C# Winform简单的控件重绘

//重绘Checkbox，支持自定义图标

public class CoCheckBox : CheckBox
    {
        public CoCheckBox() : base()
        {
            //3.获取image路径
            //DirectoryInfo di = new DirectoryInfo(string.Format(@"{0}..\..\image", Application.StartupPath));
            //string imagePath = string.Format(@"{0}..\..\image\", Application.StartupPath);
            string imagePath = @"C:\Users\张伟涛\Documents\visual studio 2015\Projects\RedrawControls\RedrawControls\image";
            ImageList imgs = new ImageList();
            imgs.Images.Add("T", Image.FromFile(imagePath + "\\Check.png"));
            imgs.Images.Add("F", Image.FromFile(imagePath + "\\NoCheck.png"));

            this.FlatStyle = FlatStyle.Flat;
            this.Appearance = Appearance.Button;
            this.ImageList = imgs;
            this.FlatAppearance.BorderColor = SystemColors.Control;
            this.FlatAppearance.CheckedBackColor = SystemColors.Control;
            this.Font = new Font("华文新魏", 9f, FontStyle.Bold);
            this.Checked = false;
            this.ImageKey = "F";
            this.ImageAlign = ContentAlignment.MiddleLeft;
            this.TextAlign = ContentAlignment.MiddleRight;
            this.AutoSize = false;
        }

        protected override void OnCheckedChanged(EventArgs e)
        {
            base.OnCheckedChanged(e);
            if (this.Checked)
            {
                this.ImageKey = "T";
            }
            else
            {
                this.ImageKey = "F";
            }
        }
    }
//重绘RadioButton，支持自定义图标
    public class CoRadioButton : RadioButton
    {
        public CoRadioButton() : base()
        {
            string imagePath = @"C:\Users\张伟涛\Documents\visual studio 2015\Projects\RedrawControls\RedrawControls\image";
            ImageList imgs = new ImageList();
            imgs.Images.Add("T", Image.FromFile(imagePath + "Pick.png"));
            imgs.Images.Add("F", Image.FromFile(imagePath + "NoPick.png"));

            this.FlatStyle = FlatStyle.Flat;
            this.AutoSize = false;
            this.Appearance = Appearance.Button;
            this.ImageList = imgs;
            this.Checked = false;
            this.ImageKey = "F";
            this.ImageAlign = ContentAlignment.MiddleLeft;
            this.TextAlign = ContentAlignment.MiddleRight;
        }

        protected override void OnCheckedChanged(EventArgs e)
        {
            base.OnCheckedChanged(e);
            if (this.Checked)
            {
                this.ImageKey = "T";
            }
            else
            {
                this.ImageKey = "F";
            }
        }
    }
//重绘ComboBox
    public class CoComboBox : ComboBox
    {
        [System.Runtime.InteropServices.DllImport("user32.dll")]
        static extern IntPtr GetWindowDC(IntPtr hWnd);
        [System.Runtime.InteropServices.DllImport("user32.dll")]
        static extern int ReleaseDC(IntPtr hWnd, IntPtr hDC);

        public CoComboBox() : base()
        {
            this.FlatStyle = FlatStyle.Flat;
        }

        protected override void WndProc(ref Message m)
        {
            base.WndProc(ref m);
            if (m.Msg == 0xf || m.Msg == 0x133)
            {
                IntPtr hDC = GetWindowDC(m.HWnd);
                if (hDC.ToInt32() == 0)
                {
                    return;
                }
                Graphics g = Graphics.FromHdc(hDC);
                Rectangle rect = new Rectangle(0, 0, Width, Height);
                ControlPaint.DrawBorder(g, rect, Color.Gainsboro, ButtonBorderStyle.Solid);
                g.Dispose();

