win32

using System;
using System.Runtime.InteropServices;
using System.Drawing;
using System.Text;

namespace wsWin
{
    public class Win32
    {

        public const int GW_HWNDFIRST = 0;
        public const int GW_HWNDLAST = 1;
        public const int GW_HWNDNEXT = 2;
        public const int GW_HWNDPREV = 3;
        public const int GW_OWNER = 4;
        public const int GW_CHILD = 5;

        public const int WM_NCCALCSIZE = 0x83;
        public const int WM_WINDOWPOSCHANGING = 0x46;
        public const int WM_PAINT = 0xF;
        public const int WM_CREATE = 0x1;
        public const int WM_NCCREATE = 0x81;
        public const int WM_NCPAINT = 0x85;
        public const int WM_PRINT = 0x317;
        public const int WM_DESTROY = 0x2;
        public const int WM_SHOWWINDOW = 0x18;
        public const int WM_SHARED_MENU = 0x1E2;
        public const int HC_ACTION = 0;
        public const int WH_CALLWNDPROC = 4;
        public const int GWL_WNDPROC = -4;

        internal const int SE_PRIVILEGE_ENABLED = 0x00000002;
        internal const int TOKEN_QUERY = 0x00000008;
        internal const int TOKEN_ADJUST_PRIVILEGES = 0x00000020;
        internal const string SE_SHUTDOWN_NAME = "SeShutdownPrivilege";
        internal const int EWX_LOGOFF = 0x00000000;
        internal const int EWX_SHUTDOWN = 0x00000001;
        internal const int EWX_REBOOT = 0x00000002;
        internal const int EWX_FORCE = 0x00000004;
        internal const int EWX_POWEROFF = 0x00000008;
        internal const int EWX_FORCEIFHUNG = 0x00000010;

        public const int User = 0x0600;
        public const int User_ParmSelect = 0x0601;//May Not Use
        public const int User_ParmClear = 0x0602; //May Not Use
        public const int User_Navigation = 0x603; //May Not Use

        public const int User_Refersh = 0x610;
        public const int User_subDisplayFormNew = 0x611;
        public const int User_subDisplayFormClose = 0x612;
        public const int User_subDisplayFormChange = 0x613;
        //public const int User_subDisplayFormChange = 0x614;
        public const int User_MonitorFormClose = 0x615;

        #region [ Window API ]
        [DllImport("kernel32")]
        public static extern long WritePrivateProfileString(string section, string key, string val, string filePath);
        [DllImport("kernel32")]
        public static extern int GetPrivateProfileString(string section, string key, string def, StringBuilder retVal, int size, string filePath);

        [DllImport("user32.dll")]
        public static extern IntPtr SendMessage(IntPtr hWnd, int msg, IntPtr wPar, IntPtr lPar);

        [DllImport("user32.dll", EntryPoint = "GetWindowLong", CharSet = CharSet.Auto)]
        public static extern int GetWindowLong(HandleRef hWnd, int nIndex);

        [DllImport("user32.dll", EntryPoint = "SetWindowLong", CharSet = CharSet.Auto)]
        public static extern IntPtr SetWindowLong(HandleRef hWnd, int nIndex, int dwNewLong);

        [DllImport("user32.dll")]
        public static extern int GetForegroundWindow();

        [DllImport("User32.dll", CharSet = CharSet.Auto)]
        public static extern IntPtr GetWindowDC(IntPtr handle);

        [DllImport("User32.dll", CharSet = CharSet.Auto)]
        public static extern IntPtr ReleaseDC(IntPtr handle, IntPtr hDC);

        [DllImport("Gdi32.dll", CharSet = CharSet.Auto)]
        public static extern IntPtr CreateCompatibleDC(IntPtr hdc);

        [DllImport("User32.dll", CharSet = CharSet.Auto)]
        public static extern int GetClassName(IntPtr hwnd, char[] className, int maxCount);

        [DllImport("User32.dll", CharSet = CharSet.Auto)]
        public static extern IntPtr GetWindow(IntPtr hwnd, int uCmd);

