WinCE通信

using System;
 2 
 3 using System.Collections.Generic;
 4 using System.Text;
 5 using System.Runtime.InteropServices;
 6 
 7 namespace Microwind.SmartRfid.MockProvider
 8 {
 9 publicclass WinCEApi
10  {
11 publicconstint LMEM_FIXED =0x0000;
12 publicconstint LMEM_ZEROINIT =0x0040;
13 publicconstint LPTR = (LMEM_FIXED | LMEM_ZEROINIT);
14 
15  [DllImport(@"\windows\coredll.dll")]
16 publicstaticextern IntPtr FindWindow(string ClassName, string WindowName);
17 
18  [DllImport(@"\windows\coredll.dll")]
19 publicstaticextern IntPtr SendMessage(IntPtr hwnd, int wMsg, IntPtr wParam, IntPtr lParam);
20 
21  [DllImport("coredll.dll")]
22 publicstaticextern IntPtr LocalAlloc(int flag, int size);
23 
24  [DllImport("coredll.dll")]
25 publicstaticextern IntPtr LocalFree(IntPtr p);
26 
27 publicstatic IntPtr AllocHGlobal(int cb)
28  {
29  IntPtr hMemory =new IntPtr();
30  hMemory = LocalAlloc(LPTR, cb);
31 return hMemory;
32  }
33 
34 publicclass MessageConsts
35  {
36 publicconstint WM_COPYDATA =0x004A;
37 privateconstint USER =0x0400;
38  }
39 
40 publicstruct COPYDATASTRUCT
41  {
42 public IntPtr dwData;
43 publicint cbData;
44 public IntPtr lpData;
45  }
46  }
47 }

using System;
 2 
 3 using System.Collections.Generic;
 4 using System.ComponentModel;
 5 using System.Data;
 6 using System.Drawing;
 7 using System.Text;
 8 using System.Windows.Forms;
 9 using System.Runtime.InteropServices;
10 
11 namespace Microwind.SmartRfid.MockProvider
12 {
13 publicpartialclass MessageHandlerForm : Microsoft.WindowsCE.Forms.MessageWindow
14  {
15 publicconststring WindowTitle ="B5F29B02-8362-4dd5-8153-8AD8803C98B4";
16 private List<string> _tagList =new List<string>();
17 public List<string> TagList
18  {
19 get
20  {
21 return _tagList;
22  }
23  }
24 privatevoid ScanTags(string tags)
25  {
26 if (string.IsNullOrEmpty(tags)) return;
27 string[] tagArr = tags.Split(',');
28  _tagList.AddRange(tagArr);
29  }
30 protectedoverridevoid WndProc(ref Microsoft.WindowsCE.Forms.Message m)
31  {
32 switch (m.Msg)
33  {
34 case WinCEApi.MessageConsts.WM_COPYDATA:
35  WinCEApi.COPYDATASTRUCT copyDataStruct = (WinCEApi.COPYDATASTRUCT)Marshal.PtrToStructure(m.LParam, typeof(WinCEApi.COPYDATASTRUCT));
36 string str = Marshal.PtrToStringUni(copyDataStruct.lpData);
37  ScanTags(str);
38 break;
39 default:
40 base.WndProc(ref m);
41 break;
42  }
43  }
44 public MessageHandlerForm()
45  {
46  Text = WindowTitle;
47  }
48  }
49 }

using System;
 2 
 3 using System.Collections.Generic;
 4 using System.ComponentModel;
 5 using System.Data;
 6 using System.Drawing;
 7 using System.Text;
 8 using System.Windows.Forms;
 9 using System.Runtime.InteropServices;
10 
11 namespace Microwind.SmartRfid.MockProvider
12 {
13 publicpartialclass MainForm : Form
14  {
15 public MainForm()
16  {
17  InitializeComponent();
18  }
19 
20 privatevoid btnSend_Click(object sender, EventArgs e)
21  {
22  IntPtr hWin = WinCEApi.FindWindow(null, MessageHandlerForm.WindowTitle);
23 if (hWin != IntPtr.Zero)
24  {
25 string tags = textBox1.Text;
26 if (tags.Length ==0) return;
27 
28  WinCEApi.COPYDATASTRUCT copyDataStruct;
29  copyDataStruct.cbData = (tags.Length +1) *2;
30  copyDataStruct.lpData = WinCEApi.LocalAlloc(WinCEApi.LPTR, copyDataStruct.cbData);
31  Marshal.Copy(tags.ToCharArray(), 0, copyDataStruct.lpData, tags.Length);
32  copyDataStruct.dwData = (IntPtr)100;
33  IntPtr lParam = WinCEApi.AllocHGlobal(copyDataStruct.cbData);
34  Marshal.StructureToPtr(copyDataStruct, lParam, false);
35 
36  WinCEApi.SendMessage(hWin, WinCEApi.MessageConsts.WM_COPYDATA, IntPtr.Zero, lParam);
37  }
38  }
39 
40 privatevoid button1_Click(object sender, EventArgs e)
41  {
42  Close();
43  }
44  }
45 }