Source/Controls/DataGridViewX.cs

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#if FRAMEWORK20
using System;
using System.Text;
using System.Windows.Forms;
using System.Drawing;
using DevComponents.DotNetBar.Rendering;
using System.Drawing.Drawing2D;
using System.Reflection;
using System.ComponentModel;

namespace DevComponents.DotNetBar.Controls
{
    /// <summary>
    /// Represents the DataGridView control with enhanced Office 2007 style.
    /// </summary>
    [ToolboxBitmap(typeof(DataGridViewX), "Controls.DataGridViewX.bmp")]
    public class DataGridViewX : DataGridView
    {
        #region Private Variables
        private int m_MouseOverColumnHeader = -2;
        private int m_MouseDownColumnHeader = -2;
        private int m_MouseDownRowIndex = -2;
        private int m_MouseOverRowIndex = -2;
        private bool m_Office2007StyleEnabled = true;
        private Office2007DataGridViewColorTable m_ColorTable = null;
        private Office2007ButtonItemStateColorTable m_ButtonStateColorTable = null;
        private SelectionInfo[] m_ColumnSelectionState = new SelectionInfo[1];
        //private int m_CurrentCellRowIndex = -1;
        private int m_SelectedRowIndex = -2;
        private bool m_HighlightSelectedColumnHeaders = true;
        private bool m_SelectAllSignVisible = true;
        private bool m_PaintEnhancedSelection = true;
        #endregion

        #region Constructor
        public DataGridViewX()
            : base()
        {
            SetupScrollBars();
        }
        #endregion

        #region Internal Implementation
        protected override void OnCellPainting(DataGridViewCellPaintingEventArgs e)
        {
            bool enabled = this.Enabled;
            Office2007DataGridViewColorTable ct = GetColorTable();
            if (!m_Office2007StyleEnabled || ct == null ||
                e.Handled || e.ColumnIndex >= 0 && e.RowIndex >= 0 &&
                (!m_PaintEnhancedSelection || (e.State & DataGridViewElementStates.Selected) != DataGridViewElementStates.Selected))
            {
                base.OnCellPainting(e);
                return;
            }

            Rectangle r = e.CellBounds;
            Graphics g = e.Graphics;
            LinearGradientColorTable bt = null;
            Color borderColor = Color.Empty;
            DataGridViewColumn column = null;