Docking/UI/UIMemoryViewer.cs

#region Logging Defines
// include this any class or method that required logging, and comment-out what is not needed

#region Enabled logging levels
#define LOGGING_ENABLE_INFO
#define LOGGING_ENABLE_WARN
#define LOGGING_ENABLE_DEBUG
#define LOGGING_ENABLE_VERBOSEDEBUG
#define LOGGING_ENABLE_ERROR
#define LOGGING_ENABLE_VERBOSEERROR
#define LOGGING_ENABLE_PROFILER
#endregion
#endregion
//#define DISABLE_GETFIRSTNONZEROBYTE_ONUPDATE_ACCEPTEDPROCESS // when defined will not call GetFirstNonZeroByte() when AcceptedProcess is updated and is not null
#define DISABLE_GETFIRSTNONZERO_BYTE // when defined will make GetFirstNonZeroByte() an empty void method
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using Be.Windows.Forms;
using RomCheater.Logging;

using System.Diagnostics;
using Sojaner.MemoryScanner.MemoryProviers;
using System.Runtime.InteropServices;
using RomCheater.PluginFramework.Events;
using Sojaner.MemoryScanner;
using RomCheater.Core;
using Enterprise.Logging;

namespace RomCheater.Docking.UI
{
    public partial class UIMemoryViewer : UserControl,
        IAcceptsPlugin<IConfigPlugin>,
        IAcceptsProcess<Process>,
        IAcceptsProcessAndConfig,
        IAcceptsMemoryRange,
        IBrowseMemoryRegion,
        IAcceptPEData
    {

        public UIMemoryViewer()
        {
            InitializeComponent();
            SetStyle(ControlStyles.UserPaint, true);
            SetStyle(ControlStyles.DoubleBuffer, true);
            SetStyle(ControlStyles.AllPaintingInWmPaint, true);
            SetStyle(ControlStyles.ResizeRedraw, true);

            //this.OnPCSX2ProcessCallback = new UIEvents.PCSX2ProcessCallback(this.PCSX2ProcessCallback);
            //if (this.OnPCSX2ProcessCallback != null) { this.OnPCSX2ProcessCallback.Invoke(out procdata); }
            this.UpdateEnabled = false;
            txtData.BytesPerLine = (int)max_address_width;
            txtData.UseFixedBytesPerLine = true;
            //txtData.StringViewVisible = true;
            ramScroll.Minimum = (int)MemoryRangeStart;
            for (ulong i = MemoryRangeStart; i < (MemoryRangeStart + max_ram_view); i += max_address_width) { ramScroll.Maximum += (int)max_address_width; }
            ramScroll.Value = ramScroll.Minimum;
            this.CanChangeUpdateInterval = false;
            this.AcceptedPlugin = null; this.AcceptedProcess = null;
            txtAddresses.MouseWheel += new MouseEventHandler(txtAddresses_MouseWheel);
            txtData.MouseWheel += new MouseEventHandler(txtData_MouseWheel);
        }      

