
}
SetupDiDestroyDeviceInfoList(NewDeviceInfoSet);
}
}
--- CODE END ---

Your struct should look like this (partly):

[StructLayout(LayoutKind.Sequential, Pack = 4, CharSet = CharSet.Unicode)] <-----1
public struct SP_DRVINFO_DATA
{
public int cbSize;
public int DriverType;
public IntPtr Reserved;
...

read more »- Hide quoted text -

- Show quoted text -

Willy, You are a GOD among men!!!!

Do you think you could explain to me what the Pack = 4 does and why I
need it for this structure but not any of my others?

Thanks! Would you like my first born? He's yours! :)

.

Relevant Pages

  • Re: im trying to make a list of RAS connections on a pocket pc 2003 d
    ... typedef struct _RASENTRYNAME { ... const int RAS_MaxEntryName = 20; ... uint nRet = RasEnumEntries(IntPtr.Zero, IntPtr.Zero, entryNames, ref cb, ref ...
    (microsoft.public.windowsce.app.development)
  • Re: Help With PInvoke and SetupDiEnumDriverInfo/SP_DRVINFO_DATA
    ... public const int DIGCF_PRESENT =; ... public static extern IntPtr SetupDiGetClassDevs(ref Guid ... ref SP_DEVINFO_DATA DeviceInfoData); ... ref SP_DEVINFO_DATA DeviceInfoData, int Property, ref int ...
    (microsoft.public.dotnet.languages.csharp)
  • Re: Help With PInvoke and SetupDiEnumDriverInfo/SP_DRVINFO_DATA
    ... public const int DIGCF_PRESENT =; ... ref SP_DEVINFO_DATA DeviceInfoData); ... ref SP_DEVINFO_DATA DeviceInfoData, int Property, ref int ... ref SP_DEVINFO_DATA DeviceInfoData, int DriverType); ...
    (microsoft.public.dotnet.languages.csharp)
  • Re: Dllimport and calling function from c#
    ... int output = 0; ... this.iaxc_audio_devices_get(ref ptrDevices, ref nDevs, ref input, ref ... You'll also need to change your struct to ...
    (microsoft.public.dotnet.framework.interop)
  • RE: Read Serial Ports With Visual Basic .NET 2003
    ... > hCommDev, ref DCB lpDCB); ... > hFile, Int32 dwInQueue, Int32 dwOutQueue); ... > SetCommTimeouts(Int32 hFile, ref COMMTIMEOUTS lpCommTimeouts); ... > ByteBuffer, int nNumberOfBytesToWrite, ref int lpNumberOfBytesWritten, ref ...
    (microsoft.public.dotnet.framework.remoting)