1. 建个基于Dialog的VC6程序；

2. 添加以下代码到***Dlg.cpp中；

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#include <setupapi.h>
#include <shlwapi.h>
#include <Rpcdce.h>
#pragma comment( lib, "Rpcrt4.lib" )
#pragma comment(lib, "setupapi.lib")
#pragma comment(lib, "shlwapi.lib")

3. 加上两个Button —— Button1 和 Button2; 及函数 OnButton1(), OnButton2();

4. 添加以下代码到***Dlg.cpp中；

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/

HDEVINFO hDevInfo = NULL;

// 出错信息

void FormatMSG(DWORD dwError, LPTSTR * lpszMsg)
{
    BOOL bOk = FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM
        | FORMAT_MESSAGE_ALLOCATE_BUFFER,
        NULL,
        dwError,
        MAKELANGID(LANG_CHINESE, SUBLANG_CHINESE_SIMPLIFIED),
        (LPTSTR)lpszMsg,
        0,
        NULL);
 
 if (!bOk)
 {
  HMODULE hDll = LoadLibraryEx(_T("netmsg.dll"),
   NULL,
   DONT_RESOLVE_DLL_REFERENCES);
  if (NULL != hDll)
  {
   FormatMessage(FORMAT_MESSAGE_FROM_HMODULE |  
    FORMAT_MESSAGE_FROM_SYSTEM,
    hDll,
    dwError,
    MAKELANGID(LANG_CHINESE, SUBLANG_CHINESE_SIMPLIFIED),
    (LPTSTR)lpszMsg,
    0,
    NULL);
   FreeLibrary(hDll);
  }
 }
}

BOOL ChangeStatus(DWORD NewStatus,
                  DWORD SelectedItem,  
                  HDEVINFO  hDevInfo)
{
 LPTSTR lpszMsg = NULL;
 HCURSOR hCursor = NULL;
 try
 {
  SP_PROPCHANGE_PARAMS PropChangeParams = {sizeof(SP_CLASSINSTALL_HEADER)};
  SP_DEVINFO_DATA DeviceInfoData = {sizeof(SP_DEVINFO_DATA)};   
  
  hCursor = SetCursor(LoadCursor(NULL, IDC_WAIT));
  
  // Get a handle to the Selected Item.
  if (!SetupDiEnumDeviceInfo(hDevInfo, SelectedItem, &DeviceInfoData))
  {
   FormatMSG(GetLastError(), &lpszMsg);
   throw lpszMsg;
  }
  
  // Set the PropChangeParams structure.
  PropChangeParams.ClassInstallHeader.InstallFunction = DIF_PROPERTYCHANGE;
  PropChangeParams.Scope = DICS_FLAG_GLOBAL;
  PropChangeParams.StateChange = NewStatus;
  
  if (!SetupDiSetClassInstallParams(  hDevInfo,
           &DeviceInfoData,
              (SP_CLASSINSTALL_HEADER *)&PropChangeParams,
           sizeof(PropChangeParams))  )
  {
   FormatMSG(GetLastError(), &lpszMsg);
   throw lpszMsg;
  }
  
  // Call the ClassInstaller and perform the change.
  if ( !SetupDiCallClassInstaller( DIF_PROPERTYCHANGE,
           hDevInfo,
           &DeviceInfoData))
  {
   FormatMSG(GetLastError(), &lpszMsg);
   throw lpszMsg;
  }
  
  SetCursor(hCursor); 
  return TRUE;
 }
 catch (TCHAR * pszError)
 {
  SetCursor(hCursor);
  ::MessageBox(NULL,
   pszError,
   _T("提示"),
   MB_OK);
  if (NULL != lpszMsg)
  {
   LocalFree((HLOCAL)lpszMsg);
  }
  return FALSE;
 }    
}

// 这些设备的启用和禁用主要有此函数实现
// 参数说明,nStatus 可取3个值，-1 ：啥也不做
// 0 禁用设备，1启用设备。
// nIndex用于控制是对光驱，软驱还是对USB启用或禁用
// 也是可取3个值，0 代表软驱，1 代表光驱
// 2 代表USB
// 譬如要对光驱实现禁用，可以这样调用此函数
// ControlDisk(0, 1);
BOOL ControlDisk(int nStatus, int nIndex)
{
 if (-1 == nStatus)
 {
  return FALSE;
 }
 
 LPTSTR lpszMsg = NULL;
 try
 {
  TCHAR * GUIDString = NULL;
  GUID guid;
  ZeroMemory(&guid, sizeof(GUID));
  switch(nIndex)
  {
  case 0:    // 0 代表软驱
   GUIDString = _T("4D36E980-E325-11CE-BFC1-08002BE10318");
   UuidFromString((unsigned char *)GUIDString, &guid);
   break;
  case 1:    // 1 代表光驱
   GUIDString = _T("4D36E965-E325-11CE-BFC1-08002BE10318");
   UuidFromString((unsigned char *)GUIDString, &guid);
   break;
  case 2:    // 2 代表USB
   GUIDString = _T("36FC9E60-C465-11CF-8056-444553540000");
   UuidFromString((unsigned char *)GUIDString, &guid);
   break;
  }
  
  hDevInfo = SetupDiGetClassDevs(&guid,
            NULL,
            NULL,
            DIGCF_PRESENT);

if (INVALID_HANDLE_VALUE == hDevInfo)
  {
   FormatMSG(GetLastError(), &lpszMsg);
   throw lpszMsg;
  }
  
  DWORD i;
  SP_DEVINFO_DATA DeviceInfoData;
  ZeroMemory(&DeviceInfoData, sizeof(SP_DEVINFO_DATA));
  DeviceInfoData.cbSize = sizeof(SP_DEVINFO_DATA);
  
  for (i = 0; SetupDiEnumDeviceInfo(hDevInfo, i, &DeviceInfoData); ++i)
  {
   if (1 == nStatus)
   {
    ChangeStatus(DICS_ENABLE, i, hDevInfo);
   }
   else if (0 == nStatus)
   {
    ChangeStatus(DICS_DISABLE, i, hDevInfo);
   }  
  }
  
  // 释放 device information set
  return SetupDiDestroyDeviceInfoList(hDevInfo);
 }
 catch (TCHAR * pszError)
 {
  ::MessageBox(NULL,
            pszError,
   _T("提示"),
   MB_OK);
  if (NULL != lpszMsg)
  {
   LocalFree((HLOCAL)lpszMsg);
  }
  return FALSE;
 }
 return FALSE;
}

///

void CForbidCDDlg::OnButton1()
{

// 禁用光驱
 ControlDisk(0, 1); 
}

void CForbidCDDlg::OnButton2()
{

// 启用光驱
 ControlDisk(1, 1); 
}

/

ps: 在编译前，先确认是否安装了DDK且其 inc 和 lib 目录已经被包含到VC设置中。