using System;
using System.Collections.Generic;
using System.Text;
using System.Reflection;
using System.Runtime.InteropServices;

namespace CPF.Linux
{
    [StructLayout(LayoutKind.Sequential)]
    public struct XIMValuesList
    {
        /// unsigned short
        public ushort count_values;

        /// char**
        public IntPtr supported_values;
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct XAnyEvent
    {
        public XEventName type;
        public IntPtr serial;
        public bool send_event;
        public IntPtr display;
        public IntPtr window;
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct XKeyEvent
    {
        public XEventName type;
        public IntPtr serial;
        public bool send_event;
        public IntPtr display;
        public IntPtr window;
        public IntPtr root;
        public IntPtr subwindow;
        public IntPtr time;
        public int x;
        public int y;
        public int x_root;
        public int y_root;
        public XModifierMask state;
        public int keycode;
        public bool same_screen;
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct XButtonEvent
    {
        public XEventName type;
        public IntPtr serial;
        public bool send_event;
        public IntPtr display;
        public IntPtr window;
        public IntPtr root;
        public IntPtr subwindow;
        public IntPtr time;
        public int x;
        public int y;
        public int x_root;
        public int y_root;
        public XModifierMask state;
        public int button;
        public bool same_screen;
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct XMotionEvent
    {
        public XEventName type;
        public IntPtr serial;
        public bool send_event;
        public IntPtr display;
        public IntPtr window;
        public IntPtr root;
        public IntPtr subwindow;
        public IntPtr time;
        public int x;
        public int y;
        public int x_root;
        public int y_root;
        public XModifierMask state;
        public byte is_hint;
        public bool same_screen;
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct XCrossingEvent
    {
        public XEventName type;
        public IntPtr serial;
        public bool send_event;
        public IntPtr display;
        public IntPtr window;
        public IntPtr root;
        public IntPtr subwindow;
        public IntPtr time;
        public int x;
        public int y;
        public int x_root;
        public int y_root;
        public NotifyMode mode;
        public NotifyDetail detail;
        public bool same_screen;
        public bool focus;
        public XModifierMask state;
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct XFocusChangeEvent
    {
        public XEventName type;
        public IntPtr serial;
        public bool send_event;
        public IntPtr display;
        public IntPtr window;
        public int mode;
        public NotifyDetail detail;
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct XKeymapEvent
    {
        public XEventName type;
        public IntPtr serial;
        public bool send_event;
        public IntPtr display;
        public IntPtr window;
        public byte key_vector0;
        public byte key_vector1;
        public byte key_vector2;
        public byte key_vector3;
        public byte key_vector4;
        public byte key_vector5;
        public byte key_vector6;
        public byte key_vector7;
        public byte key_vector8;
        public byte key_vector9;
        public byte key_vector10;
        public byte key_vector11;
        public byte key_vector12;
        public byte key_vector13;
        public byte key_vector14;
        public byte key_vector15;
        public byte key_vector16;
        public byte key_vector17;
        public byte key_vector18;
        public byte key_vector19;
        public byte key_vector20;
        public byte key_vector21;
        public byte key_vector22;
        public byte key_vector23;
        public byte key_vector24;
        public byte key_vector25;
        public byte key_vector26;
        public byte key_vector27;
        public byte key_vector28;
        public byte key_vector29;
        public byte key_vector30;
        public byte key_vector31;
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct XExposeEvent
    {
        public XEventName type;
        public IntPtr serial;
        public bool send_event;
        public IntPtr display;
        public IntPtr window;
        public int x;
        public int y;
        public int width;
        public int height;
        public int count;
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct XGraphicsExposeEvent
    {
        public XEventName type;
        public IntPtr serial;
        public bool send_event;
        public IntPtr display;
        public IntPtr drawable;
        public int x;
        public int y;
        public int width;
        public int height;
        public int count;
        public int major_code;
        public int minor_code;
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct XNoExposeEvent
    {
        public XEventName type;
        public IntPtr serial;
        public bool send_event;
        public IntPtr display;
        public IntPtr drawable;
        public int major_code;
        public int minor_code;
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct XVisibilityEvent
    {
        public XEventName type;
        public IntPtr serial;
        public bool send_event;
        public IntPtr display;
        public IntPtr window;
        public int state;
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct XCreateWindowEvent
    {
        public XEventName type;
        public IntPtr serial;
        public bool send_event;
        public IntPtr display;
        public IntPtr parent;
        public IntPtr window;
        public int x;
        public int y;
        public int width;
        public int height;
        public int border_width;
        public bool override_redirect;
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct XDestroyWindowEvent
    {
        public XEventName type;
        public IntPtr serial;
        public bool send_event;
        public IntPtr display;
        public IntPtr xevent;
        public IntPtr window;
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct XUnmapEvent
    {
        public XEventName type;
        public IntPtr serial;
        public bool send_event;
        public IntPtr display;
        public IntPtr xevent;
        public IntPtr window;
        public bool from_configure;
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct XMapEvent
    {
        public XEventName type;
        public IntPtr serial;
        public bool send_event;
        public IntPtr display;
        public IntPtr xevent;
        public IntPtr window;
        public bool override_redirect;
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct XMapRequestEvent
    {
        public XEventName type;
        public IntPtr serial;
        public bool send_event;
        public IntPtr display;
        public IntPtr parent;
        public IntPtr window;
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct XReparentEvent
    {
        public XEventName type;
        public IntPtr serial;
        public bool send_event;
        public IntPtr display;
        public IntPtr xevent;
        public IntPtr window;
        public IntPtr parent;
        public int x;
        public int y;
        public bool override_redirect;
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct XConfigureEvent
    {
        public XEventName type;
        public IntPtr serial;
        public bool send_event;
        public IntPtr display;
        public IntPtr xevent;
        public IntPtr window;
        public int x;
        public int y;
        public int width;
        public int height;
        public int border_width;
        public IntPtr above;
        public bool override_redirect;
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct XGravityEvent
    {
        public XEventName type;
        public IntPtr serial;
        public bool send_event;
        public IntPtr display;
        public IntPtr xevent;
        public IntPtr window;
        public int x;
        public int y;
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct XResizeRequestEvent
    {
        public XEventName type;
        public IntPtr serial;
        public bool send_event;
        public IntPtr display;
        public IntPtr window;
        public int width;
        public int height;
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct XConfigureRequestEvent
    {
        public XEventName type;
        public IntPtr serial;
        public bool send_event;
        public IntPtr display;
        public IntPtr parent;
        public IntPtr window;
        public int x;
        public int y;
        public int width;
        public int height;
        public int border_width;
        public IntPtr above;
        public int detail;
        public IntPtr value_mask;
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct XCirculateEvent
    {
        public XEventName type;
        public IntPtr serial;
        public bool send_event;
        public IntPtr display;
        public IntPtr xevent;
        public IntPtr window;
        public int place;
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct XCirculateRequestEvent
    {
        public XEventName type;
        public IntPtr serial;
        public bool send_event;
        public IntPtr display;
        public IntPtr parent;
        public IntPtr window;
        public int place;
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct XPropertyEvent
    {
        public XEventName type;
        public IntPtr serial;
        public bool send_event;
        public IntPtr display;
        public IntPtr window;
        public IntPtr atom;
        public IntPtr time;
        public int state;
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct XSelectionClearEvent
    {
        public XEventName type;
        public IntPtr serial;
        public bool send_event;
        public IntPtr display;
        public IntPtr window;
        public IntPtr selection;
        public IntPtr time;
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct XSelectionRequestEvent
    {
        public XEventName type;
        public IntPtr serial;
        public bool send_event;
        public IntPtr display;
        public IntPtr owner;
        public IntPtr requestor;
        public IntPtr selection;
        public IntPtr target;
        public IntPtr property;
        public IntPtr time;
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct XSelectionEvent
    {
        public XEventName type;
        public IntPtr serial;
        public bool send_event;
        public IntPtr display;
        public IntPtr requestor;
        public IntPtr selection;
        public IntPtr target;
        public IntPtr property;
        public IntPtr time;
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct XColormapEvent
    {
        public XEventName type;
        public IntPtr serial;
        public bool send_event;
        public IntPtr display;
        public IntPtr window;
        public IntPtr colormap;
        public bool c_new;
        public int state;
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct XClientMessageEvent
    {
        public XEventName type;
        public IntPtr serial;
        public bool send_event;
        public IntPtr display;
        public IntPtr window;
        public IntPtr message_type;
        public int format;
        public IntPtr ptr1;
        public IntPtr ptr2;
        public IntPtr ptr3;
        public IntPtr ptr4;
        public IntPtr ptr5;
    }
    //[StructLayout(LayoutKind.Sequential)]
    //public unsafe struct XClientMessageEvent
    //{
    //    public XEventName type;
    //    public long serial;
    //    public bool send_event;
    //    public IntPtr display;
    //    public IntPtr window;
    //    public IntPtr message_type;
    //    public int format;
    //    public _data data;

