using System;

using System.Text;

using System.Windows.Forms;

using System.Runtime.InteropServices;

using System.Drawing;

using System.ComponentModel;namespace Vista.Controls

{

    public class CommandLink : Button

    {

        [DllImport("user32.dll", CharSet = CharSet.Unicode)]

        unsafe static extern IntPtr SendMessage(HandleRef hWnd, uint Msg, void* wParam, void* lParam);

        const int BS_CENTER = 0x00000300;

        const int BS_COMMANDLINK = 0x0000000E;

        const int BS_DEFCOMMANDLINK = 0x0000000F;

        const uint BCM_SETNOTE = 0x00001609;

        const uint BCM_GETNOTE = 0x0000160A;

        const uint BCM_GETNOTELENGTH = 0x0000160B;

        const uint BCM_SETSHIELD = 0x0000160C;

        public XButton()

        {

            //this.FlatStyle = FlatStyle.System;

        }

        protected override Size DefaultSize

        {

            get

            {

                return new Size(, );

            }

        }

        protected override CreateParams CreateParams

        {

            get

            {

                CreateParams cParams = base.CreateParams;

                cParams.Style |= BS_COMMANDLINK;

                return cParams;

            }

        }

        private bool _shield = false;

        [Category("Command Link"),

         Description("Gets or sets the shield icon visibility of the command link."),

         DefaultValue(false)]

        public unsafe bool Shield

        {

            get
 　　　　　　 {
　　　　　　　　　 return _shield;
　　　　　　　}

            set

            {

                _shield = value;

                SendMessage(new HandleRef(this, Handle), BCM_SETSHIELD, null, &value);

            }

        }

        [Category("Command Link"),

         Description("Gets or sets the note text of the command link."),

         DefaultValue("")]

        public string Note

        {

            get

            {

                return GetNoteText();

            }

            set

            {

                SetNoteText(value);

            }

        }

        private unsafe void SetNoteText(string value)

        {

            fixed (char* lpStr = value)

            {

                SendMessage(new HandleRef(this, Handle), BCM_SETNOTE, null, lpStr);

            }

        }

        private unsafe string GetNoteText()

        {

            int dwLength = (int)SendMessage(new HandleRef(this, Handle), BCM_GETNOTELENGTH, null, null) + ;

            char* lpStr = stackalloc char[dwLength];

            SendMessage(new HandleRef(this, Handle), BCM_GETNOTE, &dwLength, lpStr);

            return new string(lpStr);

        }

    }

}