C++Builder实现获取USB优盘序列号的方法

导读&＃xff1a;
　　//---------------------------------------------------------------------------<br>#include<setupapi.h><br>#include<stdio.h><br>#include<objbase.h><br>#ifndef__BORLANDC__<br>#pragmacomment(lib,"setupapi.lib")<br>#endif<br>//---------------------------------------------------------------------------<br>charg_strCrnVerify[]&＃61;<br>{<br>0xBB,0xB6,0xD3,0xAD,0xB9,0xE2,0xC1,0xD9,0x20,0x43,<br>0x2B,0x2B,0x42,0x75,0x69,0x6C,0x64,0x65,0x72,0xD1,<br>0xD0,0xBE,0xBF,0x20,0x2D,0x20,0x68,0x74,0x74,0x70,<br>0x3A,0x2F,0x2F,0x77,0x77,0x77,0x2E,0x63,0x63,0x72,<br>0x75,0x6E,0x2E,0x63,0x6F,0x6D<br>};<br>//---------------------------------------------------------------------------<br>voidCrnReplaceString(LPSTRlpBuf,charc1,charc2)<br>{<br>intnLen&＃61;strlen(lpBuf);<br>LPSTRlpTemp&＃61;newchar[nLen];<br>memset(lpTemp,0,nLen);<br>intj&＃61;0;<br>for(inti&＃61;0;i<nLen;i&＃43;&＃43;)<br>{<br>if(lpBuf[i]&＃61;&＃61;c1)<br>{<br>if(c2!&＃61;0x00)<br>{<br>lpTemp[j]&＃61;c2;<br>j&＃43;&＃43;;<br>}<br>}<br>else<br>{<br>lpTemp[j]&＃61;lpBuf[i];<br>j&＃43;&＃43;;<br>}<br>}<br>//<br>memset(lpBuf,0,nLen);<br>strncpy(lpBuf,lpTemp,nLen);<br>delete[]lpTemp;<br>}<br>//---------------------------------------------------------------------------<br>//获取指定盘符的序列号(针对USB优盘有效)<br>//charcDiskID:指定盘符&＃xff0c;如&＃39;L&＃39;<br>//LPSTRlpPID:序列号存放的缓冲&＃xff0c;如charszPID[32]<br>//byccrun(老妖)info&＃64;ccrun.com<br>//---------------------------------------------------------------------------<br>boolCrnGetUSBDiskID(charcDiskID,LPSTRlpPID)<br>{<br>charszDrv[4];<br>sprintf(szDrv,"%c:/",cDiskID);<br>if(GetDriveType(szDrv)!&＃61;DRIVE_REMOVABLE)<br>{<br>MessageBox(0,"指定的盘不是有效的优盘.",<br>"错误",MB_OK|MB_ICONWARNING);<br>returnfalse;<br>}<br>charlpRegPath[512]&＃61;{0};<br>charlpRegValue[256]&＃61;{0};<br>sprintf(lpRegPath,"SYSTEM/MountedDevices");<br>sprintf(lpRegValue,"/DosDevices/%c:",cDiskID);<br>//<br>DWORDdwDataSize(0);<br>DWORDdwRegType(REG_BINARY);<br>LPBYTElpRegBinData(NULL);<br>LPSTRlpUSBKeyData(NULL);<br>//查询注册表中映射驱动器的设备信息<br>HKEYhKey;<br>longlRet&＃61;::RegOpenKeyEx(<br>HKEY_LOCAL_MACHINE,//rootkey<br>lpRegPath,//要访问的键的位置<br>0,　　　　//<br>KEY_READ,　//以查询的方式访问注册表<br>&hKey);　　//hKEY保存此函数所打开的键的句柄<br>if(lRet!