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
设置contextMenu1
在dataGrid里实现右键点击，事件dataGrid1_MouseDown 按下鼠标按钮事件。
上代码
[csharp][/csharp] view plaincopyprint?
- 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
[csharp][/csharp] view plaincopyprint?
- 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。