    //    [System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Explicit)]
    //    public struct _data
    //    {
    //        [FieldOffset(0)]
    //        public fixed sbyte b[20];

    //        [FieldOffset(0)]
    //        public fixed short s[10];

    //        [FieldOffset(0)]
    //        public _l_e__FixedBuffer l;


    //        public struct _l_e__FixedBuffer
    //        {
    //            internal IntPtr ptr1;
    //            internal IntPtr ptr2;
    //            internal IntPtr ptr3;
    //            internal IntPtr ptr4;
    //            internal IntPtr ptr5;
    //        }
    //    }
    //}

    [StructLayout(LayoutKind.Sequential)]
    public struct XMappingEvent
    {
        public XEventName type;
        public IntPtr serial;
        public bool send_event;
        public IntPtr display;
        public IntPtr window;
        public int request;
        public int first_keycode;
        public int count;
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct XErrorEvent
    {
        public XEventName type;
        public IntPtr display;
        public IntPtr resourceid;
        public IntPtr serial;
        public byte error_code;
        public XRequest request_code;
        public byte minor_code;
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct XEventPad
    {
        public IntPtr pad0;
        public IntPtr pad1;
        public IntPtr pad2;
        public IntPtr pad3;
        public IntPtr pad4;
        public IntPtr pad5;
        public IntPtr pad6;
        public IntPtr pad7;
        public IntPtr pad8;
        public IntPtr pad9;
        public IntPtr pad10;
        public IntPtr pad11;
        public IntPtr pad12;
        public IntPtr pad13;
        public IntPtr pad14;
        public IntPtr pad15;
        public IntPtr pad16;
        public IntPtr pad17;
        public IntPtr pad18;
        public IntPtr pad19;
        public IntPtr pad20;
        public IntPtr pad21;
        public IntPtr pad22;
        public IntPtr pad23;
    }

    [StructLayout(LayoutKind.Sequential)]
    public unsafe struct XGenericEventCookie
    {
        public int type; /* of event. Always GenericEvent */
        public IntPtr serial; /* # of last request processed */
        public bool send_event; /* true if from SendEvent request */
        public IntPtr display; /* Display the event was read from */
        public int extension; /* major opcode of extension that caused the event */
        public int evtype; /* actual event type. */
        public uint cookie;
        public void* data;

        public T GetEvent<T>() where T : unmanaged
        {
            if (data == null)
                throw new InvalidOperationException();
            return *(T*)data;
        }
    }

    [StructLayout(LayoutKind.Explicit)]
    public struct XEvent
    {
        [FieldOffset(0)] public XEventName type;
        [FieldOffset(0)] public XAnyEvent AnyEvent;
        [FieldOffset(0)] public XKeyEvent KeyEvent;
        [FieldOffset(0)] public XButtonEvent ButtonEvent;
        [FieldOffset(0)] public XMotionEvent MotionEvent;
        [FieldOffset(0)] public XCrossingEvent CrossingEvent;
        [FieldOffset(0)] public XFocusChangeEvent FocusChangeEvent;
        [FieldOffset(0)] public XExposeEvent ExposeEvent;
        [FieldOffset(0)] public XGraphicsExposeEvent GraphicsExposeEvent;
        [FieldOffset(0)] public XNoExposeEvent NoExposeEvent;
        [FieldOffset(0)] public XVisibilityEvent VisibilityEvent;
        [FieldOffset(0)] public XCreateWindowEvent CreateWindowEvent;
        [FieldOffset(0)] public XDestroyWindowEvent DestroyWindowEvent;
        [FieldOffset(0)] public XUnmapEvent UnmapEvent;
        [FieldOffset(0)] public XMapEvent MapEvent;
        [FieldOffset(0)] public XMapRequestEvent MapRequestEvent;
        [FieldOffset(0)] public XReparentEvent ReparentEvent;
        [FieldOffset(0)] public XConfigureEvent ConfigureEvent;
        [FieldOffset(0)] public XGravityEvent GravityEvent;
        [FieldOffset(0)] public XResizeRequestEvent ResizeRequestEvent;
        [FieldOffset(0)] public XConfigureRequestEvent ConfigureRequestEvent;
        [FieldOffset(0)] public XCirculateEvent CirculateEvent;
        [FieldOffset(0)] public XCirculateRequestEvent CirculateRequestEvent;
        [FieldOffset(0)] public XPropertyEvent PropertyEvent;
        [FieldOffset(0)] public XSelectionClearEvent SelectionClearEvent;
        [FieldOffset(0)] public XSelectionRequestEvent SelectionRequestEvent;
        [FieldOffset(0)] public XSelectionEvent SelectionEvent;
        [FieldOffset(0)] public XColormapEvent ColormapEvent;
        [FieldOffset(0)] public XClientMessageEvent ClientMessageEvent;
        [FieldOffset(0)] public XMappingEvent MappingEvent;
        [FieldOffset(0)] public XErrorEvent ErrorEvent;
        [FieldOffset(0)] public XKeymapEvent KeymapEvent;
        [FieldOffset(0)] public XGenericEventCookie GenericEventCookie;

