一、添加组件

1、新建组件

      项目名右击->[添加]->[组件]->[名称]输入TouchController.cs。生成一个以TouchController为类名的组件。

2、添加字段

private Control _control = null;//控件

private bool _bIsMoved = false;//标识是否正在移动。目的获取{dy}次接触屏幕的坐标。

private int _nX;//{dy}次接触屏幕的坐标水平分量x

private int _nY;//{dy}次接触屏幕的坐标垂直分量y

3、添加方法

/// <summary>
/// 设置控件
/// </summary>
/// <param name="control"></param>
public void SetControl(Control control)
{
    _control = control;
    if (_control != null)
    {
        _control.MouseMove += new MouseEventHandler(Control_MouseMove);
        _control.MouseUp += new MouseEventHandler(Control_MouseUp);
    }
}

4、添加属性

/// <summary>
/// 获取或设置控件
/// </summary>
public Control Control
{
    get
    {
        return _control;
    }
    set
    {
        this.SetControl(value);
    }
}

5、编写划屏事件数据
/// <summary>
/// 划屏事件数据
/// </summary>
public class TouchEventArgs : EventArgs
{
    private Point _pStart;
    private Point _pEnd;

    /// <summary>
    /// 开始坐标
    /// </summary>
    public Point SPoint
    {
        get
        {
            return _pStart;
        }
        set
        {
            _pStart = value;
        }
    }

    /// <summary>
    /// 结束坐标
    /// </summary>
    public Point EPoint
    {
        get
        {
            return _pEnd;
        }
        set
        {
            _pEnd = value;
        }
    }

    /// <summary>
    /// 构造函数
    /// </summary>
    public TouchEventArgs()
    {
        _pStart = new Point(0, 0);
        _pEnd = new Point(0, 0);
    }

    /// <summary>
    /// 构造函数
    /// </summary>
    /// <param name="pStart"></param>
    /// <param name="pEnd"></param>
    public TouchEventArgs(Point pStart, Point pEnd)
    {
        _pStart = pStart;
        _pEnd = pEnd;
    }
}

5、注册划屏事件

public delegate void TouchEvent(object sender, TouchEventArgs e);//事件代理

public event TouchEvent TouchUp;//向上划的事件
public event TouchEvent TouchDown;//向下划的事件
public event TouchEvent TouchLeft;//向左划的事件
public event TouchEvent TouchRight;//向右划的事件

//获取{dy}次触屏坐标

private void Control_MouseMove(object sender, MouseEventArgs e)
{
    if (e.Button == MouseButtons.Left && !_bIsMoved)
    {
        _bIsMoved = true;
        _nX = e.X;
        _nY = e.Y;
    }
}

//离开屏幕时，坐标和{dy}次触屏坐标的对比，注册了向上向下向左向右划的事件

private void Control_MouseUp(object sender, MouseEventArgs e)
{
    int X = e.X - _nX;
    int Y = e.Y - _nY;
    if (Y > -X && Y > X)
    {
        #region ↑向上划
        if (TouchUp != null)
        {
            TouchUp(sender, new TouchEventArgs(new Point(_nX, _nY), new Point(e.X, e.Y)));
        }
        #endregion
    }
    else if (Y < -X && Y < X)
    {
        #region ↓向下划
        if (TouchDown != null)
        {
            TouchDown(sender, new TouchEventArgs(new Point(_nX, _nY), new Point(e.X, e.Y)));
        }
        #endregion
    }
    else if (Y < -X && Y > X)
    {
        #region ←向左划
        if (TouchLeft != null)
        {
            TouchLeft(sender, new TouchEventArgs(new Point(_nX, _nY), new Point(e.X, e.Y)));
        }
        #endregion
    }
    else if (Y > -X && Y < X)
    {
        #region →向右划
        if (TouchRight != null)
        {
            TouchRight(sender, new TouchEventArgs(new Point(_nX, _nY), new Point(e.X, e.Y)));
        }
        #endregion
    }
    _bIsMoved = false;
}

二、演示

在工具栏向窗口拖一个TouchController组件，属性设置Control。之前切换到事件窗口，注册需要的向上向下向左向右划的事件，然后添加你要的代码。

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