        private void GetFirstNonZeroByte()
        {
#if !DISABLE_GETFIRSTNONZERO_BYTE
            if (!DesignMode)
            {
                GenericMemoryProvider provider = new GenericMemoryProvider((IAcceptsProcessAndConfig)this);
                provider.OpenProvider();
                int addr = 0;
                provider.ReadFirstNonZeroByte(MemoryRangeStart, MemoryRangeSize, out addr);
                provider.CloseProvider();
                GotoAddress(addr);
            }
#else
            this.GotoImageBase();
#endif
        }
        #region IBrowseMemoryRegion
        public bool BrowseMemoryRegion(ulong MemoryRegion)
        {
            try
            {
                if (!((MemoryRangeStart <= MemoryRegion) && (MemoryRegion <= (MemoryRangeStart + MemoryRangeSize)))) { return false; }
                GotoAddress(MemoryRegion);
                return true;
            }
            catch (Exception ex)
            {
                gLog.Error.WriteLine("UIMemoryViewer.BrowseMemoryRegion(int MemoryRegion): Failed to Browse Memory Region: 0x{0:x8}", MemoryRegion);
                gLog.Verbose.Error.WriteLine(ex.ToString());
                return false;
            }
        }
        #endregion
        #region  IAcceptsProcess<Process> Members
        private Process _AcceptedProcess;
        public Process AcceptedProcess
        {
            get { return _AcceptedProcess; }
            set
            {
                _AcceptedProcess = value;
                update_timer.Enabled = (value != null);
                UpdateEnabled = update_timer.Enabled;
#if !DISABLE_GETFIRSTNONZEROBYTE_ONUPDATE_ACCEPTEDPROCESS
                if (value != null)
                    GetFirstNonZeroByte();
#endif
            }
        }
        #endregion
        #region IAcceptsPlugin<IConfigPlugin> Members
        public IConfigPlugin AcceptedPlugin { get; set; }
        #endregion
        #region IAcceptsMemoryRange members
        public ulong MemoryRangeStart { get { return MemorySizeConstants.MinimumAddress; } set { } }
        public ulong MemoryRangeSize
        {
            get
            {
                if (this.peData != null)
                {
                    if (this.peData.Is32bitAssembly())
                    {
                        return MemoryRangeStart + MemorySizeConstants.MaximumAddressSize_x86;
                    }
                    else
                    {
                        return MemoryRangeStart + MemorySizeConstants.MaximumAddressSize_x64;
                    }
                }
                else
                {
                    return MemoryRangeStart + MemorySizeConstants.MaximumAddressSize_x86;
                }
            }
            set { }
        }
        #endregion
        #region IAcceptPEData members
        private IPEDData peData { get; set; }
        public void SetPEViewerData(IPEDData peData) { this.peData = peData; }
        #endregion
        public void GotoTop() { this.CURRENT_TOP_ADDR = 0; }
        public void GotoBottom() { ulong size = (ulong)MemoryRangeSize; this.CURRENT_TOP_ADDR = (ulong)((size - 1) - max_ram_view); }
        public void GotoAddress(ulong addr)
        {
            if (this.peData.Is32bitAssembly())
            {
                gLog.Verbose.Debug.WriteLine("UIMemoryViewer::GotoAddress(0x{0:x8})", addr);
                this.CURRENT_TOP_ADDR = (ulong)(addr & 0xFFFFFFFF0);
            }
            else
            {
                gLog.Verbose.Debug.WriteLine("UIMemoryViewer::GotoAddress(0x{0:x16})", addr);
                this.CURRENT_TOP_ADDR = (ulong)(addr & (ulong)0xFFFFFFFFFFFFFFF0);
            }
            
        }
        private bool _UpdateEnabled;
        public bool UpdateEnabled
        {
            get { return _UpdateEnabled; }
            set
            {
                _UpdateEnabled = value;
                if (value) { this.update_timer.Enabled = true; }
                else { this.update_timer.Enabled = false; }
            }
        }
        private bool _CanChangeUpdateInterval;
        public bool CanChangeUpdateInterval
        {
            get { return _CanChangeUpdateInterval; }
            set { _CanChangeUpdateInterval = value; }
        }

        public int UpdateInterval
        {
            get { return this.update_timer.Interval; }
            set { if (CanChangeUpdateInterval) this.update_timer.Interval = value; }
        }
        private string AddressList = "";
        private string AsciiData = "";
        private byte[] RamData = new byte[] { };

        const ulong max_address_width = 16;
        static ulong max_ram_view = max_address_width * 20;

