wince 6.0 动态加载驱动 CreateFile 返回 55解决方法_WinCE

wince 6.0 动态加载驱动 CreateFile 返回 55

C/C++ code

  LONG a=RegCreateKeyEx(HKEY_LOCAL_MACHINE,DEV_KEY, 0, NULL, REG_OPTION_NON_VOLATILE, KEY_ALL_ACCESS, NULL,&m_hKey,&dwDisp);    LONG b=RegSetValueEx(m_hKey,TEXT("Order"), 0, REG_DWORD, (const BYTE *) szValue, sizeof(DWORD));    LONG c=RegSetValueEx(m_hKey,TEXT("Index"), 0, REG_DWORD, (const BYTE *) szValue1, sizeof(DWORD));    LONG e=RegSetValueEx(m_hKey,TEXT("Dll"), 0, REG_SZ, (LPBYTE)TEXT("\\Program Files\\wdll\\wdll.dll"), 1 + sizeof(TEXT("\\Program Files\\wdll\\wdll.dll")));    LONG d=RegSetValueEx(m_hKey,TEXT("Prefix"), 0, REG_SZ ,(LPBYTE)TEXT("FKE"),  1 + sizeof(TEXT("FKE")));    DWORD dwParam = 89;   //HANDLE hd = ActivateDeviceEx(DEV_KEY,NULL,0,&dwParam);       HANDLE hd = ActivateDeviceEx(DEV_KEY,NULL,0,&dwParam);   if(hd==NULL){printf("%d",GetLastError());return 0;}/*HANDLE hDriver = CreateFile(TEXT("FKE1:"),   GENERIC_READ | GENERIC_WRITE,      0,      NULL,      OPEN_EXISTING,      FILE_ATTRIBUTE_NORMAL,      NULL);*/HANDLE hDriver = CreateFile(TEXT("FKE1:"),   GENERIC_READ | GENERIC_WRITE,      0,      NULL,      OPEN_EXISTING,      0,      NULL);   if(hDriver==INVALID_HANDLE_VALUE){       printf("%d",GetLastError());    DeactivateDevice(hd);    return 0;   }

高手来说明一下或者是dll文件的问题

------解决方案--------------------
正要回的時候看到結帖率=0....... 加油

------解决方案--------------------

探讨

正要回的時候看到結帖率=0....... 加油

------解决方案--------------------
返回55是说明驱动不存在，很有可能是在HKEY_LOCAL_MACHINE\Drivers\BuiltIn\下面没有对应的注册项，加上去应该就没有问题了！
------解决方案--------------------
Registry "Dll" 不可以寫路徑, 請將該 dll copy to \Windows folder 下.

Paul, Chao @ Techware

------解决方案--------------------
给个例子：

C/C++ code

RegisterDevice (L"GGD", 1, L"GPRS.dll", NULL);Handle hSMD = CreateFile(L"GGD1:", GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, 0 );