        //[MarshalAs(System.Runtime.InteropServices.UnmanagedType.ByValArray, SizeConst=24)]
        //[ FieldOffset(0) ] public int[] pad;
        [FieldOffset(0)] public XEventPad Pad;
        public override string ToString()
        {
            switch (type)
            {
                case XEventName.ButtonPress:
                case XEventName.ButtonRelease:
                    return ToString(ButtonEvent);
                case XEventName.CirculateNotify:
                case XEventName.CirculateRequest:
                    return ToString(CirculateEvent);
                case XEventName.ClientMessage:
                    return ToString(ClientMessageEvent);
                case XEventName.ColormapNotify:
                    return ToString(ColormapEvent);
                case XEventName.ConfigureNotify:
                    return ToString(ConfigureEvent);
                case XEventName.ConfigureRequest:
                    return ToString(ConfigureRequestEvent);
                case XEventName.CreateNotify:
                    return ToString(CreateWindowEvent);
                case XEventName.DestroyNotify:
                    return ToString(DestroyWindowEvent);
                case XEventName.Expose:
                    return ToString(ExposeEvent);
                case XEventName.FocusIn:
                case XEventName.FocusOut:
                    return ToString(FocusChangeEvent);
                case XEventName.GraphicsExpose:
                    return ToString(GraphicsExposeEvent);
                case XEventName.GravityNotify:
                    return ToString(GravityEvent);
                case XEventName.KeymapNotify:
                    return ToString(KeymapEvent);
                case XEventName.MapNotify:
                    return ToString(MapEvent);
                case XEventName.MappingNotify:
                    return ToString(MappingEvent);
                case XEventName.MapRequest:
                    return ToString(MapRequestEvent);
                case XEventName.MotionNotify:
                    return ToString(MotionEvent);
                case XEventName.NoExpose:
                    return ToString(NoExposeEvent);
                case XEventName.PropertyNotify:
                    return ToString(PropertyEvent);
                case XEventName.ReparentNotify:
                    return ToString(ReparentEvent);
                case XEventName.ResizeRequest:
                    return ToString(ResizeRequestEvent);
                case XEventName.SelectionClear:
                    return ToString(SelectionClearEvent);
                case XEventName.SelectionNotify:
                    return ToString(SelectionEvent);
                case XEventName.SelectionRequest:
                    return ToString(SelectionRequestEvent);
                case XEventName.UnmapNotify:
                    return ToString(UnmapEvent);
                case XEventName.VisibilityNotify:
                    return ToString(VisibilityEvent);
                case XEventName.EnterNotify:
                case XEventName.LeaveNotify:
                    return ToString(CrossingEvent);
                default:
                    return type.ToString();
            }
        }

        public static string ToString(object ev)
        {
            string result = string.Empty;
            Type type = ev.GetType();
            FieldInfo[] fields = type.GetFields(System.Reflection.BindingFlags.Public | System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Static | System.Reflection.BindingFlags.Instance);
            for (int i = 0; i < fields.Length; i++)
            {
                if (result != string.Empty)
                {
                    result += ", ";
                }
                object value = fields[i].GetValue(ev);
                result += fields[i].Name + "=" + (value == null ? "<null>" : value.ToString());
            }
            return type.Name + " (" + result + ")";
        }
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct XSetWindowAttributes
    {
        public IntPtr background_pixmap;
        public IntPtr background_pixel;
        public IntPtr border_pixmap;
        public IntPtr border_pixel;
        public Gravity bit_gravity;
        public Gravity win_gravity;
        public int backing_store;
        public IntPtr backing_planes;
        public IntPtr backing_pixel;
        public bool save_under;
        public IntPtr event_mask;
        public IntPtr do_not_propagate_mask;
        public bool override_redirect;
        public IntPtr colormap;
        public IntPtr cursor;
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct XWindowAttributes
    {
        public int x;
        public int y;
        public int width;
        public int height;
        public int border_width;
        public int depth;
        public IntPtr visual;
        public IntPtr root;
        public int c_class;
        public Gravity bit_gravity;
        public Gravity win_gravity;
        public int backing_store;
        public IntPtr backing_planes;
        public IntPtr backing_pixel;
        public bool save_under;
        public IntPtr colormap;
        public bool map_installed;
        public MapState map_state;
        public IntPtr all_event_masks;
        public IntPtr your_event_mask;
        public IntPtr do_not_propagate_mask;
        public bool override_direct;
        public IntPtr screen;

        public override string ToString()
        {
            return XEvent.ToString(this);
        }
    }

    [StructLayout(LayoutKind.Sequential)]
    public unsafe struct XTextProperty
    {
        public IntPtr value;
        public IntPtr encoding;
        public int format;
        public IntPtr nitems;
    }

    public enum XWindowClass
    {
        InputOutput = 1,
        InputOnly = 2
    }

    public enum XEventName
    {
        KeyPress = 2,
        KeyRelease = 3,
        ButtonPress = 4,
        ButtonRelease = 5,
        MotionNotify = 6,
        EnterNotify = 7,
        LeaveNotify = 8,
        FocusIn = 9,
        FocusOut = 10,
        KeymapNotify = 11,
        /// <summary>
        /// 绘制
        /// </summary>
        Expose = 12,
        GraphicsExpose = 13,
        NoExpose = 14,
        VisibilityNotify = 15,
        CreateNotify = 16,
        DestroyNotify = 17,
        UnmapNotify = 18,
        MapNotify = 19,
        MapRequest = 20,
        ReparentNotify = 21,
        ConfigureNotify = 22,
        ConfigureRequest = 23,
        GravityNotify = 24,
        ResizeRequest = 25,
        CirculateNotify = 26,
        CirculateRequest = 27,
        PropertyNotify = 28,
        SelectionClear = 29,
        SelectionRequest = 30,
        SelectionNotify = 31,
        ColormapNotify = 32,
        ClientMessage = 33,
        MappingNotify = 34,
        GenericEvent = 35,
        LASTEvent
    }

