Compact Framework 的手指手势支持

• 下载源代码 - 9.41 KB

引言

让你的 Windows Mobile 应用程序与 iPhone 竞争可能很困难。这里有一个快速的方法，可以在你的 Windows Forms 上获得手指势态支持。这个小片段可以为你的移动应用程序集成四向势态支持。

Using the Code

只需复制并粘贴类级别变量和两个事件，你就能立即获得势态支持。

public partial class Form1 :  Form
{

    private   int  startPositionY = 0;
    private   int  startPositionX = 0;
    //Configurable Points for your device so you can support 
    //different screen sizes . This would work on a 240x320 
    // To support a 320x240 you can switch the values
    // to support a 240x240 make them both 25
    private   const   int  Touch_ThresholdY = 100; 
    private   const   int  Touch_ThresholdX = 25;  

    public  Form1()
    {
        InitializeComponent();
    }

    private   void  Form1_MouseDown( object  sender,  MouseEventArgs  e)
    {
        startPositionY = e.Y;
        startPositionX = e.X;
    }

    private   void  Form1_MouseUp( object  sender,  MouseEventArgs  e)
    {
        if  (startPositionX > e.X && startPositionY < e.Y) 
        {
            if  ((e.Y - startPositionY) > Touch_ThresholdY)
            {
                 MessageBox .Show(\cf4 "Finger Down" );
            }
            else   if  ((startPositionX - e.X) > Touch_ThresholdX)
            {
                 MessageBox .Show(\cf4 "Finger Left" );
            }
        }
        else   if  (startPositionX < e.X && startPositionY > e.Y) 
        {
            if  ((startPositionY - e.Y) > Touch_ThresholdY)
            {
                 MessageBox .Show(\cf4 "Finger Up" );
            }
            else   if  ((e.X - startPositionX) > Touch_ThresholdX)
            {
                 MessageBox .Show(\cf4 "Finger Right" );
            }
        }
    }
}