Source/Controls/DGHScrollBar.cs

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#if FRAMEWORK20
using System;
using System.Text;
using System.Windows.Forms;
using System.Drawing;
using DevComponents.DotNetBar.ScrollBar;
using System.ComponentModel;
using DevComponents.DotNetBar.Rendering;
using System.Runtime.InteropServices;
using System.Reflection;

namespace DevComponents.DotNetBar.Controls
{
    internal class DGHScrollBar : HScrollBar, ScrollBarReplacement.IScrollBarExtender
    {
        #region Private Variables
        private ScrollBarReplacement m_ScrollBarImpl = null;
        private bool m_EnableStyling = true;
        #endregion

        #region Constructor
        public DGHScrollBar()
        {
            m_ScrollBarImpl = new ScrollBarReplacement(this);

            this.SetStyle(ControlStyles.UserPaint, true);
            this.SetStyle(ControlStyles.AllPaintingInWmPaint, true);
            this.SetStyle(ControlStyles.Opaque, true);
            this.SetStyle(ControlStyles.ResizeRedraw, true);
            this.SetStyle(DisplayHelp.DoubleBufferFlag, true);
            this.SetStyle(ControlStyles.SupportsTransparentBackColor, false);
        }
        #endregion

        #region Internal Implementation
        protected override CreateParams CreateParams
        {
            get
            {
                CreateParams p = base.CreateParams;
                if (m_EnableStyling)
                {
                    p.ClassName = null;
                    p.Style = 0x2000000;
                    p.Style |= 0x44000000;
                    if (this.Visible)
                        p.Style |= 0x10000000;
                    if (!this.Enabled)
                        p.Style |= 0x8000000;
                    if (this.RightToLeft == RightToLeft.Yes)
                    {
                        p.ExStyle |= 0x2000;
                        p.ExStyle |= 0x1000;
                        p.ExStyle |= 0x4000;
                    }
                }
                return p;
            }
        }
        protected override void Dispose(bool disposing)
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