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

BOOL CVogueRAPI::InitRapi()
{
 LPTSTR pDllPath = new TCHAR[MAX_PATH + 10];
 GetSystemDirectory(pDllPath, MAX_PATH);
 CString strDllPathName(pDllPath);
 strDllPathName += "//Rapi.dll";
TRACE("%s/n",strDllPathName); //C:/WINDOWS/system32/rapi.dll
 hInst = LoadLibrary(strDllPathName);
 if(hInst)
 {
  //CeRapiInit = (FARPROC) GetProcAddress(hInst, "CeRapiInit");
  CeRapiInitEx = (pfnFnucA) GetProcAddress(hInst, "CeRapiInitEx");
  CeRapiUninit = (FARPROC) GetProcAddress(hInst, "CeRapiUninit");
  CeCreateFile = (pfnFunc0)GetProcAddress(hInst, "CeCreateFile");
  CeWriteFile = (pfnFunc1)GetProcAddress(hInst, "CeWriteFile");
  CeCloseHandle = (pfnFunc2)GetProcAddress(hInst, "CeCloseHandle");
  CeFindFirstFile = (pfnFunc3)GetProcAddress(hInst, "CeFindFirstFile");
  CeGetFileSize = (pfnFunc4)GetProcAddress(hInst, "CeGetFileSize");
  CeReadFile = (pfnFunc5)GetProcAddress(hInst, "CeReadFile");
  CeFindNextFile = (pfnFunc6)GetProcAddress(hInst, "CeFindNextFile");
  CeCreateDirectory = (pfnFunc7)GetProcAddress(hInst, "CeCreateDirectory");
  CeCreateProcess = (pfnFunc8)GetProcAddress(hInst, "CeCreateProcess");
  CeGetSystemInfo = (pfnFunc9)GetProcAddress(hInst, "CeGetSystemInfo");

  return TRUE;
 }
 else
 {
  FreeLibrary(hInst);

  return FALSE;
 }

 return FALSE;
}

 

2.  设备与PC连接

BOOL CVogueRAPI::RapiConnectDevice()
{
    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
    DWORD dwWaitResult = 0;  //等待初始化完成事件的变量
    HRESULT hRapiResult = NULL; //CeRapiInitEx的返回HANDLE
 
    if(m_bRapiInitFlag == FALSE) //全局的一个标志,如果初始化成功就不再重复
    {
        struRapiInit.cbSize = sizeof(RAPIINIT);  //填满该结构体仅有的三个成员
        struRapiInit.hrRapiInit = NULL;    //明知是输出参数也顺手填一下, 以防万一
        struRapiInit.heRapiInit = NULL;
  
        hRapiResult = CeRapiInitEx(&struRapiInit);  //关键点
  dwWaitResult = WaitForSingleObject(struRapiInit.heRapiInit, 2000);  //关键点
  
        if(hRapiResult == S_OK && struRapiInit.hrRapiInit == S_OK &&
            dwWaitResult != WAIT_TIMEOUT)    //三个返回值都判断, 以保证正确性
        {
   m_bRapiInitFlag = TRUE;
   return TRUE;
        }
        else
        {
            return FALSE;
        }
    }
    else
    {
  m_bRapiInitFlag = TRUE;
  return TRUE;
    }
}

 

3. 从PC传输文件到设备

BOOL CVogueRAPI::CopyFiletoWinCE(CString csPCFilename, CString csCEFilename)
{
 CFile PCFile;
 HANDLE hCEFile;
 char cTemp[BUFFER_SIZE];
 DWORD nbytes = 0;
 int iFileLen = 0;
 int iFileNum = 0;
 int i = 0;

 PCFile.Open(csPCFilename, CFile::modeRead |CFile::typeBinary);
 iFileLen = PCFile.GetLength();
 iFileNum = iFileLen / BUFFER_SIZE;

 BSTR bstr = csCEFilename.AllocSysString();
 SysFreeString(bstr);

 hCEFile = CeCreateFile(bstr, GENERIC_READ | GENERIC_WRITE, 0, NULL,
      OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
 if(INVALID_HANDLE_VALUE == hCEFile) //文件打开失败
 {
  return FALSE;
 }
 
 for(i = 0;i < iFileNum;i++)
 {
  memset(cTemp,0,sizeof(char) * BUFFER_SIZE);
  if(PCFile.Read(cTemp, BUFFER_SIZE) >= 1)
  {
   CeWriteFile(hCEFile, cTemp, BUFFER_SIZE, &nbytes, NULL);
  }
 }
 memset(cTemp,0,sizeof(char) * BUFFER_SIZE);
 if(PCFile.Read(cTemp, iFileLen % BUFFER_SIZE) >= 1)
 {
  CeWriteFile(hCEFile, cTemp, iFileLen % BUFFER_SIZE, &nbytes, NULL);
 }

 CeCloseHandle(hCEFile);
 PCFile.Close();
 CeRapiUninit();

 return TRUE;
}