    [Flags]
    public enum SetWindowValuemask
    {
        Nothing = 0,
        BackPixmap = 1,
        BackPixel = 2,
        BorderPixmap = 4,
        BorderPixel = 8,
        BitGravity = 16,
        WinGravity = 32,
        BackingStore = 64,
        BackingPlanes = 128,
        BackingPixel = 256,
        OverrideRedirect = 512,
        SaveUnder = 1024,
        EventMask = 2048,
        DontPropagate = 4096,
        ColorMap = 8192,
        Cursor = 16384
    }

    public enum SendEventValues
    {
        PointerWindow = 0,
        InputFocus = 1
    }

    public enum CreateWindowArgs
    {
        CopyFromParent = 0,
        ParentRelative = 1,
        InputOutput = 1,
        InputOnly = 2
    }

    public enum Gravity
    {
        ForgetGravity = 0,
        NorthWestGravity = 1,
        NorthGravity = 2,
        NorthEastGravity = 3,
        WestGravity = 4,
        CenterGravity = 5,
        EastGravity = 6,
        SouthWestGravity = 7,
        SouthGravity = 8,
        SouthEastGravity = 9,
        StaticGravity = 10
    }

    public enum XKeySym : uint
    {
        XK_BackSpace = 0xFF08,
        XK_Tab = 0xFF09,
        XK_Clear = 0xFF0B,
        XK_Return = 0xFF0D,
        XK_Home = 0xFF50,
        XK_Left = 0xFF51,
        XK_Up = 0xFF52,
        XK_Right = 0xFF53,
        XK_Down = 0xFF54,
        XK_Page_Up = 0xFF55,
        XK_Page_Down = 0xFF56,
        XK_End = 0xFF57,
        XK_Begin = 0xFF58,
        XK_Menu = 0xFF67,
        XK_Shift_L = 0xFFE1,
        XK_Shift_R = 0xFFE2,
        XK_Control_L = 0xFFE3,
        XK_Control_R = 0xFFE4,
        XK_Caps_Lock = 0xFFE5,
        XK_Shift_Lock = 0xFFE6,
        XK_Meta_L = 0xFFE7,
        XK_Meta_R = 0xFFE8,
        XK_Alt_L = 0xFFE9,
        XK_Alt_R = 0xFFEA,
        XK_Super_L = 0xFFEB,
        XK_Super_R = 0xFFEC,
        XK_Hyper_L = 0xFFED,
        XK_Hyper_R = 0xFFEE,
    }

    [Flags]
    public enum EventMask
    {
        NoEventMask = 0,
        KeyPressMask = 1 << 0,
        KeyReleaseMask = 1 << 1,
        ButtonPressMask = 1 << 2,
        ButtonReleaseMask = 1 << 3,
        EnterWindowMask = 1 << 4,
        LeaveWindowMask = 1 << 5,
        PointerMotionMask = 1 << 6,
        PointerMotionHintMask = 1 << 7,
        Button1MotionMask = 1 << 8,
        Button2MotionMask = 1 << 9,
        Button3MotionMask = 1 << 10,
        Button4MotionMask = 1 << 11,
        Button5MotionMask = 1 << 12,
        ButtonMotionMask = 1 << 13,
        KeymapStateMask = 1 << 14,
        ExposureMask = 1 << 15,
        VisibilityChangeMask = 1 << 16,
        StructureNotifyMask = 1 << 17,
        ResizeRedirectMask = 1 << 18,
        SubstructureNotifyMask = 1 << 19,
        SubstructureRedirectMask = 1 << 20,
        FocusChangeMask = 1 << 21,
        PropertyChangeMask = 1 << 22,
        ColormapChangeMask = 1 << 23,
        OwnerGrabButtonMask = 1 << 24
    }

    [Flags]
    public enum RandrEventMask
    {
        RRScreenChangeNotify = 1 << 0,

        /* V1.2 additions */
        RRCrtcChangeNotifyMask = 1 << 1,
        RROutputChangeNotifyMask = 1 << 2,
        RROutputPropertyNotifyMask = 1 << 3,

        /* V1.4 additions */
        RRProviderChangeNotifyMask = 1 << 4,
        RRProviderPropertyNotifyMask = 1 << 5,
        RRResourceChangeNotifyMask = 1 << 6,

        /* V1.6 additions */
        RRLeaseNotifyMask = 1 << 7
    }

    public enum RandrEvent
    {
        RRScreenChangeNotify = 0,

        /* V1.2 additions */
        RRNotify = 1
    }

    public enum RandrRotate
    {
        /* used in the rotation field; rotation and reflection in 0.1 proto. */
        RR_Rotate_0 = 1,
        RR_Rotate_90 = 2,
        RR_Rotate_180 = 4,
        RR_Rotate_270 = 8
    }

    public enum GrabMode
    {
        GrabModeSync = 0,
        GrabModeAsync = 1
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct XStandardColormap
    {
        public IntPtr colormap;
        public IntPtr red_max;
        public IntPtr red_mult;
        public IntPtr green_max;
        public IntPtr green_mult;
        public IntPtr blue_max;
        public IntPtr blue_mult;
        public IntPtr base_pixel;
        public IntPtr visualid;
        public IntPtr killid;
    }

    [StructLayout(LayoutKind.Sequential, Pack = 2)]
    public struct XColor
    {
        public IntPtr pixel;
        public ushort red;
        public ushort green;
        public ushort blue;
        public byte flags;
        public byte pad;
    }

    public enum Atom
    {
        AnyPropertyType = 0,
        XA_PRIMARY = 1,
        XA_SECONDARY = 2,
        XA_ARC = 3,
        XA_ATOM = 4,
        XA_BITMAP = 5,
        XA_CARDINAL = 6,
        XA_COLORMAP = 7,
        XA_CURSOR = 8,
        XA_CUT_BUFFER0 = 9,
        XA_CUT_BUFFER1 = 10,
        XA_CUT_BUFFER2 = 11,
        XA_CUT_BUFFER3 = 12,
        XA_CUT_BUFFER4 = 13,
        XA_CUT_BUFFER5 = 14,
        XA_CUT_BUFFER6 = 15,
        XA_CUT_BUFFER7 = 16,
        XA_DRAWABLE = 17,
        XA_FONT = 18,
        XA_INTEGER = 19,
        XA_PIXMAP = 20,
        XA_POINT = 21,
        XA_RECTANGLE = 22,
        XA_RESOURCE_MANAGER = 23,
        XA_RGB_COLOR_MAP = 24,
        XA_RGB_BEST_MAP = 25,
        XA_RGB_BLUE_MAP = 26,
        XA_RGB_DEFAULT_MAP = 27,
        XA_RGB_GRAY_MAP = 28,
        XA_RGB_GREEN_MAP = 29,
        XA_RGB_RED_MAP = 30,
        XA_STRING = 31,
        XA_VISUALID = 32,
        XA_WINDOW = 33,
        XA_WM_COMMAND = 34,
        XA_WM_HINTS = 35,
        XA_WM_CLIENT_MACHINE = 36,
        XA_WM_ICON_NAME = 37,
        XA_WM_ICON_SIZE = 38,
        XA_WM_NAME = 39,
        XA_WM_NORMAL_HINTS = 40,
        XA_WM_SIZE_HINTS = 41,
        XA_WM_ZOOM_HINTS = 42,
        XA_MIN_SPACE = 43,
        XA_NORM_SPACE = 44,
        XA_MAX_SPACE = 45,
        XA_END_SPACE = 46,
        XA_SUPERSCRIPT_X = 47,
        XA_SUPERSCRIPT_Y = 48,
        XA_SUBSCRIPT_X = 49,
        XA_SUBSCRIPT_Y = 50,
        XA_UNDERLINE_POSITION = 51,
        XA_UNDERLINE_THICKNESS = 52,
        XA_STRIKEOUT_ASCENT = 53,
        XA_STRIKEOUT_DESCENT = 54,
        XA_ITALIC_ANGLE = 55,
        XA_X_HEIGHT = 56,
        XA_QUAD_WIDTH = 57,
        XA_WEIGHT = 58,
        XA_POINT_SIZE = 59,
        XA_RESOLUTION = 60,
        XA_COPYRIGHT = 61,
        XA_NOTICE = 62,
        XA_FONT_NAME = 63,
        XA_FAMILY_NAME = 64,
        XA_FULL_NAME = 65,
        XA_CAP_HEIGHT = 66,
        XA_WM_CLASS = 67,
        XA_WM_TRANSIENT_FOR = 68,