        static ulong small_scroll_change = max_address_width * 1; // scrolls one line (when you clikc the up or down arrows)
        static ulong medium_scroll_change = max_ram_view / 2; // scrolls half a page
        static ulong large_scroll_change = max_ram_view; // scrolls a full page
        private ulong _CURRENT_TOP_ADDR;
        ulong CURRENT_TOP_ADDR
        {
            get { return _CURRENT_TOP_ADDR; }
            set { txthexGoto.Value = _CURRENT_TOP_ADDR = value; }
        }
        //uint CURRENT_BOITTOM_ADDR() { return CURRENT_TOP_ADDR + max_ram_view; }
        private void UpdateMaxRamView()
        {
            if (this.IsDisposed) return;
            Graphics g = this.CreateGraphics();
            Size size = g.MeasureString("00", txtData.Font).ToSize();
            uint ByteHeight = (uint)size.Height;
            uint TotalHeight = (uint)txtData.Height;
            ulong NumberOfBytes = (uint)((TotalHeight / ByteHeight) * max_address_width) - max_address_width;
            ulong byte_width = (max_address_width * 2);
            max_ram_view = NumberOfBytes + (byte_width);
        }
        private void btnGotoAddress_Click(object sender, EventArgs e)
        {
            if (this.peData != null)
            {
                if (this.peData.Is32bitAssembly())
                {
                    gLog.Verbose.Debug.WriteLine("UIMemoryViewer::btnGotoAddress_Click(0x{0:x8})", txthexGoto.ToUInt32());
                    this.GotoAddress(txthexGoto.ToUInt32());
                }
                else
                {
                    gLog.Verbose.Debug.WriteLine("UIMemoryViewer::btnGotoAddress_Click(0x{0:x16})", txthexGoto.ToUInt64());
                    this.GotoAddress(txthexGoto.ToUInt64());
                }
            }
            else
            {
                gLog.Verbose.Debug.WriteLine("UIMemoryViewer::btnGotoAddress_Click(0x{0})", txthexGoto.ToUInt64().ToString("X"));
                this.GotoAddress(txthexGoto.ToUInt64());
            }
            
        }

        private void btnEditBytes_Click(object sender, EventArgs e)
        {
            byte[] data = (txtData.ByteProvider as DynamicByteProvider).Bytes.ToArray();
            gLog.Info.WriteLine("UIMemoryViewer :: editing {0} bytes", data.Length);
            bool reenable = false;
            if (this.UpdateEnabled) reenable = true;
            this.UpdateEnabled = false;
            ByteEditor editor = new ByteEditor(data, this.CURRENT_TOP_ADDR);
            editor.ShowDialog();
            int changed_byte_count = 0;
            if (editor.BytesEdited)
            {

                if (editor.AsBytes.Length == data.Length)
                {

                    for (int i = 0; i < data.Length; i++)
                    {
                        if (data[i] != editor.AsBytes[i])
                            changed_byte_count++;
                    }
                }
                //DynamicByteProvider _DynamicByteProvider = new DynamicByteProvider(editor.AsBytes);
                //txtData.ByteProvider = _DynamicByteProvider;
                //_DynamicByteProvider.Changed += new EventHandler(HexResourceViewerBytes_Changed);
                this.WriteCurrentBytes(this.CURRENT_TOP_ADDR, editor.AsBytes);
            }
            gLog.Info.WriteLine("UIMemoryViewer :: changed {0} bytes", changed_byte_count);
            this.UpdateEnabled = reenable;
        }
        private bool ForceUpdate = false;
        private bool ShouldUpdateResults()
        {
            //if (ResultsUpdateWorkerThread.IsBusy) { return false; }
            if (ForceUpdate) return true;
            //else if (TextIsBeingSelected) return false;
            //else if (NonHandledKeysAreBeingPressed) return false;
            else if (this.UpdateEnabled) return true;
            else { return false; }
        }
        private void UpdateGui(bool force)
        {
            if (AcceptedProcess == null) { return; }
            if (AcceptedPlugin == null) { return; }

