public static bool DeviceIoControl <TIn, TOut>(SafeFileHandle hDev, uint ioControlCode, TIn inVal, out TOut outVal) where TIn : struct where TOut : struct
{
using (SafeHGlobalHandle ptrIn = SafeHGlobalHandle.Alloc(inVal), ptrOut = SafeHGlobalHandle.Alloc <TOut>())
{
uint bRet;
var ret = Kernel32.DeviceIoControl(hDev, ioControlCode, (IntPtr)ptrIn, (uint)ptrIn.Size, (IntPtr)ptrOut, (uint)ptrOut.Size, out bRet, IntPtr.Zero);
outVal = ptrOut.ToStructure <TOut>();
return(ret);
}
}
public static bool QueryServiceConfig2 <T>(IntPtr hService, ServiceConfigOption dwInfoLevel, out T configInfo)
{
var b = QueryServiceConfig2(hService, dwInfoLevel, IntPtr.Zero, 0, out uint size);
configInfo = default(T);
if (!b && Win32Error.GetLastError() != Win32Error.ERROR_INSUFFICIENT_BUFFER)
{
return(false);
}
if (size < Marshal.SizeOf(typeof(T)))
{
throw new ArgumentException("Type mismatch", nameof(configInfo));
}
using (var buf = new SafeHGlobalHandle((int)size))
{
if (!QueryServiceConfig2(hService, dwInfoLevel, (IntPtr)buf, size, out size))
{
return(false);
}
configInfo = buf.ToStructure <T>();
}
return(true);
}