        XA_LAST_PREDEFINED = 68
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct XScreen
    {
        public IntPtr ext_data;
        public IntPtr display;
        public IntPtr root;
        public int width;
        public int height;
        public int mwidth;
        public int mheight;
        public int ndepths;
        public IntPtr depths;
        public int root_depth;
        public IntPtr root_visual;
        public IntPtr default_gc;
        public IntPtr cmap;
        public IntPtr white_pixel;
        public IntPtr black_pixel;
        public int max_maps;
        public int min_maps;
        public int backing_store;
        public bool save_unders;
        public IntPtr root_input_mask;
    }

    [Flags]
    public enum ChangeWindowFlags
    {
        CWX = 1 << 0,
        CWY = 1 << 1,
        CWWidth = 1 << 2,
        CWHeight = 1 << 3,
        CWBorderWidth = 1 << 4,
        CWSibling = 1 << 5,
        CWStackMode = 1 << 6
    }

    public enum StackMode
    {
        Above = 0,
        Below = 1,
        TopIf = 2,
        BottomIf = 3,
        Opposite = 4
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct XWindowChanges
    {
        public int x;
        public int y;
        public int width;
        public int height;
        public int border_width;
        public IntPtr sibling;
        public StackMode stack_mode;
    }

    [Flags]
    public enum ColorFlags
    {
        DoRed = 1 << 0,
        DoGreen = 1 << 1,
        DoBlue = 1 << 2
    }

    public enum NotifyMode
    {
        NotifyNormal = 0,
        NotifyGrab = 1,
        NotifyUngrab = 2
    }

    public enum NotifyDetail
    {
        NotifyAncestor = 0,
        NotifyVirtual = 1,
        NotifyInferior = 2,
        NotifyNonlinear = 3,
        NotifyNonlinearVirtual = 4,
        NotifyPointer = 5,
        NotifyPointerRoot = 6,
        NotifyDetailNone = 7
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct MotifWmHints
    {
        public IntPtr flags;
        public IntPtr functions;
        public IntPtr decorations;
        public IntPtr input_mode;
        public IntPtr status;

        public override string ToString()
        {
            return string.Format("MotifWmHints <flags={0}, functions={1}, decorations={2}, input_mode={3}, status={4}", (MotifFlags)flags.ToInt32(), (MotifFunctions)functions.ToInt32(), (MotifDecorations)decorations.ToInt32(), (MotifInputMode)input_mode.ToInt32(), status.ToInt32());
        }
    }

    [Flags]
    public enum MotifFlags
    {
        Functions = 1,
        Decorations = 2,
        InputMode = 4,
        Status = 8
    }

    [Flags]
    public enum MotifFunctions
    {
        All = 0x01,
        Resize = 0x02,
        Move = 0x04,
        Minimize = 0x08,
        Maximize = 0x10,
        Close = 0x20
    }

    [Flags]
    public enum MotifDecorations
    {
        All = 0x01,
        Border = 0x02,
        ResizeH = 0x04,
        Title = 0x08,
        Menu = 0x10,
        Minimize = 0x20,
        Maximize = 0x40,

    }

    [Flags]
    public enum MotifInputMode
    {
        Modeless = 0,
        ApplicationModal = 1,
        SystemModal = 2,
        FullApplicationModal = 3
    }

    [Flags]
    public enum KeyMasks
    {
        ShiftMask = (1 << 0),
        LockMask = (1 << 1),
        ControlMask = (1 << 2),
        Mod1Mask = (1 << 3),
        Mod2Mask = (1 << 4),
        Mod3Mask = (1 << 5),
        Mod4Mask = (1 << 6),
        Mod5Mask = (1 << 7),

        ModMasks = Mod1Mask | Mod2Mask | Mod3Mask | Mod4Mask | Mod5Mask
    }

    [Flags]
    public enum MouseKeyMasks
    {
        Button1Mask = (1 << 8),
        Button2Mask = (1 << 9),
        Button3Mask = (1 << 10),
        Button4Mask = (1 << 11),
        Button5Mask = (1 << 12),
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct XModifierKeymap
    {
        public int max_keypermod;
        public IntPtr modifiermap;
    }

    public enum PropertyMode
    {
        Replace = 0,
        Prepend = 1,
        Append = 2
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct XKeyBoardState
    {
        public int key_click_percent;
        public int bell_percent;
        public uint bell_pitch, bell_duration;
        public IntPtr led_mask;
        public int global_auto_repeat;
        public AutoRepeats auto_repeats;

        [StructLayout(LayoutKind.Explicit)]
        public struct AutoRepeats
        {
            [FieldOffset(0)]
            public byte first;

            [FieldOffset(31)]
            public byte last;
        }
    }

    [Flags]
    public enum GCFunction
    {
        GCFunction = 1 << 0,
        GCPlaneMask = 1 << 1,
        GCForeground = 1 << 2,
        GCBackground = 1 << 3,
        GCLineWidth = 1 << 4,
        GCLineStyle = 1 << 5,
        GCCapStyle = 1 << 6,
        GCJoinStyle = 1 << 7,
        GCFillStyle = 1 << 8,
        GCFillRule = 1 << 9,
        GCTile = 1 << 10,
        GCStipple = 1 << 11,
        GCTileStipXOrigin = 1 << 12,
        GCTileStipYOrigin = 1 << 13,
        GCFont = 1 << 14,
        GCSubwindowMode = 1 << 15,
        GCGraphicsExposures = 1 << 16,
        GCClipXOrigin = 1 << 17,
        GCClipYOrigin = 1 << 18,
        GCClipMask = 1 << 19,
        GCDashOffset = 1 << 20,
        GCDashList = 1 << 21,
        GCArcMode = 1 << 22
    }

    public enum GCJoinStyle
    {
        JoinMiter = 0,
        JoinRound = 1,
        JoinBevel = 2
    }

    public enum GCLineStyle
    {
        LineSolid = 0,
        LineOnOffDash = 1,
        LineDoubleDash = 2
    }