            if (!this.ShouldUpdateResults()) { return; }// this.Logger.LogDebugMessage(string.Format("ShouldUpdateResults() -> returning false")); return; }
            this.UpdateMaxRamView();
            //if (!force)
            //{
            if (!ResultsUpdateWorkerThread.IsBusy)
                ResultsUpdateWorkerThread.RunWorkerAsync();
            //}
            //else
            //{
            //    while (!ResultsUpdateWorkerThread.IsBusy) { ResultsUpdateWorkerThread.CancelAsync(); Application.DoEvents(); }
            //    ResultsUpdateWorkerThread.RunWorkerAsync();
            //}
        }
        private void UpdateGui()
        {
            this.UpdateGui(false);
        }
        private byte[] GetMemory()
        {
            if (this.AcceptedPlugin != null)
            {
                if (this.AcceptedPlugin.SearchInProgess)
                {
                    return (txtData.ByteProvider as DynamicByteProvider).Bytes.ToArray();
                }
            }
            byte[] data = new byte[max_ram_view];          
            try
            {
                using (GenericMemoryProvider provider = new GenericMemoryProvider((IAcceptsProcessAndConfig)this))
                {
                    provider.OpenProvider();
                    ulong bytesReadSize;
                    provider.ReadProcessMemory(CURRENT_TOP_ADDR, (ulong)max_ram_view, out bytesReadSize, out data);
                    provider.CloseProvider();
                }
            }
            catch (Exception ex)
            {
                gLog.Error.WriteLine("{0}.GetMemory():{1}{2}", this.GetType().Name, System.Environment.NewLine, ex.ToString());
            }
            finally
            {
                if (data.Length == 0)
                {
                    data = new byte[max_ram_view];
                    for (int i = 0; i < data.Length; i++) { data[i] = 0x0; }
                }
            }
            return data;
        }
        private void UpdateMemroyView() { this.UpdateMemroyView(this.CURRENT_TOP_ADDR); }
        private void UpdateMemroyView(ulong address)
        {
            bool SearchInProgress = false;
            if (this.AcceptedPlugin != null) { SearchInProgress = this.AcceptedPlugin.SearchInProgess; }
            if (SearchInProgress) return;
            try
            {
                if (AcceptedProcess == null) { return; }
                if (AcceptedPlugin == null) { return; }

                byte[] data = GetMemory();
                RamData = data;
                #region old ascii-code
                try
                {
                    AddressList = "";
                    AsciiData = "";
                    // write the addreses out
                    for (ulong i = address; i < (address + max_ram_view); i += max_address_width) 
                    {
                        if (this.peData.Is32bitAssembly())
                        {
                            AddressList = AddressList + string.Format("{0:X8}:\n", i); 
                        }
                        else
                        {
                            AddressList = AddressList + string.Format("{0:X16}:\n", i); 
                        }                            
                    }
                    StringBuilder builder = new StringBuilder();
                    int count = 0;
                    // write ascii text
                    for (ulong i = 0; i < (0 + max_ram_view); i += max_address_width)
                    {
                        try
                        {
                            for (ulong j = 0; j < max_address_width; j++)
                            {
                                ulong current_real_address = address + j + i;
                                ulong current_addr = i + j;
                                if (current_addr >= MemoryRangeSize) break;
                                byte ascii_value_raw = data[current_addr];
                                char ascii_value;
                                char c = (char)data[current_addr];
                                if (char.IsControl(c)) { ascii_value = '.'; }
                                else { ascii_value = c; }
                                using (GenericMemoryProvider gmp = new GenericMemoryProvider((IAcceptsProcessAndConfig)this))
                                {
                                    gmp.OpenProvider();
                                    byte t;
                                    if (!gmp.ReadMemory(current_real_address, out t)) { ascii_value = '?'; }
                                    gmp.CloseProvider();
                                }                                
                                builder.Append(ascii_value.ToString());
                            }
                            builder.AppendLine();
                        }
                        catch (Exception ex)
                        {
                            gLog.Error.WriteLine("{0}.UpdateMemroyView().BuildingAsciiString:{1}{2}", this.GetType().Name, System.Environment.NewLine, ex.ToString());
                            return;
                        }
                        count++;
                    }
                    AsciiData = builder.ToString();
                }
                catch (Exception ex)
                {
                    gLog.Error.WriteLine("{0}.UpdateMemroyView():{1}{2}", this.GetType().Name, System.Environment.NewLine, ex.ToString());
                    return;
                }
                #endregion
            }
            catch (Exception ex) { gLog.Error.WriteLine("{0}.UpdateMemroyView():{1}{2}", this.GetType().Name, System.Environment.NewLine, ex.ToString()); }
        }
        //private void HexResourceViewerBytes_Changed(object sender, System.EventArgs e)
        //{
        //    this.WriteCurrentBytes();
        //}
        private void WriteCurrentBytes(ulong start_address, byte[] data)
        {
            try
            {
                if (AcceptedProcess == null) { return; }
                if (AcceptedPlugin == null) { return; }
                // Byte changed
                //byte[] data = (txtData.ByteProvider as DynamicByteProvider).Bytes.ToArray();
                using (GenericMemoryProvider provider = new GenericMemoryProvider((IAcceptsProcessAndConfig)this))
                {
                    provider.OpenProvider();
                    ulong bytesReadSize;