&＃61;ERROR_SUCCESS)<br>returnfalse;<br>else<br>{<br>lRet&＃61;::RegQueryValueEx(hKey,//所打开的键的句柄<br>lpRegValue,　　//要查询的键值名<br>NULL,<br>&dwRegType,　　//查询数据的类型<br>lpRegBinData,　//保存所查询的数据<br>&dwDataSize);　//预设置的数据长度<br>if(lRet!&＃61;ERROR_SUCCESS)<br>{<br>::RegCloseKey(hKey);<br>returnfalse;<br>}<br>else<br>{<br>lpRegBinData&＃61;newBYTE[dwDataSize];<br>lpUSBKeyData&＃61;newchar[dwDataSize];<br>memset(lpUSBKeyData,0,dwDataSize);<br>lRet&＃61;::RegQueryValueEx(hKey,<br>lpRegValue,<br>NULL,<br>&dwRegType,<br>lpRegBinData,<br>&dwDataSize);<br>if(lRet!&＃61;ERROR_SUCCESS)<br>{<br>// 本文转自 C&＃43;&＃43;Builder 研究 - http://www.ccrun.com/article.asp?i&＃61;1021&d&＃61;fgp83l<br>delete[]lpRegBinData;<br>delete[]lpUSBKeyData;<br>::RegCloseKey(hKey);<br>returnfalse;<br>}<br>}<br>}<br>::RegCloseKey(hKey);<br>//过滤二进制串中的无用信息(将0x0字符去除)<br>intj&＃61;0;<br>for(DWORDi&＃61;0;i<dwDataSize;i&＃43;&＃43;)<br>{<br>if(lpRegBinData[i]!&＃61;0x0)<br>{<br>lpUSBKeyData[j]&＃61;lpRegBinData[i];<br>j&＃43;&＃43;;<br>}<br>}<br>delete[]lpRegBinData;<br>//I&＃39;msorry:YoucanremoveunderlineinyourCode.<br>MessageBox(0,g_strCrnVerify,"CrnGetUSBDiskID",0);<br>//I&＃39;msorry:Onlyfor[ZhuanTieBuLiuMing].--#<br>// 截取lpUSBKeyData中的有用信息,例:7&100a16f&0<br>// ??STORAGE#RemovableMedia#7&100a16f&0&RM#{53f5630d-b6bf-11d0-94f2-00a0c91efb8b}<br>// 63 63 72 75 6E 2E 63 6F 6D<br>LPSTRlpPos1&＃61;strstr(lpUSBKeyData,"#RemovableMedia#")&＃43;16;<br>LPSTRlpPos2&＃61;strstr(lpUSBKeyData,"RM");<br>strncpy(lpUSBKeyData,lpPos1,int(lpPos2)-int(lpPos1));<br>lpUSBKeyData[int(lpPos2)-int(lpPos1)-1]&＃61;0x0;<br>strcpy(lpUSBKeyData,strupr(lpUSBKeyData));<br>//DiskDevice(磁盘设备)的GUID<br>GUIDguidUSB;<br>CLSIDFromString(L"{53f56307-b6bf-11d0-94f2-00a0c91efb8b}",&guidUSB);<br>//<br>HDEVINFOhUSB&＃61;SetupDiGetClassDevs(<br>&guidUSB,NULL,0,DIGCF_PRESENT|DIGCF_DEVICEINTERFACE);<br>if(hUSB&＃61;&＃61;INVALID_HANDLE_VALUE)<br>{<br>delete[]lpUSBKeyData;<br>returnfalse;<br>}<br>//<br>intnDevIndex&＃61;0;<br>boolbSuccess;<br>SP_DEVINFO_DATADevData;<br>SP_DEVICE_INTERFACE_DATADevIntData;<br>PSP_DEVICE_INTERFACE_DETAIL_DATAlpDevIntDetailData;<br>DWORDdwBytesReturned;<br>//遍历磁盘设备<br>do<br>{<br>DevIntData.cbSize&＃61;sizeof(SP_DEVICE_INTERFACE_DATA);<br>bSuccess&＃61;SetupDiEnumDeviceInterfaces(hUSB,NULL,&guidUSB,<br>nDevIndex,&DevIntData)>0;<br>if(bSuccess)<br>{<br>//获取接口详细信息<br>DevData.cbSize&＃61;sizeof(SP_DEVINFO_DATA);<br>dwBytesReturned&＃61;0;<br>SetupDiGetDeviceInterfaceDetailA(hUSB,&DevIntData,<br>NULL,0,&dwBytesReturned,&DevData);<br>if(dwBytesReturned!