C# winCE5.0开发右键效果解决方案

用VS2008开发C#语言wince程序,发现程序里右键捕获不到,采集器上点也没反应,上网查好像有个c++版本的,看不懂啊,下面我给出C#实现右键效果的解决方案,请各位多多优化。 

 

首先控件ContextMenu 和 Timer 

 C# winCE5.0开发右键效果解决方案

​设置contextMenu1

C# winCE5.0开发右键效果解决方案

在dataGrid里实现右键点击,事件dataGrid1_MouseDown 按下鼠标按钮事件。

上代码

 

 
public int _x;
 public int _y;
 private void dataGrid1_MouseDown(object sender, MouseEventArgs e)
        {
            System.Drawing.Point Pt = new Point(e.X, e.Y);
            DataGrid.HitTestInfo Ht = dataGrid1.HitTest(Pt.X, Pt.Y);
            //this.dataGrid1.CurrentCell = new DataGridCell(Ht.Row, Ht.Column);
            //this.dataGrid1.Select(Ht.Row); 
            if (Ht.Row >= 0 && Ht.Column >= 0)
            {
                _x = e.X + 2;//记录鼠标当前坐标 
                _y = e.Y + 1;//同上(priorPoint前面已经声明) 
                SHRGINFO shr = new SHRGINFO();
                shr.cbSize = Marshal.SizeOf(typeof(SHRGINFO));
                shr.dwFlags = SHRGFLags.SHRG_RETURNCMD;
                shr.ptDownX = MousePosition.X - 2;
                shr.ptDownY = MousePosition.Y - 8;
                shr.hwndClient = GetActiveWindow();
                int ret = SHRecognizeGesture(ref shr);
                if (ret == 1000)
                {
                    timer1.Enabled = true;//开启计时器
                }
            }
        }
 internal struct SHRGINFO
        {
            public int cbSize;
            public IntPtr hwndClient;
            public int ptDownX;
            public int ptDownY;
            public SHRGFLags dwFlags;
        }
        [Flags]
        internal enum SHRGFLags
        {
            SHRG_RETURNCMD = 0x00000001,
            SHRG_NOTIFYPARENT = 0x00000002,
            SHRG_LONGDELAY = 0x00000008,
            SHRG_NOANIMATION = 0x00000010,
        }
        [DllImport("aygshell")]
        extern private static int SHRecognizeGesture(ref SHRGINFO shr);
        [DllImport("coredll.dll", SetLastError = true)]
        public static extern IntPtr GetActiveWindow();  

 


DataGrid.HitTestInfo

我也是第一次用,把坐标传进去就能知道当前左边是哪列哪行,有没有数据,下面做出判断有数据了才显示。

ret == 1000圆圈正好一圈
       [DllImport("aygshell")]
        extern private static int SHRecognizeGesture(ref SHRGINFO shr);
        [DllImport("coredll.dll", SetLastError = true)]
        public static extern IntPtr GetActiveWindow();  
启用采集器DLL接口程序。

MousePosition.X - 2 
当前鼠标-2这个是控制圆圈的,不在鼠标中建,我给调了调,
_X  _Y  会在时间里用到。timer1的事件,如果在此弹出右键菜单因为资源没有被释放,所以会报错的,只能启动下一个事件,我写在了timer1_Tick里,并使用timer1.Enabled = true启用事件


  
private void timer1_Tick(object sender, EventArgs e)
        {
            string pids = this.dataGrid1[this.dataGrid1.CurrentRowIndex, 0].ToString();
            if (pids != "")
            {
                contextMenu1.Show(dataGrid1, new Point(_x, _y));//弹出上下文菜单  
                timer1.Enabled = false;
            }
        }



要写上contextMenu1绑定的控件dataGrid1

this.dataGrid1[this.dataGrid1.CurrentRowIndex, 0].ToString();可获得当前选中行某列。



 

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