                    provider.WriteProcessMemory(start_address, data, out bytesReadSize);
                    //for (int i = 0; i < data.Length; i ++)
                    //{
                    //    int addr = (int)(start_address + i);
                    //    byte data_to_write = data[i];

                    //}
                    provider.CloseProvider();
                }
            }
            catch (Exception ex) { gLog.Error.WriteLine("{0}.WriteCurrentBytes():{1}{2}", this.GetType().Name, System.Environment.NewLine, ex.ToString()); }
        }

        private void update_timer_Tick(object sender, EventArgs e) { this.UpdateGui(); }
        private void ResultsUpdateWorkerThread_DoWork(object sender, DoWorkEventArgs e) { try { this.UpdateMemroyView(); } catch (Exception ex) { gLog.Error.WriteLine("{0}.ResultsUpdateWorkerThread_DoWork():{1}{2}", this.GetType().Name, System.Environment.NewLine, ex.ToString()); } }
        private void ResultsUpdateWorkerThread_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
        {
            try
            {
                txtAddresses.Text = AddressList;
                //this.Logger.LogDebugMessage(string.Format("RunWorkerCompeleted() -> Memory Size: {0}0x{2:X8}{1}", "{", "}", RamData.Length));
                DynamicByteProvider _DynamicByteProvider = new DynamicByteProvider(RamData);
                txtData.ByteProvider = _DynamicByteProvider;
                //_DynamicByteProvider.Changed += new EventHandler(HexResourceViewerBytes_Changed);
            }
            catch (ObjectDisposedException) { } // ignore errors aobut disposed objects (usually only happens when the parent closes)
            catch (Exception ex) { gLog.Error.WriteLine("{0}.ResultsUpdateWorkerThread_RunWorkerCompleted():{1}{2}", this.GetType().Name, System.Environment.NewLine, ex.ToString()); }
        }
        private void Handle_KeyDown(object sender, KeyEventArgs e)
        {
            //isScrolling = false;
            //bool reenable = false;
            //if (this.UpdateEnabled) reenable = true;
            //this.UpdateEnabled = false;

            this.UpdateMaxRamView();
            ulong ORIGINAL_ADDR = this.CURRENT_TOP_ADDR;

            ////if (e.Type == ScrollEventType.EndScroll) return;
            //uint size = max_ram_view;

            bool haveModifier = false;
            switch (e.Modifiers)
            {
                case Keys.Control:
                    switch (e.KeyCode)
                    {
                        case Keys.Home:
                            this.CURRENT_TOP_ADDR = 0; //NonHandledKeysAreBeingPressed = false; 
                            break;
                        case Keys.End:
                            if (this.peData.Is32bitAssembly())
                            {
                                this.CURRENT_TOP_ADDR = (uint)((MemoryRangeSize - 1) - (uint)max_ram_view); //NonHandledKeysAreBeingPressed = false;
                            }
                            else
                            {
                                this.CURRENT_TOP_ADDR = (ulong)((MemoryRangeSize - 1) - max_ram_view); //NonHandledKeysAreBeingPressed = false;
                            }
                            
