Win32.cs

using System;
using System.Collections.Generic;
using System.Drawing;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace ScreenReaderTest
{
    [StructLayout(LayoutKind.Sequential)]
    public struct sWINDOWPOS
    {
        public IntPtr hwnd;
        public IntPtr hwndInsertAfter;
        public int x;
        public int y;
        public int cx;
        public int cy;
        public int flags;

        public static sWINDOWPOS FromPtr(IntPtr ptr)
        {
            return (sWINDOWPOS)Marshal.PtrToStructure(ptr, typeof(sWINDOWPOS));
        }

        public Rectangle ToRectangle()
        {
            return new Rectangle(x, y, cx, cy);
        }
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct sRECT
    {
        public int left;
        public int top;
        public int right;
        public int bottom;

        public static sRECT FromPtr(IntPtr ptr)
        {
            return (sRECT)Marshal.PtrToStructure(ptr, typeof(sRECT));
        }

        public Rectangle ToRectangle()
        {
            return new Rectangle(left, top, right - left, bottom - top);
        }
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct sPOINT
    {
        public int x;
        public int y;

        public static sPOINT FromPtr(IntPtr ptr)
        {
            return (sPOINT)Marshal.PtrToStructure(ptr, typeof(sPOINT));
        }
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct sWINDOWPLACEMENT
    {
        public int length;
        public int flags;
        public int showCmd;
        public sPOINT ptMinPosition;
        public sPOINT ptMaxPosition;
        public sRECT rcNormalPosition;

        public static sWINDOWPLACEMENT FromPtr(IntPtr ptr)
        {
            return (sWINDOWPLACEMENT)Marshal.PtrToStructure(ptr, typeof(sWINDOWPLACEMENT));
        }
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct sPAINTSTRUCT
    {
        public IntPtr hdc;
        public bool fErase;
        public sRECT rcPaint;
        public bool fRestore;
        public bool fIncUpdate;
        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 32)] public byte[] rgbReserved;
    }

    public class Win32
    {
        public static Guid IID_IAccessible = new Guid(0x618736e0, 0x3c3d, 0x11cf, 0x81, 0x0c, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71);

        public const int OBJID_CLIENT = -4;

        public const int S_OK = 0;

