[C#/WINFORM/DEVEXPRESS] GridView 클래스 : CustomDrawColumnHeader 이벤트를 사용해 컬럼 헤더 커스텀 그리기

■ GridView 클래스의 CustomDrawColumnHeader 이벤트를 사용해 컬럼 헤더를 커스텀 그리는 방법을 보여준다.

▶ MainForm.cs


using System;
using System.Drawing;

using DevExpress.Utils;
using DevExpress.Utils.Drawing;
using DevExpress.XtraEditors;
using DevExpress.XtraGrid.Columns;
using DevExpress.XtraGrid.Views.Grid;

namespace TestProject
{
    /// <summary>
    /// 메인 폼
    /// </summary>
    public partial class MainForm : XtraForm
    {
        //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor
        ////////////////////////////////////////////////////////////////////////////////////////// Public

        #region 생성자 - MainForm()

        /// <summary>
        /// 생성자
        /// </summary>
        public MainForm()
        {
            InitializeComponent();

            this.gridView.InitializeView
            (
                false,                          // Multi Select
                GridMultiSelectMode.CellSelect, // Grid Multi Select Mode
                DrawFocusRectStyle.CellFocus,   // Draw Focus Rect Style
                true,                           // Show Indicator
                true,                           // Show Column Headers
                true,                           // Allow Column Moving
                true,                           // Allow Column Resizing
                true,                           // Allow Filter
                true,                           // Allow Sort
                false,                          // Allow Cell Merge
                EditorShowMode.Default,         // Editor Show Mode
                false                           // Editable
            );

            this.gridView.OptionsBehavior.AutoPopulateColumns = true;

            this.gridControl.DataSource = new nwindDataSetTableAdapters.OrdersTableAdapter().GetData();

            Random rand = new Random();

            foreach(GridColumn column in this.gridView.Columns)
            {
                column.AppearanceHeader.BackColor = Color.FromArgb
                (
                    rand.Next(0, 255),
                    rand.Next(255),
                    rand.Next(255)
                );

                column.AppearanceHeader.BackColor2 = Color.FromArgb
                (
                    rand.Next(0, 255),
                    rand.Next(255),
                    rand.Next(255)
                );
            }

            this.gridView.BestFitColumns();

            this.gridView.CustomDrawColumnHeader += gridView_CustomDrawColumnHeader;
        }

        #endregion

        //////////////////////////////////////////////////////////////////////////////////////////////////// Method
        ////////////////////////////////////////////////////////////////////////////////////////// Private

        #region 그리드 뷰 컬럼 헤더 커스텀 그리기 - gridView_CustomDrawColumnHeader(sender, e)

        /// <summary>
        /// 그리드 뷰 컬럼 헤더 커스텀 그리기
        /// </summary>
        /// <param name="sender">이벤트 발생자</param>
        /// <param name="e">이벤트 인자</param>
        private void gridView_CustomDrawColumnHeader(object sender, ColumnHeaderCustomDrawEventArgs e)
        {
            if(e.Column == null)
            {
                return;
            }

            Rectangle rectangle = e.Bounds;

            Brush brush = e.Cache.GetGradientBrush
            (
                rectangle,
                e.Column.AppearanceHeader.BackColor,
                e.Column.AppearanceHeader.BackColor2,
                e.Column.AppearanceHeader.GradientMode
            );

            rectangle.Inflate(-1, -1);

            e.Cache.FillRectangle(brush, rectangle);

            e.Appearance.DrawString(e.Cache, e.Info.Caption, e.Info.CaptionRect);

            foreach(DrawElementInfo info in e.Info.InnerElements)
            {
                if(!info.Visible)
                {
                    continue;
                }

                ObjectPainter.DrawObject(e.Cache, info.ElementPainter, info.ElementInfo);
            }

            e.Handled = true;
        }

        #endregion
    }
}

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using System;

using System.Drawing;

using DevExpress.Utils;

using DevExpress.Utils.Drawing;

using DevExpress.XtraEditors;

using DevExpress.XtraGrid.Columns;

using DevExpress.XtraGrid.Views.Grid;

namespace TestProject

{

/// <summary>

/// 메인 폼

/// </summary>

public partial class MainForm : XtraForm

{

//////////////////////////////////////////////////////////////////////////////////////////////////// Constructor

////////////////////////////////////////////////////////////////////////////////////////// Public

#region 생성자 - MainForm()

/// <summary>

/// 생성자

/// </summary>

public MainForm()

{

InitializeComponent();

this.gridView.InitializeView

(

false, // Multi Select

GridMultiSelectMode.CellSelect, // Grid Multi Select Mode

DrawFocusRectStyle.CellFocus, // Draw Focus Rect Style

true, // Show Indicator

true, // Show Column Headers

true, // Allow Column Moving

true, // Allow Column Resizing

true, // Allow Filter

true, // Allow Sort

false, // Allow Cell Merge

EditorShowMode.Default, // Editor Show Mode

false // Editable

);

this.gridView.OptionsBehavior.AutoPopulateColumns = true;

this.gridControl.DataSource = new nwindDataSetTableAdapters.OrdersTableAdapter().GetData();

Random rand = new Random();

foreach(GridColumn column in this.gridView.Columns)

{

column.AppearanceHeader.BackColor = Color.FromArgb

(

rand.Next(0, 255),

rand.Next(255),

rand.Next(255)

);

column.AppearanceHeader.BackColor2 = Color.FromArgb

(

rand.Next(0, 255),

rand.Next(255),

rand.Next(255)

);

}

this.gridView.BestFitColumns();

this.gridView.CustomDrawColumnHeader += gridView_CustomDrawColumnHeader;

}

#endregion

//////////////////////////////////////////////////////////////////////////////////////////////////// Method

////////////////////////////////////////////////////////////////////////////////////////// Private

#region 그리드 뷰 컬럼 헤더 커스텀 그리기 - gridView_CustomDrawColumnHeader(sender, e)

/// <summary>

/// 그리드 뷰 컬럼 헤더 커스텀 그리기

/// </summary>

/// <param name="sender">이벤트 발생자</param>

/// <param name="e">이벤트 인자</param>

private void gridView_CustomDrawColumnHeader(object sender, ColumnHeaderCustomDrawEventArgs e)

{

if(e.Column == null)

{

return;

}

Rectangle rectangle = e.Bounds;

Brush brush = e.Cache.GetGradientBrush

(

rectangle,

e.Column.AppearanceHeader.BackColor,

e.Column.AppearanceHeader.BackColor2,

e.Column.AppearanceHeader.GradientMode

);

rectangle.Inflate(-1, -1);

e.Cache.FillRectangle(brush, rectangle);

e.Appearance.DrawString(e.Cache, e.Info.Caption, e.Info.CaptionRect);

foreach(DrawElementInfo info in e.Info.InnerElements)

{

if(!info.Visible)

{

continue;

}

ObjectPainter.DrawObject(e.Cache, info.ElementPainter, info.ElementInfo);

}

e.Handled = true;

}

#endregion

}

TestProject.zip