// Token: 0x060001B9 RID: 441 RVA: 0x00014AEC File Offset: 0x00012CEC
public static int EnumerateClasses(uint ClassIndex, StringBuilder ClassName, StringBuilder ClassDescription, ref bool DevicePresent)
{
Guid empty = Guid.Empty;
DeviceClasses.SP_DEVINFO_DATA sp_DEVINFO_DATA = new DeviceClasses.SP_DEVINFO_DATA();
uint num = 0u;
uint num2 = DeviceClasses.CM_Enumerate_Classes(ClassIndex, ref empty, 0u);
DevicePresent = false;
new DeviceClasses.SP_CLASSIMAGELIST_DATA();
if (num2 != 0u)
{
return((int)num2);
}
DeviceClasses.SetupDiClassNameFromGuidA(ref empty, ClassName, num, ref num);
if (num > 0u)
{
ClassName.Capacity = (int)num;
DeviceClasses.SetupDiClassNameFromGuidA(ref empty, ClassName, num, ref num);
}
IntPtr deviceInfoSet = DeviceClasses.SetupDiGetClassDevs(ref empty, 0u, IntPtr.Zero, 2u);
if (deviceInfoSet.ToInt32() == -1)
{
DevicePresent = false;
return(0);
}
uint memberIndex = 0u;
sp_DEVINFO_DATA.cbSize = 28;
sp_DEVINFO_DATA.DevInst = 0;
sp_DEVINFO_DATA.ClassGuid = Guid.Empty;
sp_DEVINFO_DATA.Reserved = 0UL;
if (!DeviceClasses.SetupDiEnumDeviceInfo(deviceInfoSet, memberIndex, sp_DEVINFO_DATA))
{
DevicePresent = false;
return(0);
}
DeviceClasses.SetupDiDestroyDeviceInfoList(deviceInfoSet);
IntPtr keyClass = DeviceClasses.SetupDiOpenClassRegKeyExA(ref empty, 33554432u, 1, IntPtr.Zero, 0u);
if (keyClass.ToInt32() == -1)
{
DevicePresent = false;
return(0);
}
uint num3 = 1000u;
ClassDescription.Capacity = 1000;
uint num4 = DeviceClasses.RegQueryValueA(keyClass, 0u, ClassDescription, ref num3);
if (num4 != 0u)
{
ClassDescription = new StringBuilder("");
}
DevicePresent = true;
DeviceClasses.ClassesGuid = sp_DEVINFO_DATA.ClassGuid;
return(0);
}
private static extern bool SetupDiEnumDeviceInfo(IntPtr DeviceInfoSet, uint MemberIndex, DeviceClasses.SP_DEVINFO_DATA DeviceInfoData);