        public const int WM_NULL = 0x0000;
        public const int WM_CREATE = 0x0001;
        public const int WM_DESTROY = 0x0002;
        public const int WM_MOVE = 0x0003;
        public const int WM_SIZE = 0x0005;
        public const int WM_ACTIVATE = 0x0006;
        public const int WM_SETFOCUS = 0x0007;
        public const int WM_KILLFOCUS = 0x0008;
        public const int WM_ENABLE = 0x000A;
        public const int WM_SETREDRAW = 0x000B;
        public const int WM_SETTEXT = 0x000C;
        public const int WM_GETTEXT = 0x000D;
        public const int WM_GETTEXTLENGTH = 0x000E;
        public const int WM_PAINT = 0x000F;
        public const int WM_CLOSE = 0x0010;
        public const int WM_QUERYENDSESSION = 0x0011;
        public const int WM_QUERYOPEN = 0x0013;
        public const int WM_ENDSESSION = 0x0016;
        public const int WM_QUIT = 0x0012;
        public const int WM_ERASEBKGND = 0x0014;
        public const int WM_SYSCOLORCHANGE = 0x0015;
        public const int WM_SHOWWINDOW = 0x0018;
        public const int WM_WININICHANGE = 0x001A;
        public const int WM_SETTINGCHANGE = WM_WININICHANGE;
        public const int WM_DEVMODECHANGE = 0x001B;
        public const int WM_ACTIVATEAPP = 0x001C;
        public const int WM_FONTCHANGE = 0x001D;
        public const int WM_TIMECHANGE = 0x001E;
        public const int WM_CANCELMODE = 0x001F;
        public const int WM_SETCURSOR = 0x0020;
        public const int WM_MOUSEACTIVATE = 0x0021;
        public const int WM_CHILDACTIVATE = 0x0022;
        public const int WM_QUEUESYNC = 0x0023;
        public const int WM_GETMINMAXINFO = 0x0024;
        public const int WM_PAINTICON = 0x0026;
        public const int WM_ICONERASEBKGND = 0x0027;
        public const int WM_NEXTDLGCTL = 0x0028;
        public const int WM_SPOOLERSTATUS = 0x002A;
        public const int WM_DRAWITEM = 0x002B;
        public const int WM_MEASUREITEM = 0x002C;
        public const int WM_DELETEITEM = 0x002D;
        public const int WM_VKEYTOITEM = 0x002E;
        public const int WM_CHARTOITEM = 0x002F;
        public const int WM_SETFONT = 0x0030;
        public const int WM_GETFONT = 0x0031;
        public const int WM_SETHOTKEY = 0x0032;
        public const int WM_GETHOTKEY = 0x0033;
        public const int WM_QUERYDRAGICON = 0x0037;
        public const int WM_COMPAREITEM = 0x0039;
        public const int WM_GETOBJECT = 0x003D;
        public const int WM_COMPACTING = 0x0041;
        public const int WM_COMMNOTIFY = 0x0044;
        public const int WM_WINDOWPOSCHANGING = 0x0046;
        public const int WM_WINDOWPOSCHANGED = 0x0047;
        public const int WM_POWER = 0x0048;
        public const int WM_COPYDATA = 0x004A;
        public const int WM_CANCELJOURNAL = 0x004B;
        public const int WM_NOTIFY = 0x004E;
        public const int WM_INPUTLANGCHANGEREQUEST = 0x0050;
        public const int WM_INPUTLANGCHANGE = 0x0051;
        public const int WM_TCARD = 0x0052;
        public const int WM_HELP = 0x0053;
        public const int WM_USERCHANGED = 0x0054;
        public const int WM_NOTIFYFORMAT = 0x0055;
        public const int WM_CONTEXTMENU = 0x007B;
        public const int WM_STYLECHANGING = 0x007C;
        public const int WM_STYLECHANGED = 0x007D;
        public const int WM_DISPLAYCHANGE = 0x007E;
        public const int WM_GETICON = 0x007F;
        public const int WM_SETICON = 0x0080;
        public const int WM_NCCREATE = 0x0081;
        public const int WM_NCDESTROY = 0x0082;
        public const int WM_NCCALCSIZE = 0x0083;
        public const int WM_NCHITTEST = 0x0084;
        public const int WM_NCPAINT = 0x0085;
        public const int WM_NCACTIVATE = 0x0086;
        public const int WM_GETDLGCODE = 0x0087;
        public const int WM_SYNCPAINT = 0x0088;

        public const int WM_NCMOUSEMOVE = 0x00A0;
        public const int WM_NCLBUTTONDOWN = 0x00A1;
        public const int WM_NCLBUTTONUP = 0x00A2;
        public const int WM_NCLBUTTONDBLCLK = 0x00A3;
        public const int WM_NCRBUTTONDOWN = 0x00A4;
        public const int WM_NCRBUTTONUP = 0x00A5;
        public const int WM_NCRBUTTONDBLCLK = 0x00A6;
        public const int WM_NCMBUTTONDOWN = 0x00A7;
        public const int WM_NCMBUTTONUP = 0x00A8;
        public const int WM_NCMBUTTONDBLCLK = 0x00A9;
        public const int WM_NCXBUTTONDOWN = 0x00AB;
        public const int WM_NCXBUTTONUP = 0x00AC;
        public const int WM_NCXBUTTONDBLCLK = 0x00AD;

        public const int WM_INPUT_DEVICE_CHANGE = 0x00FE;
        public const int WM_INPUT = 0x00FF;

