/// <summary>
/// Gets the value for the specified power plan, power mode and setting
/// </summary>
/// <param name="plan">Guid of the power plan</param>
/// <param name="subgroup">The subgroup to look in</param>
/// <param name="setting">The settign to look up</param>
/// <param name="powerMode">Power mode. AC or DC, but not both.</param>
/// <returns>The active index value for the specified setting</returns>
public static uint GetPlanSetting(Guid plan, Guid subgroup, Guid setting, PowerMode powerMode)
{
if (powerMode == (PowerMode.AC | PowerMode.DC))
{
throw new ArgumentException("Can't get both AC and DC values at the same time, because they may be different.");
}
uint value = 0;
uint res = 0;
if (powerMode.HasFlag(PowerMode.AC))
{
res = PowerReadACValueIndex(IntPtr.Zero, ref plan, ref subgroup, ref setting, out value);
}
else if (powerMode.HasFlag(PowerMode.DC))
{
res = PowerReadDCValueIndex(IntPtr.Zero, ref plan, ref subgroup, ref setting, out value);
}
if (res != (uint)ErrorCode.SUCCESS)
{
throw new Win32Exception((int)res);
}
return(value);
}
/// <summary>
/// Alters a setting on a power plan.
/// </summary>
/// <param name="plan">The Guid for the plan you are changing</param>
/// <param name="subgroup">The Guid for the subgroup the setting belongs to</param>
/// <param name="setting">The Guid for the setting you are changing</param>
/// <param name="powerMode">You can chose to alter the AC value, the DC value or both using the bitwise OR operator (|) to join the flags.</param>
/// <param name="value">The new value for the setting. Run <code>powercfg -q</code> from the command line to list possible values</param>
public static void SetPlanSetting(Guid plan, Guid subgroup, Guid setting, PowerMode powerMode, uint value)
{
if (powerMode.HasFlag(PowerMode.AC))
{
var res = PowerWriteACValueIndex(IntPtr.Zero, ref plan, ref subgroup, ref setting, value);
if (res != (uint)ErrorCode.SUCCESS)
{
throw new Win32Exception((int)res);
}
}
if (powerMode.HasFlag(PowerMode.DC))
{
var res = PowerWriteDCValueIndex(IntPtr.Zero, ref plan, ref subgroup, ref setting, value);
if (res != (uint)ErrorCode.SUCCESS)
{
throw new Win32Exception((int)res);
}
}
}
/// <summary>
/// Alters a setting on a power plan.
/// </summary>
/// <param name="plan">The Guid for the plan you are changing</param>
/// <param name="subgroup">The Guid for the subgroup the setting belongs to</param>
/// <param name="setting">The Guid for the setting you are changing</param>
/// <param name="powerMode">You can chose to alter the AC value, the DC value or both using the bitwise OR operator (|) to join the flags.</param>
/// <param name="value">The new value for the setting. Run <code>powercfg -q</code> from the command line to list possible values</param>
public static void SetPlanSetting(Guid plan, SettingSubgroup subgroup, Setting setting, PowerMode powerMode, uint value)
{
Guid subgroupId = SettingIdLookup.SettingSubgroupGuids[subgroup];
Guid settingId = SettingIdLookup.SettingGuids[setting];
if (powerMode.HasFlag(PowerMode.AC))
{
var res = PowerWriteACValueIndex(IntPtr.Zero, ref plan, ref subgroupId, ref settingId, value);
if (res != (uint)ErrorCode.SUCCESS)
{
throw new Win32Exception((int)res);
}
}
if (powerMode.HasFlag(PowerMode.DC))
{
var res = PowerWriteDCValueIndex(IntPtr.Zero, ref plan, ref subgroupId, ref settingId, value);
if (res != (uint)ErrorCode.SUCCESS)
{
throw new Win32Exception((int)res);
}
}
}
