请问如何用VC编程实现改变光驱的盘符?(67分!!!!!!!!!!!!!!!!!!!!!!!!!!!)

to: tryibest;
限你48小时把MSDN修好，不得有误。

/*
DLEDIT  -- Drive Letter Assignment EditorPlatforms:
   This program requires Windows 2000.Command-line syntax:
   DLEDIT <drive letter> <NT device name>      -- Adds a drive letter
   DLEDIT -r <drive letter>                    -- Removes a drive letterCommand-line examples:   If E: refers to the CD-ROM drive, use the following commands to
   make F: point to the CD-ROM drive instead.    DLEDIT -r E:   DLEDIT F:\ \Device\CdRom0*****************************************************************
WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING     This program will change drive letter assignments, and the
   changes persist through reboots. Do not remove drive letters
   of your hard disks if you do not have this program on floppy
   disk or you might not be able to access your hard disks again!
*****************************************************************
*/#define _WIN32_WINNT 0x0500#include <windows.h>
#include <stdio.h>#if defined (DEBUG)
   static void DebugPrint (LPCSTR pszMsg, DWORD dwErr);
   #define DEBUG_PRINT(pszMsg, dwErr) DebugPrint(pszMsg, dwErr)
#else
   #define DEBUG_PRINT(pszMsg, dwErr) NULL
#endif#pragma warning (disable : 4800)void PrintHelp (LPCSTR pszAppName);/*--------------------------------------------------------------------
The main function is the main routine. It parses the command-line
arguments and either removes or adds a drive letter.Parameters
   argc
      Count of the command-line arguments
   argv
      Array of pointers to the individual command-line arguments--------------------------------------------------------------------*/
void main (int argc, char **argv)
{
   char * pszDriveLetter,
        * pszNTDevice,
        * pszOptions;   char szUniqueVolumeName[MAX_PATH];
   char szDriveLetterAndSlash[4];
   char szDriveLetter[3];   bool  fRemoveDriveLetter;
   bool  fResult;   if (argc != 3)
   {
      PrintHelp(argv[0]);
      return;
   }   // Use the command line to see if user wants to add or remove the
   // drive letter. Do this by looking for the -r option.   fRemoveDriveLetter = !lstrcmpi (argv[1], "-r");   if (fRemoveDriveLetter)
   {
      // User wants to remove the drive letter. Command line should
      // be: dl -r <drive letter>      pszOptions       = argv[1];
      pszDriveLetter   = argv[2];
      pszNTDevice      = NULL;
   }
   else
   {
      // User wants to add a drive letter. Command line should be:
      // dl <drive letter> <NT device name>      pszOptions       = NULL;
      pszDriveLetter   = argv[1];
      pszNTDevice      = argv[2];
   }   // GetVolumeNameForVolumeMountPoint, SetVolumeMountPoint, and
   // DeleteVolumeMountPoint require drive letters to have a trailing
   // backslash. However, DefineDosDevice requires that the trailing
   // backslash be absent. So, we'll use:
   //
   //    szDriveLetterAndSlash     for the mount point APIs
   //    szDriveLetter             for DefineDosDevice
   //
   // This way, we can accept command lines that use a: or a:\
   // for drive letters without writing back to the original command-
   // line argument.   szDriveLetter[0] = pszDriveLetter[0];
   szDriveLetter[1] = ':';
   szDriveLetter[2] = '\0';   szDriveLetterAndSlash[0] = pszDriveLetter[0];
   szDriveLetterAndSlash[1] = ':';
   szDriveLetterAndSlash[2] = '\\';
   szDriveLetterAndSlash[3] = '\0';   // Now add or remove the drive letter.   if (fRemoveDriveLetter)
   {
      fResult = DeleteVolumeMountPoint (szDriveLetterAndSlash);      if (!fResult)
         printf("error %lu: couldn't remove %s\n",
                GetLastError(), szDriveLetterAndSlash);
   }
   else
   {
      // To add a drive letter that persists through reboots, use
      // SetVolumeMountPoint. This requires the unique volume name of