                            break;
                        default:
                            //NonHandledKeysAreBeingPressed = true;
                            break;
                    }
                    break;
            }

            if (!haveModifier)
            {
                switch (e.KeyCode)
                {
                    case Keys.Up:
                        if (this.CURRENT_TOP_ADDR == 0 && (this.CURRENT_TOP_ADDR - small_scroll_change > this.CURRENT_TOP_ADDR))
                        {
                            this.CURRENT_TOP_ADDR = ORIGINAL_ADDR;
                        }
                        else
                        {
                            this.CURRENT_TOP_ADDR -= (ulong)small_scroll_change; //NonHandledKeysAreBeingPressed = false;
                        }
                        break;
                    case Keys.Down:
                        this.CURRENT_TOP_ADDR += (ulong)small_scroll_change; //NonHandledKeysAreBeingPressed = false;
                        break;
                    case Keys.PageUp:
                        if (this.CURRENT_TOP_ADDR == 0 && (this.CURRENT_TOP_ADDR - large_scroll_change > this.CURRENT_TOP_ADDR))
                        {
                            this.CURRENT_TOP_ADDR = ORIGINAL_ADDR;
                        }
                        else
                        {
                            this.CURRENT_TOP_ADDR -= (ulong)(large_scroll_change); //NonHandledKeysAreBeingPressed = false;
                        }
                        break;
                    case Keys.PageDown:
                        this.CURRENT_TOP_ADDR += (ulong)(large_scroll_change); //NonHandledKeysAreBeingPressed = false;
                        break;
                    default:
                        //NonHandledKeysAreBeingPressed = true;
                        break;
                }
            }
            if (this.CURRENT_TOP_ADDR < MemoryRangeStart) this.CURRENT_TOP_ADDR = MemoryRangeStart;
            //if (this.CURRENT_TOP_ADDR >= VTLB_VADDR_SIZE) this.CURRENT_TOP_ADDR = (size - 1) - max_ram_view;
            if (this.CURRENT_TOP_ADDR + max_ram_view >= MemoryRangeSize) this.CURRENT_TOP_ADDR = (uint)(MemoryRangeSize - max_ram_view);

            //this.UpdateEnabled = reenable;
        }

        private void UIMemoryViewer_KeyDown(object sender, KeyEventArgs e) { this.Handle_KeyDown(sender, e); }
        private void txtAddresses_KeyDown(object sender, KeyEventArgs e) { this.Handle_KeyDown(sender, e); }
        private void txtData_KeyDown(object sender, KeyEventArgs e) { this.Handle_KeyDown(sender, e); }
        private void txtAscii_KeyDown(object sender, KeyEventArgs e) { this.Handle_KeyDown(sender, e); }
        private void ramScroll_Scroll(object sender, ScrollEventArgs e) { this.Handle_Scroll(sender, e); }

        private ScrollEventArgs GetMouseWheelScrollChange(int WheelDelta)
        {
            ScrollEventArgs args = new ScrollEventArgs(ScrollEventType.SmallIncrement, 1);
            if (WheelDelta < 0)
            {
                //// negative: scroll down
                //// SmallDecrement -or- LargeDecrement
                //if (WheelDelta <= small_scroll_change)
                //{
                //    args = new ScrollEventArgs(ScrollEventType.SmallDecrement,(int)small_scroll_change);
                //}
                //if (WheelDelta > small_scroll_change && WheelDelta <= large_scroll_change)
                //{
                //    args = new ScrollEventArgs(ScrollEventType.LargeDecrement, (int)large_scroll_change);
                //}
                args = new ScrollEventArgs(ScrollEventType.SmallIncrement, 1);
            }
            else
            {
                //// positive: scroll up
                //// SmallIncrement  -or- LargeIncrement
                //if (WheelDelta <= small_scroll_change)
                //{
                //    args = new ScrollEventArgs(ScrollEventType.SmallIncrement, (int)small_scroll_change);
                //}
                //if (WheelDelta > small_scroll_change && WheelDelta <= large_scroll_change)
                //{
                //    args = new ScrollEventArgs(ScrollEventType.LargeIncrement, (int)large_scroll_change);
                //}
                args = new ScrollEventArgs(ScrollEventType.SmallDecrement, 1);
            }
            return args;
        }

