搜集一些控件底层参数控制的代码

        ////private const int CS_DROPSHADOW = 0x00020000;
        /////// <summary>
        /////// 窗口显示阴影
        /////// </summary>
        ////protected override CreateParams CreateParams
        ////{
        ////    get
        ////    {
        ////        CreateParams cp = base.CreateParams;
        ////        cp.ClassStyle |= CS_DROPSHADOW;
        ////        return cp;
        ////    }
        ////}

        ////private const int CP_NOCLOSE_BUTTON = 0x200;
        /////// <summary>
        /////// 禁止关闭按钮，Alt F4也无效
        /////// </summary>
        ////protected override CreateParams CreateParams
        ////{
        ////    get
        ////    {
        ////        CreateParams myCp = base.CreateParams;
        ////        myCp.ClassStyle = myCp.ClassStyle | CP_NOCLOSE_BUTTON;
        ////        return myCp;
        ////    }
        ////}

        ////protected override CreateParams CreateParams
        ////{
        ////    get
        ////    {
        ////        int WS_EX_TOOLWINDOW = 0x80;
        ////        CreateParams CP = base.CreateParams;

        ////        CP.ExStyle = CP.ExStyle | WS_EX_TOOLWINDOW;
        ////        return CP;
        ////    }
        ////}

        ////protected override CreateParams CreateParams
        ////{
        ////    get
        ////    {
        ////        const int WS_EX_APPWINDOW = 0x00040000;
        ////        const int WS_EX_TOOLWINDOW = 0x00000080;

        ////        CreateParams result = base.CreateParams;
        ////        result.ExStyle = result.ExStyle & (~WS_EX_APPWINDOW);
        ////        result.ExStyle = result.ExStyle | WS_EX_TOOLWINDOW;
        ////        return result;
        ////    }
        ////}

        /////// <summary>
        /////// 设为没有焦点
        /////// </summary>
        ////protected override CreateParams CreateParams
        ////{
        ////    get
        ////    {
        ////        CreateParams cp = base.CreateParams;
        ////        cp.ExStyle |= (int)0x08000000L;      //把窗体设置成WS_EX_NOACTIVATE样式
        ////        return cp;
        ////    }
        ////}

        //使控制不接受焦点--------------------
        ////[System.Runtime.InteropServices.DllImport("user32.dll")]
        ////private extern static IntPtr SetActiveWindow(IntPtr handle);

        ////private const int WM_ACTIVATE = 0x006;
        ////private const int WM_ACTIVATEAPP = 0x01C;
        ////private const int WM_NCACTIVATE = 0x086;
        ////private const int WA_INACTIVE = 0;
        ////private const int WM_MOUSEACTIVATE = 0x21;
        ////private const int MA_NOACTIVATE = 3;
       
        ////protected override void WndProc(ref Message m)
        ////{
        ////    if (m.Msg == WM_MOUSEACTIVATE)
        ////    {
        ////        m.Result = new IntPtr(MA_NOACTIVATE);
        ////        return;
        ////    }
        ////    else if (m.Msg == WM_NCACTIVATE)
        ////    {
        ////        if (((int)m.WParam & 0xFFFF) != WA_INACTIVE)
        ////        {
        ////            if (m.LParam != IntPtr.Zero)
        ////            {
        ////                SetActiveWindow(m.LParam);
        ////            }
        ////            else
        ////            {
        ////                SetActiveWindow(IntPtr.Zero);
        ////            }
        ////        }
        ////    }
        ////    base.WndProc(ref m);
        ////}
        //--------------------------------------------------
public class RichEdit50 : RichTextBox
    {
        [DllImport("kernel32.dll", CharSet = CharSet.Auto)]
        static extern IntPtr LoadLibrary(string lpFileName);

        protected override CreateParams CreateParams
        {
            get
            {
                CreateParams prams = base.CreateParams;
                if (LoadLibrary("msftedit.dll") != IntPtr.Zero)
                {
                    prams.ExStyle |= 0x020; // transparent
                    prams.ClassName = "RICHEDIT50W";
                }
                return prams;
            }
        }
    }
public class MyTextBox : TextBox
{
    public MyTextBox()
    {
        this.SetStyle(ControlStyles.SupportsTransparentBackColor, true);
    }
}