        public const int WM_KEYFIRST = 0x0100;
        public const int WM_KEYDOWN = 0x0100;
        public const int WM_KEYUP = 0x0101;
        public const int WM_CHAR = 0x0102;
        public const int WM_DEADCHAR = 0x0103;
        public const int WM_SYSKEYDOWN = 0x0104;
        public const int WM_SYSKEYUP = 0x0105;
        public const int WM_SYSCHAR = 0x0106;
        public const int WM_SYSDEADCHAR = 0x0107;
        public const int WM_UNICHAR = 0x0109;
        public const int WM_KEYLAST = 0x0109;

        public const int WM_IME_STARTCOMPOSITION = 0x010D;
        public const int WM_IME_ENDCOMPOSITION = 0x010E;
        public const int WM_IME_COMPOSITION = 0x010F;
        public const int WM_IME_KEYLAST = 0x010F;

        public const int WM_INITDIALOG = 0x0110;
        public const int WM_COMMAND = 0x0111;
        public const int WM_SYSCOMMAND = 0x0112;
        public const int WM_TIMER = 0x0113;
        public const int WM_HSCROLL = 0x0114;
        public const int WM_VSCROLL = 0x0115;
        public const int WM_INITMENU = 0x0116;
        public const int WM_INITMENUPOPUP = 0x0117;
        public const int WM_MENUSELECT = 0x011F;
        public const int WM_MENUCHAR = 0x0120;
        public const int WM_ENTERIDLE = 0x0121;
        public const int WM_MENURBUTTONUP = 0x0122;
        public const int WM_MENUDRAG = 0x0123;
        public const int WM_MENUGETOBJECT = 0x0124;
        public const int WM_UNINITMENUPOPUP = 0x0125;
        public const int WM_MENUCOMMAND = 0x0126;

        public const int WM_CHANGEUISTATE = 0x0127;
        public const int WM_UPDATEUISTATE = 0x0128;
        public const int WM_QUERYUISTATE = 0x0129;

        public const int WM_CTLCOLORMSGBOX = 0x0132;
        public const int WM_CTLCOLOREDIT = 0x0133;
        public const int WM_CTLCOLORLISTBOX = 0x0134;
        public const int WM_CTLCOLORBTN = 0x0135;
        public const int WM_CTLCOLORDLG = 0x0136;
        public const int WM_CTLCOLORSCROLLBAR = 0x0137;
        public const int WM_CTLCOLORSTATIC = 0x0138;
        public const int MN_GETHMENU = 0x01E1;

        public const int WM_MOUSEFIRST = 0x0200;
        public const int WM_MOUSEMOVE = 0x0200;
        public const int WM_LBUTTONDOWN = 0x0201;
        public const int WM_LBUTTONUP = 0x0202;
        public const int WM_LBUTTONDBLCLK = 0x0203;
        public const int WM_RBUTTONDOWN = 0x0204;
        public const int WM_RBUTTONUP = 0x0205;
        public const int WM_RBUTTONDBLCLK = 0x0206;
        public const int WM_MBUTTONDOWN = 0x0207;
        public const int WM_MBUTTONUP = 0x0208;
        public const int WM_MBUTTONDBLCLK = 0x0209;
        public const int WM_MOUSEWHEEL = 0x020A;
        public const int WM_XBUTTONDOWN = 0x020B;
        public const int WM_XBUTTONUP = 0x020C;
        public const int WM_XBUTTONDBLCLK = 0x020D;
        public const int WM_MOUSEHWHEEL = 0x020E;

        public const int WM_PARENTNOTIFY = 0x0210;
        public const int WM_ENTERMENULOOP = 0x0211;
        public const int WM_EXITMENULOOP = 0x0212;

        public const int WM_NEXTMENU = 0x0213;
        public const int WM_SIZING = 0x0214;
        public const int WM_CAPTURECHANGED = 0x0215;
        public const int WM_MOVING = 0x0216;

