いろいろ検索してみたんですが、まともなのが無かったんで、書きましたよ。はい。
public class Util
{
[DllImport("imm32.dll")]
public static extern IntPtr ImmGetContext(IntPtr hWnd);
[DllImport("imm32.dll")]
public static extern Boolean ImmReleaseContext(IntPtr hWnd);
[DllImport("imm32.dll")]
public static extern Boolean ImmSetConversionStatus(IntPtr hIMC, Int32 fdwConversion, Int32 fdwSentence);
[DllImport("imm32.dll")]
public static extern Boolean ImmSetOpenStatus(IntPtr hIMC, Int32 fOpen);
[DllImport("imm32.dll")]
public static extern Int32 ImmGetOpenStatus(IntPtr hIMC);
[DllImport("imm32.dll")]
public static extern Int32 ImmAssociateContext(IntPtr hWnd, Int32 hIMC);
const Int32 IME_CMODE_ALPHANUMERIC = 0x0000;
const Int32 IME_CMODE_NATIVE = 0x0001;
const Int32 IME_CMODE_CHINESE = IME_CMODE_NATIVE;
const Int32 IME_CMODE_HANGUL = IME_CMODE_NATIVE;
const Int32 IME_CMODE_JAPANESE = IME_CMODE_NATIVE;
const Int32 IME_CMODE_KATAKANA = 0x0002; // only effect under IME_CMODE_NATIVE
const Int32 IME_CMODE_LANGUAGE = 0x0003;
const Int32 IME_CMODE_FULLSHAPE = 0x0008;
const Int32 IME_CMODE_ROMAN = 0x0010;
const Int32 IME_CMODE_CHARCODE = 0x0020;
const Int32 IME_CMODE_HANJACONVERT = 0x0040;
const Int32 IME_CMODE_NATIVESYMBOL = 0x0080;
const Int32 IME_CMODE_SOFTKBD = 0x0080;
const Int32 IME_CMODE_NOCONVERSION = 0x0100;
const Int32 IME_CMODE_EUDC = 0x0200;
const Int32 IME_CMODE_SYMBOL = 0x0400;
const Int32 IME_CMODE_FIXED = 0x0800;
const Int32 IME_CONFIG_GENERAL = 1;
const Int32 IME_CONFIG_REGISTERWORD = 2;
const Int32 IME_CONFIG_SELECTDICTIONARY = 3;
const Int32 IME_SMODE_NONE = 0x0; // センテンスに関する情報はなし
const Int32 IME_SMODE_PLURALCLAUSE = 0x01; // 変換のための複文情報を使う
const Int32 IME_SMODE_SINGLECONVERT = 0x02; // 単漢字変換する
const Int32 IME_SMODE_AUTOMATIC = 0x04; // 自動モードで変換
const Int32 IME_SMODE_PHRASEPREDICT = 0x08; // 次の文字を予想するためにフレーズ情報を使う
const Int32 IME_SMODE_CONVERSATION = 0x0010;
/// <summary>
/// IMEモード
/// </summary>
public enum ImeMode
{
Off = 1, // IME オフ
Hiragana = 2, // 全角ひらがな
Katakana = 3, // 全角カタカナ
HalfKatakana = 4, // 半角カタカナ
Alpha = 5, // 全角英数
HalfAlpha = 6, // 半角英数
};
/// <summary>
/// IMEを制御する。WPF ComboBox 等の一部コントロールでは、IMEの制御ができない。そのための対応。
/// TextBox等では、下記で制御できる
/// <TextBox InputMethod.IsInputMethodEnabled="False"/> IME無効
/// <TextBox InputMethod.PreferredImeState="On" InputMethod.PreferredImeConversionMode="FullShape,Native"/> ひらがな
/// <TextBox InputMethod.PreferredImeState="On" InputMethod.PreferredImeConversionMode="Katakana,FullShape"/> カタカナ
/// <TextBox InputMethod.PreferredImeState="On" InputMethod.PreferredImeConversionMode="Katakana,Native"/> 半角カタカナ
/// <TextBox InputMethod.PreferredImeState="On" InputMethod.PreferredImeConversionMode="Alphanumeric,FullShape"/> 全角英数
/// <TextBox InputMethod.PreferredImeState="On" InputMethod.PreferredImeConversionMode="Alphanumeric"/> 半角英数
/// </summary>
/// <param name="ctrl"></param>
/// <param name="mode"></param>
public static void SetImeMode(Control ctrl, ImeMode mode)
{
IntPtr handle = IntPtr.Zero;
HwndSource hwnd = PresentationSource.FromVisual(ctrl) as HwndSource;
if (hwnd != null)
{
handle = hwnd.Handle;
}
IntPtr himc = ImmGetContext(handle);
Int32 dwConversion = 0;
try
{
if( mode == ImeMode.Off)
{
if (ImmGetOpenStatus(himc) != 0)
{
ImmSetOpenStatus(himc, 0);
}
return;
} else
{
if( ImmGetOpenStatus(himc) == 0)
{
ImmSetOpenStatus(himc, 1);
}
}
switch (mode)
{
case ImeMode.Hiragana:
ImmSetConversionStatus(himc, IME_CMODE_FULLSHAPE | IME_CMODE_JAPANESE, IME_SMODE_AUTOMATIC);
break;
case ImeMode.Katakana:
ImmSetConversionStatus(himc, IME_CMODE_FULLSHAPE | IME_CMODE_LANGUAGE | IME_CMODE_KATAKANA, IME_SMODE_AUTOMATIC);
break;
case ImeMode.HalfKatakana:
ImmSetConversionStatus(himc, IME_CMODE_LANGUAGE | IME_CMODE_KATAKANA, IME_SMODE_AUTOMATIC);
break;
case ImeMode.Alpha:
ImmSetConversionStatus(himc, IME_CMODE_FULLSHAPE | IME_CMODE_ROMAN, IME_SMODE_AUTOMATIC);
break;
case ImeMode.HalfAlpha:
ImmSetConversionStatus(himc, IME_CMODE_ROMAN, IME_SMODE_AUTOMATIC);
break;
}
}
finally
{
ImmReleaseContext(handle);
}
}
}
使い方は、GotFocusイベントをハンドリングして
private void FooComboBox_GotFocus(object sender, RoutedEventArgs e)
{
Util.SetImeMode(sender as ComboBox, Util.ImeMode.Off);
}
という感じ