    public enum GCCapStyle
    {
        CapNotLast = 0,
        CapButt = 1,
        CapRound = 2,
        CapProjecting = 3
    }

    public enum GCFillStyle
    {
        FillSolid = 0,
        FillTiled = 1,
        FillStippled = 2,
        FillOpaqueStppled = 3
    }

    public enum GCFillRule
    {
        EvenOddRule = 0,
        WindingRule = 1
    }

    public enum GCArcMode
    {
        ArcChord = 0,
        ArcPieSlice = 1
    }

    public enum GCSubwindowMode
    {
        ClipByChildren = 0,
        IncludeInferiors = 1
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct XGCValues
    {
        public GXFunction function;
        public IntPtr plane_mask;
        public IntPtr foreground;
        public IntPtr background;
        public int line_width;
        public GCLineStyle line_style;
        public GCCapStyle cap_style;
        public GCJoinStyle join_style;
        public GCFillStyle fill_style;
        public GCFillRule fill_rule;
        public GCArcMode arc_mode;
        public IntPtr tile;
        public IntPtr stipple;
        public int ts_x_origin;
        public int ts_y_origin;
        public IntPtr font;
        public GCSubwindowMode subwindow_mode;
        public bool graphics_exposures;
        public int clip_x_origin;
        public int clib_y_origin;
        public IntPtr clip_mask;
        public int dash_offset;
        public byte dashes;
    }

    public enum GXFunction
    {
        GXclear = 0x0,      /* 0 */
        GXand = 0x1,        /* src AND dst */
        GXandReverse = 0x2,     /* src AND NOT dst */
        GXcopy = 0x3,       /* src */
        GXandInverted = 0x4,        /* NOT src AND dst */
        GXnoop = 0x5,       /* dst */
        GXxor = 0x6,        /* src XOR dst */
        GXor = 0x7,     /* src OR dst */
        GXnor = 0x8,        /* NOT src AND NOT dst */
        GXequiv = 0x9,      /* NOT src XOR dst */
        GXinvert = 0xa,     /* NOT dst */
        GXorReverse = 0xb,      /* src OR NOT dst */
        GXcopyInverted = 0xc,       /* NOT src */
        GXorInverted = 0xd,     /* NOT src OR dst */
        GXnand = 0xe,       /* NOT src OR NOT dst */
        GXset = 0xf     /* 1 */
    }

    public enum NetWindowManagerState
    {
        Remove = 0,
        Add = 1,
        Toggle = 2
    }

    public enum RevertTo
    {
        None = 0,
        PointerRoot = 1,
        Parent = 2
    }

    public enum MapState
    {
        IsUnmapped = 0,
        IsUnviewable = 1,
        IsViewable = 2
    }

    public enum CursorFontShape
    {
        XC_X_cursor = 0,
        XC_arrow = 2,
        XC_based_arrow_down = 4,
        XC_based_arrow_up = 6,
        XC_boat = 8,
        XC_bogosity = 10,
        XC_bottom_left_corner = 12,
        XC_bottom_right_corner = 14,
        XC_bottom_side = 16,
        XC_bottom_tee = 18,
        XC_box_spiral = 20,
        XC_center_ptr = 22,

        XC_circle = 24,
        XC_clock = 26,
        XC_coffee_mug = 28,
        XC_cross = 30,
        XC_cross_reverse = 32,
        XC_crosshair = 34,
        XC_diamond_cross = 36,
        XC_dot = 38,
        XC_dotbox = 40,
        XC_double_arrow = 42,
        XC_draft_large = 44,
        XC_draft_small = 46,

        XC_draped_box = 48,
        XC_exchange = 50,
        XC_fleur = 52,
        XC_gobbler = 54,
        XC_gumby = 56,
        XC_hand1 = 58,
        XC_hand2 = 60,
        XC_heart = 62,
        XC_icon = 64,
        XC_iron_cross = 66,
        XC_left_ptr = 68,
        XC_left_side = 70,

        XC_left_tee = 72,
        XC_left_button = 74,
        XC_ll_angle = 76,
        XC_lr_angle = 78,
        XC_man = 80,
        XC_middlebutton = 82,
        XC_mouse = 84,
        XC_pencil = 86,
        XC_pirate = 88,
        XC_plus = 90,
        XC_question_arrow = 92,
        XC_right_ptr = 94,

        XC_right_side = 96,
        XC_right_tee = 98,
        XC_rightbutton = 100,
        XC_rtl_logo = 102,
        XC_sailboat = 104,
        XC_sb_down_arrow = 106,
        XC_sb_h_double_arrow = 108,
        XC_sb_left_arrow = 110,
        XC_sb_right_arrow = 112,
        XC_sb_up_arrow = 114,
        XC_sb_v_double_arrow = 116,
        XC_sb_shuttle = 118,

        XC_sizing = 120,
        XC_spider = 122,
        XC_spraycan = 124,
        XC_star = 126,
        XC_target = 128,
        XC_tcross = 130,
        XC_top_left_arrow = 132,
        XC_top_left_corner = 134,
        XC_top_right_corner = 136,
        XC_top_side = 138,
        XC_top_tee = 140,
        XC_trek = 142,

        XC_ul_angle = 144,
        XC_umbrella = 146,
        XC_ur_angle = 148,
        XC_watch = 150,
        XC_xterm = 152,
        XC_num_glyphs = 154
    }

    public enum SystrayRequest
    {
        SYSTEM_TRAY_REQUEST_DOCK = 0,
        SYSTEM_TRAY_BEGIN_MESSAGE = 1,
        SYSTEM_TRAY_CANCEL_MESSAGE = 2
    }

    public enum NetWmStateRequest
    {
        _NET_WM_STATE_REMOVE = 0,
        _NET_WM_STATE_ADD = 1,
        _NET_WM_STATE_TOGGLE = 2
    }

    public enum NetWmMoveResize
    {
        _NET_WM_MOVERESIZE_SIZE_TOPLEFT = 0,
        _NET_WM_MOVERESIZE_SIZE_TOP = 1,
        _NET_WM_MOVERESIZE_SIZE_TOPRIGHT = 2,
        _NET_WM_MOVERESIZE_SIZE_RIGHT = 3,
        _NET_WM_MOVERESIZE_SIZE_BOTTOMRIGHT = 4,
        _NET_WM_MOVERESIZE_SIZE_BOTTOM = 5,
        _NET_WM_MOVERESIZE_SIZE_BOTTOMLEFT = 6,
        _NET_WM_MOVERESIZE_SIZE_LEFT = 7,
        _NET_WM_MOVERESIZE_MOVE = 8,
        _NET_WM_MOVERESIZE_SIZE_KEYBOARD = 9,
        _NET_WM_MOVERESIZE_MOVE_KEYBOARD = 10,
        _NET_WM_MOVERESIZE_CANCEL = 11
    }

