private static bool TryGetDevice(uint index, out string result, QueryInterpretationFlags?flags = null)
{
uint size = 0;
QueryInterpretationFlags targetFlags = flags ?? flagsAll;
PowerManagement.DevicePowerEnumDevices(index, targetFlags, flagsQuery, IntPtr.Zero, ref size);
if (size > 0)
{
var buffer = Marshal.AllocHGlobal((int)size);
try
{
if (PowerManagement.DevicePowerEnumDevices(index, targetFlags, flagsQuery, buffer, ref size) && buffer != IntPtr.Zero)
{
result = Marshal.PtrToStringUni(buffer);
return(true);
}
}
finally
{
Marshal.FreeHGlobal(buffer);
}
}
result = null;
return(false);
}
public static extern bool DevicePowerEnumDevices(uint queryIndex, QueryInterpretationFlags queryInterpretationFlags, QueryFlags queryFlags, IntPtr pReturnBuffer, ref uint pBufferSize);