        void txtAddresses_MouseWheel(object sender, MouseEventArgs e) { this.Handle_Scroll(sender, GetMouseWheelScrollChange(e.Delta)); }
        void txtData_MouseWheel(object sender, MouseEventArgs e) { this.Handle_Scroll(sender, GetMouseWheelScrollChange(e.Delta)); }
        void txtAscii_MouseWheel(object sender, MouseEventArgs e) { this.Handle_Scroll(sender, GetMouseWheelScrollChange(e.Delta)); }
        private void Handle_Scroll(object sender, ScrollEventArgs e)
        {
            //isScrolling = true;
            //bool reenable = false;
            //if (this.UpdateEnabled) reenable = true;
            //this.UpdateEnabled = false;

            this.UpdateMaxRamView();
            ulong ORIGINAL_ADDR = this.CURRENT_TOP_ADDR;
            //uint size = MemorySize;
            if (e.Type == ScrollEventType.EndScroll) return;

            switch (e.Type)
            {
                case ScrollEventType.SmallDecrement:
                    if (this.CURRENT_TOP_ADDR == 0 && ((this.CURRENT_TOP_ADDR - small_scroll_change) > this.CURRENT_TOP_ADDR))
                    {
                        this.CURRENT_TOP_ADDR = ORIGINAL_ADDR;
                    }
                    else
                    {
                        this.CURRENT_TOP_ADDR -= (small_scroll_change);
                    }
                    break;
                case ScrollEventType.SmallIncrement:
                    this.CURRENT_TOP_ADDR += (small_scroll_change);
                    break;

                case ScrollEventType.LargeDecrement:
                    if (this.CURRENT_TOP_ADDR == 0 && ((this.CURRENT_TOP_ADDR - large_scroll_change) > this.CURRENT_TOP_ADDR))
                    {
                        this.CURRENT_TOP_ADDR = ORIGINAL_ADDR;
                    }
                    else
                    {
                        this.CURRENT_TOP_ADDR -= (large_scroll_change);
                    }
                    break;
                case ScrollEventType.LargeIncrement:
                    this.CURRENT_TOP_ADDR += (large_scroll_change);
                    break;
                case ScrollEventType.ThumbPosition:
                //this.CURRENT_TOP_ADDR = (uint)e.NewValue;
                //break;
                default:
                    this.CURRENT_TOP_ADDR = (uint)(e.NewValue & 0xFFFFFFF0);
                    break;
            }
            if (this.CURRENT_TOP_ADDR < 0) this.CURRENT_TOP_ADDR = 0;
            //if (this.CURRENT_TOP_ADDR >= VTLB_VADDR_SIZE) this.CURRENT_TOP_ADDR = VTLB_VADDR_SIZE - max_ram_view;
            //if (this.CURRENT_TOP_ADDR < 0 || this.CURRENT_TOP_ADDR >= VTLB_VADDR_SIZE) this.CURRENT_TOP_ADDR = ORIGINAL_ADDR;
            if (this.CURRENT_TOP_ADDR + max_ram_view >= MemoryRangeSize) this.CURRENT_TOP_ADDR = (ulong)(MemoryRangeSize - max_ram_view);
            //this.UpdateEnabled = reenable;
            //isScrolling = false;
        }
        private void GotoImageBase()
        {
            if (this.peData == null) return;
            ulong ImageBase = 0;
            bool x86 = this.peData.Is32bitAssembly();
            if (x86)
            {
                ImageBase = this.peData._VirtualImageBase;
                uint ib = Convert.ToUInt32(ImageBase);
                gLog.Verbose.Debug.WriteLine("UIMemoryViewer::GotoImageBase(0x{0:x8})", ib);
                txthexGoto.Value = ib;
                this.GotoAddress(txthexGoto.ToUInt32());
            }
            else
            {
                ImageBase = this.peData._VirtualImageBase;
                ulong ib = Convert.ToUInt64(ImageBase);
                gLog.Verbose.Debug.WriteLine("UIMemoryViewer::GotoImageBase(0x{0:x16})", ib);
                txthexGoto.Value = (ulong)ib;
                this.GotoAddress(txthexGoto.ToUInt64());
            }

            
        }
        private void btnGotoImageBase_Click(object sender, EventArgs e)
        {
            this.GotoImageBase();
        }      

    }
}