    [Flags]
    public enum XSizeHintsFlags
    {
        USPosition = (1 << 0),
        USSize = (1 << 1),
        PPosition = (1 << 2),
        PSize = (1 << 3),
        PMinSize = (1 << 4),
        PMaxSize = (1 << 5),
        PResizeInc = (1 << 6),
        PAspect = (1 << 7),
        PAllHints = (PPosition | PSize | PMinSize | PMaxSize | PResizeInc | PAspect),
        PBaseSize = (1 << 8),
        PWinGravity = (1 << 9),
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct XSizeHints
    {
        public IntPtr flags;
        public int x;
        public int y;
        public int width;
        public int height;
        public int min_width;
        public int min_height;
        public int max_width;
        public int max_height;
        public int width_inc;
        public int height_inc;
        public int min_aspect_x;
        public int min_aspect_y;
        public int max_aspect_x;
        public int max_aspect_y;
        public int base_width;
        public int base_height;
        public int win_gravity;
    }

    [Flags]
    public enum XWMHintsFlags
    {
        InputHint = (1 << 0),
        StateHint = (1 << 1),
        IconPixmapHint = (1 << 2),
        IconWindowHint = (1 << 3),
        IconPositionHint = (1 << 4),
        IconMaskHint = (1 << 5),
        WindowGroupHint = (1 << 6),
        AllHints = (InputHint | StateHint | IconPixmapHint | IconWindowHint | IconPositionHint | IconMaskHint | WindowGroupHint)
    }

    public enum XInitialState
    {
        DontCareState = 0,
        NormalState = 1,
        ZoomState = 2,
        IconicState = 3,
        InactiveState = 4
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct XWMHints
    {
        public IntPtr flags;
        public bool input;
        public XInitialState initial_state;
        public IntPtr icon_pixmap;
        public IntPtr icon_window;
        public int icon_x;
        public int icon_y;
        public IntPtr icon_mask;
        public IntPtr window_group;
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct XIconSize
    {
        public int min_width;
        public int min_height;
        public int max_width;
        public int max_height;
        public int width_inc;
        public int height_inc;
    }

    public delegate int XErrorHandler(IntPtr DisplayHandle, ref XErrorEvent error_event);

    public enum XRequest : byte
    {
        X_CreateWindow = 1,
        X_ChangeWindowAttributes = 2,
        X_GetWindowAttributes = 3,
        X_DestroyWindow = 4,
        X_DestroySubwindows = 5,
        X_ChangeSaveSet = 6,
        X_ReparentWindow = 7,
        X_MapWindow = 8,
        X_MapSubwindows = 9,
        X_UnmapWindow = 10,
        X_UnmapSubwindows = 11,
        X_ConfigureWindow = 12,
        X_CirculateWindow = 13,
        X_GetGeometry = 14,
        X_QueryTree = 15,
        X_InternAtom = 16,
        X_GetAtomName = 17,
        X_ChangeProperty = 18,
        X_DeleteProperty = 19,
        X_GetProperty = 20,
        X_ListProperties = 21,
        X_SetSelectionOwner = 22,
        X_GetSelectionOwner = 23,
        X_ConvertSelection = 24,
        X_SendEvent = 25,
        X_GrabPointer = 26,
        X_UngrabPointer = 27,
        X_GrabButton = 28,
        X_UngrabButton = 29,
        X_ChangeActivePointerGrab = 30,
        X_GrabKeyboard = 31,
        X_UngrabKeyboard = 32,
        X_GrabKey = 33,
        X_UngrabKey = 34,
        X_AllowEvents = 35,
        X_GrabServer = 36,
        X_UngrabServer = 37,
        X_QueryPointer = 38,
        X_GetMotionEvents = 39,
        X_TranslateCoords = 40,
        X_WarpPointer = 41,
        X_SetInputFocus = 42,
        X_GetInputFocus = 43,
        X_QueryKeymap = 44,
        X_OpenFont = 45,
        X_CloseFont = 46,
        X_QueryFont = 47,
        X_QueryTextExtents = 48,
        X_ListFonts = 49,
        X_ListFontsWithInfo = 50,
        X_SetFontPath = 51,
        X_GetFontPath = 52,
        X_CreatePixmap = 53,
        X_FreePixmap = 54,
        X_CreateGC = 55,
        X_ChangeGC = 56,
        X_CopyGC = 57,
        X_SetDashes = 58,
        X_SetClipRectangles = 59,
        X_FreeGC = 60,
        X_ClearArea = 61,
        X_CopyArea = 62,
        X_CopyPlane = 63,
        X_PolyPoint = 64,
        X_PolyLine = 65,
        X_PolySegment = 66,
        X_PolyRectangle = 67,
        X_PolyArc = 68,
        X_FillPoly = 69,
        X_PolyFillRectangle = 70,
        X_PolyFillArc = 71,
        X_PutImage = 72,
        X_GetImage = 73,
        X_PolyText8 = 74,
        X_PolyText16 = 75,
        X_ImageText8 = 76,
        X_ImageText16 = 77,
        X_CreateColormap = 78,
        X_FreeColormap = 79,
        X_CopyColormapAndFree = 80,
        X_InstallColormap = 81,
        X_UninstallColormap = 82,
        X_ListInstalledColormaps = 83,
        X_AllocColor = 84,
        X_AllocNamedColor = 85,
        X_AllocColorCells = 86,
        X_AllocColorPlanes = 87,
        X_FreeColors = 88,
        X_StoreColors = 89,
        X_StoreNamedColor = 90,
        X_QueryColors = 91,
        X_LookupColor = 92,
        X_CreateCursor = 93,
        X_CreateGlyphCursor = 94,
        X_FreeCursor = 95,
        X_RecolorCursor = 96,
        X_QueryBestSize = 97,
        X_QueryExtension = 98,
        X_ListExtensions = 99,
        X_ChangeKeyboardMapping = 100,
        X_GetKeyboardMapping = 101,
        X_ChangeKeyboardControl = 102,
        X_GetKeyboardControl = 103,
        X_Bell = 104,
        X_ChangePointerControl = 105,
        X_GetPointerControl = 106,
        X_SetScreenSaver = 107,
        X_GetScreenSaver = 108,
        X_ChangeHosts = 109,
        X_ListHosts = 110,
        X_SetAccessControl = 111,
        X_SetCloseDownMode = 112,
        X_KillClient = 113,
        X_RotateProperties = 114,
        X_ForceScreenSaver = 115,
        X_SetPointerMapping = 116,
        X_GetPointerMapping = 117,
        X_SetModifierMapping = 118,
        X_GetModifierMapping = 119,
        X_NoOperation = 127
    }

    [Flags]
    public enum XIMProperties
    {
        XIMPreeditArea = 0x0001,
        XIMPreeditCallbacks = 0x0002,
        XIMPreeditPosition = 0x0004,
        XIMPreeditNothing = 0x0008,
        XIMPreeditNone = 0x0010,
        XIMStatusArea = 0x0100,
        XIMStatusCallbacks = 0x0200,
        XIMStatusNothing = 0x0400,
        XIMStatusNone = 0x0800,
    }