        public const int WM_POWERBROADCAST = 0x0218;

        public const int WM_DEVICECHANGE = 0x0219;

        public const int WM_MDICREATE = 0x0220;
        public const int WM_MDIDESTROY = 0x0221;
        public const int WM_MDIACTIVATE = 0x0222;
        public const int WM_MDIRESTORE = 0x0223;
        public const int WM_MDINEXT = 0x0224;
        public const int WM_MDIMAXIMIZE = 0x0225;
        public const int WM_MDITILE = 0x0226;
        public const int WM_MDICASCADE = 0x0227;
        public const int WM_MDIICONARRANGE = 0x0228;
        public const int WM_MDIGETACTIVE = 0x0229;

        public const int WM_MDISETMENU = 0x0230;
        public const int WM_ENTERSIZEMOVE = 0x0231;
        public const int WM_EXITSIZEMOVE = 0x0232;
        public const int WM_DROPFILES = 0x0233;
        public const int WM_MDIREFRESHMENU = 0x0234;

        public const int WM_IME_SETCONTEXT = 0x0281;
        public const int WM_IME_NOTIFY = 0x0282;
        public const int WM_IME_CONTROL = 0x0283;
        public const int WM_IME_COMPOSITIONFULL = 0x0284;
        public const int WM_IME_SELECT = 0x0285;
        public const int WM_IME_CHAR = 0x0286;
        public const int WM_IME_REQUEST = 0x0288;
        public const int WM_IME_KEYDOWN = 0x0290;
        public const int WM_IME_KEYUP = 0x0291;

        public const int WM_MOUSEHOVER = 0x02A1;
        public const int WM_MOUSELEAVE = 0x02A3;
        public const int WM_NCMOUSEHOVER = 0x02A0;
        public const int WM_NCMOUSELEAVE = 0x02A2;

        public const int WM_WTSSESSION_CHANGE = 0x02B1;

        public const int WM_TABLET_FIRST = 0x02c0;
        public const int WM_TABLET_LAST = 0x02df;

        public const int WM_DPICHANGED = 0x02E0;

        public const int WM_CUT = 0x0300;
        public const int WM_COPY = 0x0301;
        public const int WM_PASTE = 0x0302;
        public const int WM_CLEAR = 0x0303;
        public const int WM_UNDO = 0x0304;
        public const int WM_RENDERFORMAT = 0x0305;
        public const int WM_RENDERALLFORMATS = 0x0306;
        public const int WM_DESTROYCLIPBOARD = 0x0307;
        public const int WM_DRAWCLIPBOARD = 0x0308;
        public const int WM_PAINTCLIPBOARD = 0x0309;
        public const int WM_VSCROLLCLIPBOARD = 0x030A;
        public const int WM_SIZECLIPBOARD = 0x030B;
        public const int WM_ASKCBFORMATNAME = 0x030C;
        public const int WM_CHANGECBCHAIN = 0x030D;
        public const int WM_HSCROLLCLIPBOARD = 0x030E;
        public const int WM_QUERYNEWPALETTE = 0x030F;
        public const int WM_PALETTEISCHANGING = 0x0310;
        public const int WM_PALETTECHANGED = 0x0311;
        public const int WM_HOTKEY = 0x0312;

        public const int WM_PRINT = 0x0317;
        public const int WM_PRINTCLIENT = 0x0318;

        public const int WM_APPCOMMAND = 0x0319;

        public const int WM_THEMECHANGED = 0x031A;

        public const int WM_CLIPBOARDUPDATE = 0x031D;

        public const int WM_DWMCOMPOSITIONCHANGED = 0x031E;
        public const int WM_DWMNCRENDERINGCHANGED = 0x031F;
        public const int WM_DWMCOLORIZATIONCOLORCHANGED = 0x0320;
        public const int WM_DWMWINDOWMAXIMIZEDCHANGE = 0x0321;

