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/* win32.cs $
This file is part of the HandBrake source code.
Homepage: <http://handbrake.fr>.
It may be used under the terms of the GNU General Public License. */
namespace Handbrake.Functions
{
using System;
using System.Runtime.InteropServices;
/// <summary>
/// Win32 API calls
/// </summary>
public class Win32
{
/// <summary>
/// Set the Forground Window
/// </summary>
/// <param name="hWnd">
/// The h wnd.
/// </param>
/// <returns>
/// A Boolean true when complete.
/// </returns>
[DllImport("user32.dll")]
public static extern bool SetForegroundWindow(int hWnd);
/// <summary>
/// Lock the workstation
/// </summary>
[DllImport("user32.dll")]
public static extern void LockWorkStation();
/// <summary>
/// Exit Windows
/// </summary>
/// <param name="uFlags">
/// The u flags.
/// </param>
/// <param name="dwReason">
/// The dw reason.
/// </param>
/// <returns>
/// an integer
/// </returns>
[DllImport("user32.dll")]
public static extern int ExitWindowsEx(int uFlags, int dwReason);
/// <summary>
/// System Memory Status
/// </summary>
public struct MEMORYSTATUS // Unused var's are required here.
{
/// <summary>
/// Unknown
/// </summary>
public UInt32 dwLength;
/// <summary>
/// Memory Load
/// </summary>
public UInt32 dwMemoryLoad;
/// <summary>
/// Total Physical Memory
/// </summary>
public UInt32 dwTotalPhys; // Used
/// <summary>
/// Available Physical Memory
/// </summary>
public UInt32 dwAvailPhys;
/// <summary>
/// Total Page File
/// </summary>
public UInt32 dwTotalPageFile;
/// <summary>
/// Available Page File
/// </summary>
public UInt32 dwAvailPageFile;
/// <summary>
/// Total Virtual Memory
/// </summary>
public UInt32 dwTotalVirtual;
/// <summary>
/// Available Virtual Memory
/// </summary>
public UInt32 dwAvailVirtual;
}
/// <summary>
/// Global Memory Status
/// </summary>
/// <param name="lpBuffer">
/// The lp buffer.
/// </param>
[DllImport("kernel32.dll")]
public static extern void GlobalMemoryStatus(ref MEMORYSTATUS lpBuffer);
/// <summary>
/// Generate a Console Ctrl Event
/// </summary>
/// <param name="sigevent">
/// The sigevent.
/// </param>
/// <param name="dwProcessGroupId">
/// The dw process group id.
/// </param>
/// <returns>
/// Bool true is sucess
/// </returns>
[DllImport("kernel32.dll", SetLastError = true)]
public static extern bool GenerateConsoleCtrlEvent(ConsoleCtrlEvent sigevent, int dwProcessGroupId);
/// <summary>
/// Console Ctrl Event
/// </summary>
public enum ConsoleCtrlEvent
{
/// <summary>
/// Ctrl - C
/// </summary>
CTRL_C = 0,
/// <summary>
/// Ctrl - Break
/// </summary>
CTRL_BREAK = 1,
/// <summary>
/// Ctrl - Close
/// </summary>
CTRL_CLOSE = 2,
}
[DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
static extern EXECUTION_STATE SetThreadExecutionState(EXECUTION_STATE esFlags);
[FlagsAttribute]
public enum EXECUTION_STATE : uint
{
ES_SYSTEM_REQUIRED = 0x00000001,
ES_CONTINUOUS = 0x80000000,
ES_AWAYMODE_REQUIRED = 0x00000040
}
/// <summary>
/// Prevent the system from sleeping
/// </summary>
public static void PreventSleep()
{
SetThreadExecutionState(EXECUTION_STATE.ES_CONTINUOUS | EXECUTION_STATE.ES_SYSTEM_REQUIRED | EXECUTION_STATE.ES_AWAYMODE_REQUIRED);
}
/// <summary>
/// Allow the system to sleep.
/// </summary>
public static void AllowSleep()
{
SetThreadExecutionState(EXECUTION_STATE.ES_CONTINUOUS);
}
}
}
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