      // the device to which the new drive letter will refer. To get
      // the unique volume name, use GetVolumeNameForVolumeMountPoint;
      // it requires the drive letter to already exist. So, we first
      // define the drive letter as a symbolic link to the device
      // name. After we have the unique volume name the new drive
      // letter will point to, we must delete the symbolic link
      // because the mount manager allows only one reference to a
      // device at a time (the new one to be added).      fResult = DefineDosDevice (DDD_RAW_TARGET_PATH, szDriveLetter,
                                 pszNTDevice);      if (fResult)
      {
          // If GetVolumeNameForVolumeMountPoint fails, then
          // SetVolumeMountPoint will also fail. However, we must call
          // DefineDosDevice to remove the temporary symbolic link.
          // Therefore, set szUniqueVolume to a known empty string.         if (!GetVolumeNameForVolumeMountPoint (szDriveLetterAndSlash,
                  szUniqueVolumeName,
                  MAX_PATH))
         {
            DEBUG_PRINT("GetVolumeNameForVolumeMountPoint failed",
                        GetLastError());
            szUniqueVolumeName[0] = '\0';
         }         fResult = DefineDosDevice (
                      DDD_RAW_TARGET_PATH|DDD_REMOVE_DEFINITION|
                      DDD_EXACT_MATCH_ON_REMOVE, szDriveLetter,
                      pszNTDevice);         if (!fResult)
            DEBUG_PRINT("DefineDosDevice failed", GetLastError());         fResult = SetVolumeMountPoint (szDriveLetterAndSlash,
                        szUniqueVolumeName);         if (!fResult)
            printf ("error %lu: could not add %s\n", GetLastError(),
                    szDriveLetterAndSlash);
      }
   }
}/*-------------------------------------------------------------------
The PrintHelp function prints the command-line usage help.Parameters
   pszAppName
      The name of the executable. Used in displaying the help.-------------------------------------------------------------------*/
void PrintHelp (LPCSTR pszAppName)
{
   printf("Adds/removes a drive letter assignment for a device.\n\n");
   printf("Usage: %s <Drive> <Device name>   add a drive letter\n", pszAppName);
   printf("       %s -r <Drive>              remove a drive letter\n\n", pszAppName);
   printf("Example: %s e:\\ \\Device\\CdRom0\n", pszAppName);
   printf("         %s -r e:\\\n", pszAppName);
}#if defined (DEBUG)
/*--------------------------------------------------------------------
The DebugPrint function prints a string to STDOUT.Parameters
   pszMsg
      The string to be printed to STDOUT.
   dwErr
      The error code; usually obtained from GetLastError. If dwErr is
      zero, no error code is added to the error string. If dwErr is
      nonzero, the error code will be printed in the error string.
--------------------------------------------------------------------*/
void DebugPrint (LPCSTR pszMsg, DWORD dwErr)
{
   if (dwErr)
      printf("%s: %lu\n", pszMsg, dwErr);
   else
      printf("%s\n", pszMsg);
}
#endifWhen building this sample program, use the following makefile.APPVER = 5.0
TARGETOS = WINNT!include <win32.mak>PROJ = DLEDITall: $(PROJ).exePROJ_OBJS = dledit.obj.cpp.obj:
    $(cc) $(cdebug) $(cflags) $(cvars) $<$(PROJ).exe: $(PROJ_OBJS)
    $(link) $(ldebug) $(conlflags)    $(PROJ_OBJS)     -out:$(PROJ).exe     $(conlibs)clean:
    del *.bak
    del *.opt
    del *.pdb
    del *.objcleaner: clean
    del *.exe

呵呵谁来实现一下98下的这个功能呀?用汇编, Dos命令也行呵呵呵只要VC能调用即可

我用RegMonitor跟出来了，我的光驱是标准光驱，设置如下：
HKEY_LOCAL_MACHINE\Enum\SCSI\________ATAPI_CDROM_____1\MF&CHILD0001&PCI&VEN_1106&DEV_0571&SUBSYS_05711106&REV_06&BUS_00&DEV_07&FUNC_0110
键值:UserDriveLetterAssignment="JJ"即盘符是J，其他类似！给分吧！

调试易

请问如何用VC编程实现改变光驱的盘符?(67分!!!!!!!!!!!!!!!!!!!!!!!!!!!)

解决方案 »