        public const int WM_GETTITLEBARINFOEX = 0x033F;

        public const int WM_HANDHELDFIRST = 0x0358;
        public const int WM_HANDHELDLAST = 0x035F;

        public const int WM_AFXFIRST = 0x0360;
        public const int WM_AFXLAST = 0x037F;

        public const int WM_PENWINFIRST = 0x0380;
        public const int WM_PENWINLAST = 0x038F;

        public const int WM_APP = 0x8000;

        public const int WM_USER = 0x0400;

        public const int WM_REFLECT = WM_USER + 0x1C00;

        public const int GWL_WNDPROC = -4;
        public const int GWL_HWNDPARENT = -8;
        public const int GWL_STYLE = -16;
        public const int GWL_EXSTYLE = -20;

        public const int WS_BORDER = 0x00800000; // The window has a thin-line border.
        public const int WS_CAPTION = 0x00C00000; // The window has a title bar (includes the WS_BORDER style).
        public const int WS_CHILD = 0x40000000; // The window is a child window. A window with this style cannot have a menu bar.
        public const int WS_CHILDWINDOW = 0x40000000; // Same as the WS_CHILD style.
        public const int WS_CLIPCHILDREN = 0x02000000; // Excludes the area occupied by child windows when drawing occurs within the parent window.
        public const int WS_CLIPSIBLINGS = 0x04000000; // Clips child windows relative to each other.
        public const int WS_DISABLED = 0x08000000; // The window is initially disabled. A disabled window cannot receive input from the user.
        public const int WS_DLGFRAME = 0x00400000; // The window has a border of a style typically used with dialog boxes. A window with this style cannot have a title bar.
        public const int WS_GROUP = 0x00020000; // The window is the first control of a group of controls.
        public const int WS_HSCROLL = 0x00100000; // The window has a horizontal scroll bar.
        public const int WS_ICONIC = 0x20000000; // The window is initially minimized. Same as the WS_MINIMIZE style.
        public const int WS_MAXIMIZE = 0x01000000; // The window is initially maximized.
        public const int WS_MAXIMIZEBOX = 0x00010000; // The window has a maximize button. Cannot be combined with the WS_EX_CONTEXTHELP style. The WS_SYSMENU style must also be specified. 
        public const int WS_MINIMIZE = 0x20000000; // The window is initially minimized. Same as the WS_ICONIC style.
        public const int WS_MINIMIZEBOX = 0x00020000; // The window has a minimize button. Cannot be combined with the WS_EX_CONTEXTHELP style. The WS_SYSMENU style must also be specified. 
        public const int WS_OVERLAPPED = 0x00000000; // The window is an overlapped window. An overlapped window has a title bar and a border. Same as the WS_TILED style.
        public const int WS_OVERLAPPEDWINDOW =
            WS_OVERLAPPED | WS_CAPTION | WS_SYSMENU | WS_THICKFRAME | WS_MINIMIZEBOX | WS_MAXIMIZEBOX; // The window is an overlapped window. Same as the WS_TILEDWINDOW style. 
        public const int WS_POPUP = -2147483648 /*0x80000000*/; //The windows is a pop-up window. This style cannot be used with the WS_CHILD style.
        public const int WS_POPUPWINDOW =
            WS_POPUP | WS_BORDER | WS_SYSMENU;              // The window is a pop-up window. The WS_CAPTION and WS_POPUPWINDOW styles must be combined to make the window menu visible.
        public const int WS_SIZEBOX = 0x00040000; // The window has a sizing border. Same as the WS_THICKFRAME style.
        public const int WS_SYSMENU = 0x00080000; // The window has a window menu on its title bar. The WS_CAPTION style must also be specified.
        public const int WS_TABSTOP = 0x00010000; // The window is a control that can receive the keyboard focus when the user presses the TAB key.
        public const int WS_THICKFRAME = 0x00040000; // The window has a sizing border. Same as the WS_SIZEBOX style.
        public const int WS_TILED = 0x00000000; // The window is an overlapped window. An overlapped window has a title bar and a border. Same as the WS_OVERLAPPED style. 
        public const int WS_TILEDWINDOW =
            WS_OVERLAPPED | WS_CAPTION | WS_SYSMENU | WS_THICKFRAME | WS_MINIMIZEBOX | WS_MAXIMIZEBOX; // The window is an overlapped window. Same as the WS_OVERLAPPEDWINDOW style. 
        public const int WS_VISIBLE = 0x10000000; // The window is initially visible.
        public const int WS_VSCROLL = 0x00200000; // The window has a vertical scroll bar.