    [Flags]
    public enum WindowType
    {
        Client = 1,
        Whole = 2,
        Both = 3
    }

    public enum XEmbedMessage
    {
        EmbeddedNotify = 0,
        WindowActivate = 1,
        WindowDeactivate = 2,
        RequestFocus = 3,
        FocusIn = 4,
        FocusOut = 5,
        FocusNext = 6,
        FocusPrev = 7,
        /* 8-9 were used for XEMBED_GRAB_KEY/XEMBED_UNGRAB_KEY */
        ModalityOn = 10,
        ModalityOff = 11,
        RegisterAccelerator = 12,
        UnregisterAccelerator = 13,
        ActivateAccelerator = 14
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct XcursorImage
    {
        private int version;
        public int size;       /* nominal size for matching */
        public int width;      /* actual width */
        public int height;     /* actual height */
        public int xhot;       /* hot spot x (must be inside image) */
        public int yhot;       /* hot spot y (must be inside image) */
        public int delay;       /* hot spot y (must be inside image) */
        public IntPtr pixels;    /* pointer to pixels */

        public override string ToString()
        {
            return string.Format("XCursorImage (version: {0}, size: {1}, width: {2}, height: {3}, xhot: {4}, yhot: {5}, delay: {6}, pixels: {7}",
                version, size, width, height, xhot, yhot, delay, pixels);
        }
    };

    [StructLayout(LayoutKind.Sequential)]
    public struct XcursorImages
    {
        public int nimage;     /* number of images */
        public IntPtr images;   /* array of XcursorImage pointers */
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct XIMStyles
    {
        public ushort count_styles;
        public IntPtr supported_styles;
    }

    [StructLayout(LayoutKind.Sequential)]
    [Serializable]
    public class XPoint
    {
        public short X;
        public short Y;
    }

    [StructLayout(LayoutKind.Sequential)]
    [Serializable]
    public class XIMCallback
    {
        public IntPtr client_data;
        public XIMProc callback;
        [NonSerialized]
        GCHandle gch;

        public XIMCallback(IntPtr clientData, XIMProc proc)
        {
            this.client_data = clientData;
            this.gch = GCHandle.Alloc(proc);
            this.callback = proc;
        }

        ~XIMCallback()
        {
            gch.Free();
        }
    }

    [StructLayout(LayoutKind.Sequential)]
    public unsafe struct XImage
    {
        public int width, height; /* size of image */
        public int xoffset; /* number of pixels offset in X direction */
        public int format; /* XYBitmap, XYPixmap, ZPixmap */
        public IntPtr data; /* pointer to image data */
        public int byte_order; /* data byte order, LSBFirst, MSBFirst */
        public int bitmap_unit; /* quant. of scanline 8, 16, 32 */
        public int bitmap_bit_order; /* LSBFirst, MSBFirst */
        public int bitmap_pad; /* 8, 16, 32 either XY or ZPixmap */
        public int depth; /* depth of image */
        public int bytes_per_line; /* accelerator to next scanline */
        public int bits_per_pixel; /* bits per pixel (ZPixmap) */
        public ulong red_mask; /* bits in z arrangement */
        public ulong green_mask;
        public ulong blue_mask;
        private fixed byte funcs[128];
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct XVisualInfo
    {
        public IntPtr visual;
        public IntPtr visualid;
        public int screen;
        public uint depth;
        public int klass;
        public IntPtr red_mask;
        public IntPtr green_mask;
        public IntPtr blue_mask;
        public int colormap_size;
        public int bits_per_rgb;
    }

    public enum XIMFeedback
    {
        Reverse = 1,
        Underline = 2,
        Highlight = 4,
        Primary = 32,
        Secondary = 64,
        Tertiary = 128,
    }

    public struct XIMFeedbackStruct
    {
        public byte FeedbackMask; // one or more of XIMFeedback enum
    }

    public struct XIMText
    {
        public ushort Length;
        public IntPtr Feedback; // to XIMFeedbackStruct
        public bool EncodingIsWChar;
        public IntPtr String; // it could be either char* or wchar_t*
    }

    public struct XIMPreeditDrawCallbackStruct
    {
        public int Caret;
        public int ChangeFirst;
        public int ChangeLength;
        public IntPtr Text; // to XIMText
    }

    public enum XIMCaretDirection
    {
        XIMForwardChar,
        XIMBackwardChar,
        XIMForwardWord,
        XIMBackwardWord,
        XIMCaretUp,
        XIMCaretDown,
        XIMNextLine,
        XIMPreviousLine,
        XIMLineStart,
        XIMLineEnd,
        XIMAbsolutePosition,
        XIMDontChange
    }

    public enum XIMCaretStyle
    {
        IsInvisible,
        IsPrimary,
        IsSecondary
    }

    public enum LookupStatus
    {
        XBufferOverflow = -1,
        XLookupNone = 1,
        XLookupChars = 2,
        XLookupKeySym = 3,
        XLookupBoth = 4,
    }

    public struct XIMPreeditCaretCallbackStruct
    {
        public int Position;
        public XIMCaretDirection Direction;
        public XIMCaretStyle Style;
    }

    // only PreeditStartCallback requires return value though.
    public delegate int XIMProc(IntPtr xim, IntPtr clientData, IntPtr callData);

    public static class XNames
    {
        public const string XNVaNestedList = "XNVaNestedList";
        public const string XNQueryInputStyle = "queryInputStyle";
        public const string XNClientWindow = "clientWindow";
        public const string XNInputStyle = "inputStyle";
        public const string XNFocusWindow = "focusWindow";

        // XIMPreeditCallbacks delegate names.
        public const string XNPreeditStartCallback = "preeditStartCallback";
        public const string XNPreeditDoneCallback = "preeditDoneCallback";
        public const string XNPreeditDrawCallback = "preeditDrawCallback";
        public const string XNPreeditCaretCallback = "preeditCaretCallback";
        public const string XNPreeditStateNotifyCallback = "preeditStateNotifyCallback";
        public const string XNPreeditAttributes = "preeditAttributes";
        // XIMStatusCallbacks delegate names.
        public const string XNStatusStartCallback = "statusStartCallback";
        public const string XNStatusDoneCallback = "statusDoneCallback";
        public const string XNStatusDrawCallback = "statusDrawCallback";
        public const string XNStatusAttributes = "statusAttributes";

        public const string XNArea = "area";
        public const string XNAreaNeeded = "areaNeeded";
        public const string XNSpotLocation = "spotLocation";
        public const string XNFontSet = "fontSet";

        public const string XNFilterEvents = "filterEvents";
    }

    public unsafe struct XRRMonitorInfo
    {
        public IntPtr Name;
        public int Primary;
        public int Automatic;
        public int NOutput;
        public int X;
        public int Y;
        public int Width;
        public int Height;
        public int MWidth;
        public int MHeight;
        public IntPtr* Outputs;
    }
}
