lipsync/trunk/LipSync/Common/NumericUpDownEx.cs

/*
 * NumericUpDownEx.cs
 * Copyright (c) 2007-2009 kbinani
 *
 * This file is part of LipSync.
 *
 * LipSync is free software; you can redistribute it and/or
 * modify it under the terms of the BSD License.
 *
 * LipSync is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 */
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
//using System.Data;
using System.Text;
using System.Windows.Forms;

namespace LipSync {
    /// <summary>
    /// MouseWheelでIncrementずつ値を増減させることのできるNumericUpDown
    /// </summary>
    public partial class NumericUpDownEx : NumericUpDown {
        public NumericUpDownEx() {
            InitializeComponent();
        }
        protected override void OnMouseWheel( MouseEventArgs e ) {
            decimal new_val;
            if ( e.Delta > 0 ) {
                new_val = this.Value + this.Increment;
            } else if ( e.Delta < 0 ) {
                new_val = this.Value - this.Increment;
            } else {
                return;
            }
            if ( this.Minimum <= new_val && new_val <= this.Maximum ) {
                this.Value = new_val;
            }
        }    
    }
}