        public const int WS_EX_TRANSPARENT = 0x00000020;
        public const int WS_EX_TOOLWINDOW = 0x00000080; // The window is intended to be used as a floating toolbar
        public const int WS_EX_APPWINDOW = 0x00040000; // Forces a top-level window onto the taskbar when the window is visible. 
        public const int WS_EX_COMPOSITED = 0x02000000;
        public const int WS_EX_LAYERED = 0x00080000;
        public const int WS_EX_NOACTIVATE = 0x08000000;

        // The child window created with this style does not send the WM_PARENTNOTIFY message to its parent window when it is created or destroyed.
        public const int WS_EX_NOPARENTNOTIFY = 0x00000004;

        public const int SW_HIDE = 0;
        public const int SW_SHOWNORMAL = 1;
        public const int SW_SHOWMINIMIZED = 2;
        public const int SW_SHOWMAXIMIZED = 3;
        public const int SW_MAXIMIZE = 3;
        public const int SW_SHOWNOACTIVATE = 4;
        public const int SW_SHOW = 5;
        public const int SW_MINIMIZE = 6;
        public const int SW_SHOWMINNOACTIVE = 7;
        public const int SW_SHOWNA = 8;
        public const int SW_RESTORE = 9;
        public static IntPtr HWND_TOP = new IntPtr(0);
        public static IntPtr HWND_BOTTOM = new IntPtr(1);
        public static IntPtr HWND_TOPMOST = new IntPtr(-1);
        public static IntPtr HWND_NOTOPMOST = new IntPtr(-2);

        public const int SWP_NOSIZE = 0x0001;
        public const int SWP_NOMOVE = 0x0002;
        public const int SWP_NOZORDER = 0x0004;
        public const int SWP_NOREDRAW = 0x0008;
        public const int SWP_NOACTIVATE = 0x0010;
        public const int SWP_SHOWWINDOW = 0x0040;
        public const int SWP_HIDEWINDOW = 0x0080;
        public const int SWP_NOCOPYBITS = 0x0100;
        public const int SWP_NOOWNERZORDER = 0x0200;
        public const int SWP_ASYNCWINDOWPOS = 0x4000;
        public const int SWP_STATECHANGED = 0x8000;

        public const int LWA_ALPHA = 0x2;
        public const int LWA_COLORKEY = 0x1;

        [DllImport("user32.dll")]
        public static extern IntPtr SetParent(IntPtr hWnd, IntPtr newParent);

        [DllImport("user32.dll")]
        [return: MarshalAs(UnmanagedType.Bool)]
        public static extern bool ShowWindow(IntPtr hWnd, int nCmdShow);

        [DllImport("user32.dll", CharSet = CharSet.Auto)]
        public static extern IntPtr SendMessage(IntPtr hWnd, int msg, IntPtr wParam, IntPtr lParam);

        [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = false)]
        public static extern int SendMessage(IntPtr hWnd, uint msg, IntPtr wParam, string lParam);

