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);
}
}