RAPI编程之一

今天刚开始学习RAPI编程，先将今天学习的成果放出来，大家学习。

如果代码有问题，请提出，多谢!

 

在PC上使用VC6，好久没有用它了。一直在EVC4下编程，呵呵...

RAPI功能的实现，需要rapi.dll和rapi.h。在以下的实现中，Link的动态库是: C:/WINDOWS/system32/rapi.dll。没有使用rapi.h头文件，只是将必要的结构定义复制到工程中。如RAPIINIT 的定义。对动态库中的函数，用GetProcAddress()来加载。

1. RAPI初始化

 1 BOOL CVogueRAPI::InitRapi()
 2 {
 3  LPTSTR pDllPath = new TCHAR[MAX_PATH + 10];
 4  GetSystemDirectory(pDllPath, MAX_PATH);
 5  CString strDllPathName(pDllPath);
 6  strDllPathName += "//Rapi.dll";
 7 TRACE("%s/n",strDllPathName); //C:/WINDOWS/system32/rapi.dll
 8  hInst = LoadLibrary(strDllPathName);
 9  if(hInst)
10  {
11   //CeRapiInit = (FARPROC) GetProcAddress(hInst, "CeRapiInit");
12   CeRapiInitEx = (pfnFnucA) GetProcAddress(hInst, "CeRapiInitEx");
13   CeRapiUninit = (FARPROC) GetProcAddress(hInst, "CeRapiUninit");
14   CeCreateFile = (pfnFunc0)GetProcAddress(hInst, "CeCreateFile");
15   CeWriteFile = (pfnFunc1)GetProcAddress(hInst, "CeWriteFile");
16   CeCloseHandle = (pfnFunc2)GetProcAddress(hInst, "CeCloseHandle");
17   CeFindFirstFile = (pfnFunc3)GetProcAddress(hInst, "CeFindFirstFile");
18   CeGetFileSize = (pfnFunc4)GetProcAddress(hInst, "CeGetFileSize");
19   CeReadFile = (pfnFunc5)GetProcAddress(hInst, "CeReadFile");
20   CeFindNextFile = (pfnFunc6)GetProcAddress(hInst, "CeFindNextFile");
21   CeCreateDirectory = (pfnFunc7)GetProcAddress(hInst, "CeCreateDirectory");
22   CeCreateProcess = (pfnFunc8)GetProcAddress(hInst, "CeCreateProcess");
23   CeGetSystemInfo = (pfnFunc9)GetProcAddress(hInst, "CeGetSystemInfo");
24   return TRUE;
25  }
26  else
27  {
28   FreeLibrary(hInst);
29   return FALSE;
30  }
31  return FALSE;
32 }

2.  设备与PC连接

 1 BOOL CVogueRAPI::RapiConnectDevice()
 2 {
 3     RAPIINIT struRapiInit;  //CeRapiInitEx函数要求的入口参数: 定义在rapi.h中, 为了不include "rapi.h", 将其定义复制到工程中
 4     DWORD dwWaitResult = 0;  //等待初始化完成事件的变量
 5     HRESULT hRapiResult = NULL; //CeRapiInitEx的返回HANDLE
 6  
 7     if(m_bRapiInitFlag == FALSE) //全局的一个标志,如果初始化成功就不再重复
 8     {
 9         struRapiInit.cbSize = sizeof(RAPIINIT);  //填满该结构体仅有的三个成员
10         struRapiInit.hrRapiInit = NULL;    //明知是输出参数也顺手填一下, 以防万一
11         struRapiInit.heRapiInit = NULL;
12   
13         hRapiResult = CeRapiInitEx(&struRapiInit);  //关键点
14   dwWaitResult = WaitForSingleObject(struRapiInit.heRapiInit, 2000);  //关键点
15   
16         if(hRapiResult == S_OK && struRapiInit.hrRapiInit == S_OK &&
17             dwWaitResult != WAIT_TIMEOUT)    //三个返回值都判断, 以保证正确性
18         {
19    m_bRapiInitFlag = TRUE;
20    return TRUE;
21         }
22         else
23         {
24             return FALSE;
25         }
26     }
27     else
28     {
29   m_bRapiInitFlag = TRUE;
30   return TRUE;
31     }
32 }

3. 从PC传输文件到设备

 1 BOOL CVogueRAPI::CopyFiletoWinCE(CString csPCFilename, CString csCEFilename)
 2 {
 3  CFile PCFile;
 4  HANDLE hCEFile;
 5  char cTemp[BUFFER_SIZE];
 6  DWORD nbytes = 0;
 7  int iFileLen = 0;
 8  int iFileNum = 0;
 9  int i = 0;
10  PCFile.Open(csPCFilename, CFile::modeRead |CFile::typeBinary);
11  iFileLen = PCFile.GetLength(); 
12  iFileNum = iFileLen / BUFFER_SIZE;
13  BSTR bstr = csCEFilename.AllocSysString(); 
14  SysFreeString(bstr);
15  hCEFile = CeCreateFile(bstr, GENERIC_READ | GENERIC_WRITE, 0, NULL,
16       OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
17  if(INVALID_HANDLE_VALUE == hCEFile) //文件打开失败
18  {
19   return FALSE;
20  }
21  
22  for(i = 0;i < iFileNum;i++)
23  {
24   memset(cTemp,0,sizeof(char) * BUFFER_SIZE);
25   if(PCFile.Read(cTemp, BUFFER_SIZE) >= 1)
26   {
27    CeWriteFile(hCEFile, cTemp, BUFFER_SIZE, &nbytes, NULL);
28   }
29  }
30  memset(cTemp,0,sizeof(char) * BUFFER_SIZE);
31  if(PCFile.Read(cTemp, iFileLen % BUFFER_SIZE) >= 1)
32  {
33   CeWriteFile(hCEFile, cTemp, iFileLen % BUFFER_SIZE, &nbytes, NULL);
34  }
35  CeCloseHandle(hCEFile);
36  PCFile.Close();
37  CeRapiUninit();
38  return TRUE;
39 }

 

posted @ 2016-03-07 08:48  91program  阅读(474)  评论(0)  编辑  收藏  举报