        [DllImport("user32.dll")]
        public static extern void PostQuitMessage(int nExitCode);

        public static string GetWindowCaption(IntPtr hWnd)
        {
            var textLength = GetWindowTextLength(hWnd);
            if (textLength <= 0)
            {
                return null;
            }
            var text = new StringBuilder(textLength + 1);
            var charsCopied = GetWindowText(hWnd, text, text.Capacity + 1);
            return (charsCopied > 0) ? text.ToString() : null;
        }

        public static void SetWindowCaption(IntPtr hWnd, string caption)
        {
            var text = caption ?? "";
            Win32.SendMessage(hWnd, Win32.WM_SETTEXT, IntPtr.Zero, text);
        }

        [DllImport("user32.dll", SetLastError = true, CharSet = CharSet.Auto)]
        public static extern int GetWindowTextLength(IntPtr hWnd);

        [DllImport("user32.dll", SetLastError = true, CharSet = CharSet.Auto)]
        public static extern int GetWindowText(IntPtr hWnd, StringBuilder lpClassName, int nMaxCount);

        public static Rectangle GetWindowBounds(IntPtr hWnd)
        {
            sRECT rect;
            if (GetWindowRect(hWnd, out rect))
            {
                return rect.ToRectangle();
            }
            return Rectangle.Empty;
        }

        public static void SetWindowBounds(IntPtr hWnd, Rectangle bounds)
        {
            SetWindowBounds(hWnd, bounds.X, bounds.Y, bounds.Width, bounds.Height);
        }

        public static void SetWindowBounds(IntPtr hWnd, int x, int y, int width, int height)
        {
            SetWindowPos(hWnd, IntPtr.Zero, x, y, width, height, SWP_NOZORDER | SWP_NOACTIVATE);
        }

        public static void SetWindowBounds(IntPtr hWnd, IntPtr insertAfter, Rectangle bounds)
        {
            SetWindowBounds(hWnd, insertAfter, bounds.X, bounds.Y, bounds.Width, bounds.Height);
        }

        public static void SetWindowBounds(IntPtr hWnd, IntPtr insertAfter, int x, int y, int width, int height)
        {
            SetWindowPos(hWnd, insertAfter, x, y, width, height, SWP_NOACTIVATE);
        }

        public static FormWindowState GetWindowState(IntPtr hWnd)
        {
            var result = FormWindowState.Normal;
            sWINDOWPLACEMENT placement = new sWINDOWPLACEMENT();
            placement.length = Marshal.SizeOf(placement);
            if (GetWindowPlacement(hWnd, ref placement))
            {
                var showCmd = placement.showCmd;
                if (showCmd == SW_SHOWMAXIMIZED)
                {
                    result = FormWindowState.Maximized;
                }
                else if (showCmd == SW_SHOWMINIMIZED)
                {
                    result = FormWindowState.Minimized;
                }
                else if (showCmd == SW_SHOWNORMAL)
                {
                    result = FormWindowState.Normal;
                }
            }
            return result;
        }

        public static int GetWindowStyles(IntPtr hwnd)
        {
            return (int)(GetWindowLong(hwnd, GWL_STYLE).ToInt64() & 0x00000000FFFFFFFF);
        }

        public static void SetWindowStyles(IntPtr hwnd, int styles)
        {
            SetWindowLong(hwnd, GWL_STYLE, styles);
        }

        public static int GetWindowExStyles(IntPtr hwnd)
        {
            return (int)(GetWindowLong(hwnd, GWL_EXSTYLE).ToInt64() & 0x00000000FFFFFFFF);
        }

        public static void SetWindowExStyles(IntPtr hwnd, int styles)
        {
            SetWindowLong(hwnd, GWL_EXSTYLE, styles);
        }

        [DllImport("user32.dll")]
        [return: MarshalAs(UnmanagedType.Bool)]
        public static extern bool GetWindowRect(IntPtr hWnd, out sRECT lpRect);

        [DllImport("user32.dll")]
        public static extern bool GetClientRect(IntPtr hWnd, out sRECT lpRect);

