C# IME모드 한/영전환 관련..

using System;
using System.Windows.Forms;
using System.Runtime.InteropServices;

namespace QEControls
{
/// <summary>
/// Summary description for FlickerFreeRichEditTextBox.
/// </summary>
public class FlickerFreeRichEditTextBox : RichTextBox
{

// #define WM_PAINT 0x000F

const short WM_PAINT = 0x00f;
const short WM_IME_NOTIFY = 0x0282;
const int IME_CMODE_NATIVE = 0x1;
//const short IMN_SETCONVERSIONMODE = 0x06;
private IntPtr IMN_SETCONVERSIONMODE = new IntPtr(0x06);

public FlickerFreeRichEditTextBox()
{
//
// TODO: Add constructor logic here
//
//SetStyle(ControlStyles.AllPaintingInWmPaint, true);
//SetStyle(ControlStyles.DoubleBuffer , true);
//SetStyle(ControlStyles.UserPaint , true);
_Paint = true;
this.ScrollBars = RichTextBoxScrollBars.Both;
}

[DllImport ("imm32.dll", CharSet=CharSet.Auto)]
public static extern int ImmGetContext (int hWnd);

[DllImport ("imm32.dll", CharSet=CharSet.Auto)]
public static extern int ImmReleaseContext (int hWnd, int hImc);

[DllImport ("imm32.dll", CharSet=CharSet.Auto)]
public static extern int ImmGetConversionStatus (int hImc, out int
fdwConversion, out int fdwSentence);

private bool _isHangulMode = false;
public bool IsHangulMode
{
get { return _isHangulMode; }
}

public bool _Paint = true;
public bool IsPainting
{
get
{
return _Paint;
}
}
protected override void WndProc(ref System.Windows.Forms.Message m)
{
if (m.Msg == WM_PAINT)
{
if (_Paint)
base.WndProc(ref m);
else
m.Result = IntPtr.Zero;
}
else if ( m.Msg == WM_IME_NOTIFY )
{
if ( m.WParam == IMN_SETCONVERSIONMODE )
{
int hImc, dwConversion = 0, dwSentense = 0;
hImc = ImmGetContext(this.Handle.ToInt32());
ImmGetConversionStatus(hImc, out dwConversion, out dwSentense);
if ( (dwConversion & IME_CMODE_NATIVE) == 1 )
{ // 한글모드
//System.Diagnostics.Trace.WriteLine("한글모드");
_isHangulMode = true;
}
else
{
//System.Diagnostics.Trace.WriteLine("English Mode");
_isHangulMode = false;
}
ImmReleaseContext(this.Handle.ToInt32(), hImc);
}
}
else
{
base.WndProc (ref m);
}
}

public void BeginUpdate()
{
_Paint = false;
}

public void EndUpdate()
{
_Paint = true;
}
}
}

출처 : http://www.ms-news.net/f2235/iso-8859-1-b-cmljahrlehrcb3i-oscw-mfrimh6ua7a1ltptnku-5396626.html