                ReleaseDC(m.HWnd, hDC);
            }
        }
    }

    public class CoPanel : System.Windows.Forms.Panel
    {
        [System.Runtime.InteropServices.DllImport("user32.dll")]
        static extern IntPtr GetWindowDC(IntPtr hWnd);
        [System.Runtime.InteropServices.DllImport("user32.dll")]
        static extern int ReleaseDC(IntPtr hWnd, IntPtr hDC);

        public CoPanel() : base()
        {

        }

        protected override void WndProc(ref Message m)
        {
            base.WndProc(ref m);
            if (m.Msg == 0xf || m.Msg == 0x133)
            {
                IntPtr hDC = GetWindowDC(m.HWnd);
                if (hDC.ToInt32() == 0)
                {
                    return;
                }
                Graphics g = Graphics.FromHdc(hDC);
                Rectangle rect = new Rectangle(0, 0, Width, Height);
                ControlPaint.DrawBorder(g, rect, Color.Gainsboro, ButtonBorderStyle.Solid);
                g.Dispose();
                ReleaseDC(m.HWnd, hDC);
            }
        }
    }

    public class CoTextBox : System.Windows.Forms.TextBox
    {
        [System.Runtime.InteropServices.DllImport("user32.dll")]
        static extern IntPtr GetWindowDC(IntPtr hWnd);
        [System.Runtime.InteropServices.DllImport("user32.dll")]
        static extern int ReleaseDC(IntPtr hWnd, IntPtr hDC);

        public CoTextBox() : base()
        {

        }

        protected override void WndProc(ref Message m)
        {
            base.WndProc(ref m);
            if (m.Msg == 0xf || m.Msg == 0x133)
            {
                IntPtr hDC = GetWindowDC(m.HWnd);
                if (hDC.ToInt32() == 0)
                {
                    return;
                }
                Graphics g = Graphics.FromHdc(hDC);
                Rectangle rect = new Rectangle(0, 0, Width, Height);
                ControlPaint.DrawBorder(g, rect, Color.Gainsboro, ButtonBorderStyle.Solid);
                g.Dispose();
                ReleaseDC(m.HWnd, hDC);
            }
        }
    }

    public class CoButton : Button
    {
        [System.Runtime.InteropServices.DllImport("user32.dll")]
        static extern IntPtr GetWindowDC(IntPtr hWnd);
        [System.Runtime.InteropServices.DllImport("user32.dll")]
        static extern int ReleaseDC(IntPtr hWnd, IntPtr hDC);

        public CoButton() : base()
        {

        }

        protected override void WndProc(ref Message m)
        {
            base.WndProc(ref m);
            if (m.Msg == 0xf || m.Msg == 0x133)
            {
                IntPtr hDC = GetWindowDC(m.HWnd);
                if (hDC.ToInt32() == 0)
                {
                    return;
                }
                Graphics g = Graphics.FromHdc(hDC);
                Rectangle rect = new Rectangle(0, 0, Width, Height);
                DirectoryInfo di = new DirectoryInfo(string.Format(@"{0}..\..\image", Application.StartupPath));
                string imagePath = di.FullName;
                Image img = Image.FromFile(imagePath + "\\Check.png");
                g.DrawImage(img,rect);
                //ControlPaint.DrawButton(g, rect, ButtonState.Normal);
                ControlPaint.DrawBorder(g, rect, Color.Gainsboro, ButtonBorderStyle.Outset);
                g.Dispose();
                ReleaseDC(m.HWnd, hDC);
            }
        }
    }

    public class PropertyGridEx : PropertyGrid
    {
        protected override void OnLayout(LayoutEventArgs e)
        {
            int width = 100;
            Control propertyGridView = this.Controls[2];
            Type propertyGridViewType = propertyGridView.GetType();

            propertyGridViewType.InvokeMember("MoveSplitterTo",
                    BindingFlags.InvokeMethod | BindingFlags.NonPublic | BindingFlags.Instance,
                    null, propertyGridView, new object[] { width });

            base.OnLayout(e);
        }
    }