        [DllImport("User32.dll", CharSet = CharSet.Auto)]
        public static extern bool IsWindowVisible(IntPtr hwnd);

        [DllImport("user32", CharSet = CharSet.Auto)]
        public static extern int GetClientRect(IntPtr hwnd, ref RECT lpRect);

        [DllImport("user32", CharSet = CharSet.Auto)]
        public static extern int GetClientRect(IntPtr hwnd, [In, Out] ref Rectangle rect);

        [DllImport("user32", CharSet = CharSet.Auto)]
        public static extern bool MoveWindow(IntPtr hwnd, int X, int Y, int nWidth, int nHeight, bool bRepaint);

        [DllImport("user32", CharSet = CharSet.Auto)]
        public static extern bool UpdateWindow(IntPtr hwnd);

        [DllImport("user32", CharSet = CharSet.Auto)]
        public static extern bool InvalidateRect(IntPtr hwnd, ref Rectangle rect, bool bErase);

        [DllImport("user32", CharSet = CharSet.Auto)]
        public static extern bool ValidateRect(IntPtr hwnd, ref Rectangle rect);

        [DllImport("user32.dll", CharSet = CharSet.Auto)]
        internal static extern bool GetWindowRect(IntPtr hWnd, [In, Out] ref Rectangle rect);

        [StructLayout(LayoutKind.Sequential)]
        public struct RECT
        {
            public int Left;
            public int Top;
            public int Right;
            public int Bottom;
        }

        [StructLayout(LayoutKind.Sequential)]
        public struct WINDOWPOS
        {
            public IntPtr hwnd;
            public IntPtr hwndAfter;
            public int x;
            public int y;
            public int cx;
            public int cy;
            public uint flags;
        }

        [StructLayout(LayoutKind.Sequential)]
        public struct NCCALCSIZE_PARAMS
        {
            public RECT rgc;
            public WINDOWPOS wndpos;
        }
        #endregion

        [StructLayout(LayoutKind.Sequential, Pack = 1)]
        internal struct TokPriv1Luid
        {
            public int Count;
            public long Luid;
            public int Attr;
        }

        [DllImport("kernel32.dll", ExactSpelling = true)]
        internal static extern IntPtr GetCurrentProcess();
        [DllImport("advapi32.dll", ExactSpelling = true, SetLastError = true)]
        internal static extern bool OpenProcessToken(IntPtr h, int acc, ref IntPtr phtok);
        [DllImport("advapi32.dll", SetLastError = true)]
        internal static extern bool LookupPrivilegeValue(string host, string name, ref long pluid);
        [DllImport("advapi32.dll", ExactSpelling = true, SetLastError = true)]
        internal static extern bool AdjustTokenPrivileges(IntPtr htok, bool disall, ref TokPriv1Luid newst, int len, IntPtr prev, IntPtr relen);
        [DllImport("user32.dll", ExactSpelling = true, SetLastError = true)]
        internal static extern bool ExitWindowsEx(int DoFlag, int rea);

        #region [ Shutdown Functions ]
        private static void DoExitWin(int DoFlag)
        {
            bool ok;
            TokPriv1Luid tp;
            IntPtr hproc = GetCurrentProcess();
            IntPtr htok = IntPtr.Zero;
            ok = OpenProcessToken(hproc, TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, ref htok);
            tp.Count = 1;
            tp.Luid = 0;
            tp.Attr = SE_PRIVILEGE_ENABLED;
            ok = LookupPrivilegeValue(null, SE_SHUTDOWN_NAME, ref tp.Luid);
            ok = AdjustTokenPrivileges(htok, false, ref tp, 0, IntPtr.Zero, IntPtr.Zero);
            ok = ExitWindowsEx(DoFlag, 0);
        }

        public static void Reboot()
        {
            DoExitWin(EWX_FORCE | EWX_REBOOT);
        }
        public static void PowerOff()
        {
            DoExitWin(EWX_FORCE | EWX_POWEROFF);
        }
        public static void LogOff()
        {
            DoExitWin(EWX_FORCE | EWX_LOGOFF);
        }
        #endregion
    }
}