MultiSelect for WinForms
IsFullWidth メソッド (CharHelper)

C1.Win.Input.6 アセンブリ > C1.Framework 名前空間 > CharHelper クラス : IsFullWidth メソッド
Indicates whether the specified Unicode character is a full width character. Usually CJK characters are considers as full widths.
オーバーロード一覧
オーバーロード解説
Indicates whether the specified Unicode character is a full width character. Usually CJK characters are considers as full widths.  
Indicates wether the character at the specified position in the specified string is a full width character. Usually CJK characters are considers as full widths.  
参照

CharHelper クラス
CharHelper メンバ