C# Signature:
[DllImport("powrprof.dll", SetLastError=true)]
private static extern UInt32 CallNtPowerInformation(
Int32 InformationLevel,
IntPtr lpInputBuffer,
UInt32 nInputBufferSize,
IntPtr lpOutputBuffer,
UInt32 nOutputBufferSize
);
VB Signature:
<DllImport("powrprof.dll", SetLastError := True)> _
Private Shared Function CallNtPowerInformation(InformationLevel As Int32, lpInputBuffer As IntPtr, nInputBufferSize As UInt32, lpOutputBuffer As IntPtr, nOutputBufferSize As UInt32) As UInt32
End Function
User-Defined Types:
None.
Alternative Managed API:
Do you know one? Please contribute it!
Notes:
None.
Tips & Tricks:
Please add some!
Sample Code:
IntPtr status = Marshal.AllocCoTaskMem(Marshal.SizeOf(typeof(SYSTEM_BATTERY_STATE)));
uint retval = CallNtPowerInformation(
5, // SystemBatteryState
(IntPtr)null,
0,
status,
(UInt32)Marshal.SizeOf(typeof(SYSTEM_BATTERY_STATE))
);
SYSTEM_BATTERY_STATE batt_status = (SYSTEM_BATTERY_STATE)Marshal.PtrToStructure(status, typeof(SYSTEM_BATTERY_STATE));
