pinvoke.net: Edit: powrprof.GetPwrCapabilities

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Summary: Retrieves information about the system power capabilities.

!!!!C# Signature:
 [DllImport("powrprof.dll", SetLastError=true)]
 [return: MarshalAs(UnmanagedType.U1)]
 static extern bool GetPwrCapabilities(out SYSTEM_POWER_CAPABILITIES systemPowerCapabilites);
!!!!VB Signature:
 Declare Function GetPwrCapabilities Lib "powrprof.dll" (TODO) As TODO
!!!!User-Defined Types:
[SYSTEM_POWER_CAPABILITIES]

!!!!Alternative Managed API:
Do you know one?  Please contribute it!

!!!!Notes:
None.

!!!!Tips & Tricks:
Please add some!

!!!!Sample Code:

[DllImport("powrprof.dll", SetLastError = true)]
        [return: MarshalAs(UnmanagedType.U1)]
        static extern bool GetPwrCapabilities(out SYSTEM_POWER_CAPABILITIES systemPowerCapabilites);

static SYSTEM_POWER_CAPABILITIES systemPowerCapabilites;
        static PowerStatus()
        {
            GetPwrCapabilities(out SYSTEM_POWER_CAPABILITIES);
        }

/// <summary>
        /// Check out if there is a power botton present in the system.
        /// </summary>
        public static bool PowerButtonPresent
        {
            get
            {   
                return systemPowerCapabilites.PowerButtonPresent;
            }
        }
        
        /// <summary>
        /// Check out if there is a sleep botton present in the system.
        /// </summary>
        public static bool SleepButtonPresent
        {
            get
            {
                return systemPowerCapabilites.SleepButtonPresent;
            }
        }

Documentation: GetPwrCapabilities@msdn on MSDN