        [DllImport("user32.dll")]
        [return: MarshalAs(UnmanagedType.Bool)]
        public static extern bool GetWindowPlacement(IntPtr hWnd, ref sWINDOWPLACEMENT lpwndpl);

        [DllImport("user32.dll")]
        public static extern bool ClientToScreen(IntPtr hWnd, ref sPOINT lpPoint);

        [DllImport("user32.dll")]
        public static extern bool ScreenToClient(IntPtr hWnd, ref sPOINT lpPoint);

        [DllImport("user32.dll", SetLastError = true)]
        public static extern IntPtr SetWindowPos(IntPtr hWnd, IntPtr hWndInsertAfter, int x, int y, int cx, int cy, int wFlags);

        [DllImport("user32.dll")]
        public extern static bool GetUpdateRect(IntPtr hWnd, out sRECT rect, bool bErase);

        [DllImport("user32.dll")]
        public static extern IntPtr BeginPaint(IntPtr hwnd, out sPAINTSTRUCT lpPaint);

        [DllImport("user32.dll")]
        public static extern bool EndPaint(IntPtr hWnd, [In] ref sPAINTSTRUCT lpPaint);

        [DllImport("User32.dll", SetLastError = true)]
        public static extern IntPtr GetDC(IntPtr hWnd);

        [DllImport("User32.dll", SetLastError = true)]
        [return: MarshalAs(UnmanagedType.Bool)]
        public static extern bool ReleaseDC(IntPtr hWnd, IntPtr hDC);

        public static IntPtr GetWindowLong(IntPtr hWnd, int nIndex)
        {
            if (IntPtr.Size == 4)
            {
                return GetWindowLong32(hWnd, nIndex);
            }
            else
            {
                return GetWindowLongPtr64(hWnd, nIndex);
            }
        }

        [DllImport("user32.dll", EntryPoint = "GetWindowLong", CharSet = CharSet.Auto)]
        public static extern IntPtr GetWindowLong32(IntPtr hWnd, int nIndex);

        [DllImport("user32.dll", EntryPoint = "GetWindowLongPtr", CharSet = CharSet.Auto)]
        public static extern IntPtr GetWindowLongPtr64(IntPtr hWnd, int nIndex);

        public static IntPtr SetWindowLong(IntPtr hWnd, int nIndex, IntPtr data)
        {
            if (IntPtr.Size == 4)
            {
                return SetWindowLongPtr32(hWnd, nIndex, data);
            }
            else
            {
                return SetWindowLongPtr64(hWnd, nIndex, data);
            }
        }

        [DllImport("user32.dll", EntryPoint = "SetWindowLong", CharSet = CharSet.Auto)]
        public static extern IntPtr SetWindowLongPtr32(IntPtr hWnd, int nIndex, IntPtr data);

        [DllImport("user32.dll", EntryPoint = "SetWindowLongPtr", CharSet = CharSet.Auto)]
        public static extern IntPtr SetWindowLongPtr64(IntPtr hWnd, int nIndex, IntPtr data);

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

        [DllImport("user32.dll", CharSet = CharSet.Auto)]
        public static extern bool IsChild(IntPtr hWndParent, IntPtr hWnd);

        [DllImport("user32.dll")]
        public static extern IntPtr WindowFromPoint(sPOINT point);

        [DllImport("user32.dll")]
        public static extern bool SetLayeredWindowAttributes(IntPtr hwnd, int crKey, byte bAlpha, uint dwFlags);

        [DllImport("oleacc.dll", ExactSpelling = true, CharSet = CharSet.Auto)]
        public static extern int CreateStdAccessibleObject(HandleRef handleRef, int objID, ref Guid refiid, [In, Out, MarshalAs(UnmanagedType.Interface)] ref object pAcc);

        [DllImport("oleacc.dll", ExactSpelling = true, CharSet = CharSet.Auto)]
        public static extern IntPtr LresultFromObject(ref Guid refiid, IntPtr wParam, HandleRef pAcc);
    }
}