&＃61;0&&GetLastError()&＃61;&＃61;ERROR_INSUFFICIENT_BUFFER)<br>{<br>lpDevIntDetailData&＃61;(PSP_DEVICE_INTERFACE_DETAIL_DATA)<br>GlobalAlloc(GMEM_FIXED,dwBytesReturned);<br>lpDevIntDetailData->cbSize&＃61;<br>sizeof(SP_DEVICE_INTERFACE_DETAIL_DATA);<br>if(SetupDiGetDeviceInterfaceDetailA(hUSB,&DevIntData,<br>lpDevIntDetailData,dwBytesReturned,&dwBytesReturned,&DevData))<br>{<br>//取得设备接口详细信息并根据转化后的路径在注册表中查询<br>LPSTRlpPathTemp&＃61;newchar[strlen(lpDevIntDetailData->DevicePath)&＃43;256];<br>strcpy(lpRegPath,"SYSTEM/CurrentControlSet/Enum/");<br>strcpy(lpPathTemp,lpDevIntDetailData->DevicePath);<br>lpPos1&＃61;LPSTR(int(lpPathTemp)&＃43;4);<br>lpPos2&＃61;LPSTR(int(strstr(lpPathTemp,"{"))-1);<br>strncpy(lpPathTemp,lpPos1,int(lpPos2)-int(lpPos1));<br>lpPathTemp[int(lpPos2)-int(lpPos1)]&＃61;0x0;<br>CrnReplaceString(lpPathTemp,&＃39;#&＃39;,&＃39;/&＃39;);<br>strcat(lpRegPath,lpPathTemp);<br>//<br>if(RegOpenKeyEx(<br>HKEY_LOCAL_MACHINE,<br>lpRegPath,<br>0,<br>KEY_READ,<br>&hKey)&＃61;&＃61;ERROR_SUCCESS)<br>{<br>dwRegType&＃61;REG_SZ;<br>LPSTRlpRegSzData&＃61;NULL;<br>dwDataSize&＃61;0;<br>lRet&＃61;::RegQueryValueEx(hKey,<br>"ParentIdPrefix",<br>NULL,<br>&dwRegType,<br>(LPBYTE)lpRegSzData,<br>&dwDataSize);<br>if(lRet&＃61;&＃61;ERROR_SUCCESS)<br>{<br>lpRegSzData&＃61;newchar[dwDataSize];<br>lRet&＃61;::RegQueryValueEx(hKey,<br>"ParentIdPrefix",<br>NULL,<br>&dwRegType,<br>(LPBYTE)lpRegSzData,<br>&dwDataSize);<br>if(lRet&＃61;&＃61;ERROR_SUCCESS)<br>{<br>strcpy(lpRegSzData,strupr(lpRegSzData));<br>if(!strcmp(lpUSBKeyData,lpRegSzData))<br>{<br>//经比对&＃xff0c;找到要查询的磁盘设备<br>strcpy(lpPathTemp,LPSTR(int(strstr(<br>lpDevIntDetailData->DevicePath,"#"))&＃43;1));<br>lpPos1&＃61;LPSTR(int(strstr(lpPathTemp,"#"))&＃43;1);<br>lpPos2&＃61;LPSTR(int(strstr(lpPathTemp,"#{")));<br>strncpy(lpPathTemp,lpPos1,int(lpPos2)-int(lpPos1));<br>lpPathTemp[int(lpPos2)-int(lpPos1)]&＃61;0x0;<br>//获取最终的磁盘序列号<br>CrnReplaceString(lpPathTemp,&＃39;&&＃39;,0x00);<br>if(lpPID)<br>strncpy(lpPID,strupr(lpPathTemp),32);<br>//<br>delete[]lpRegSzData;<br>delete[]lpPathTemp;<br>GlobalFree(lpDevIntDetailData);<br>::RegCloseKey(hKey);<br>break;<br>}<br>}<br>delete[]lpRegSzData;<br>}<br>::RegCloseKey(hKey);<br>}<br>delete[]lpPathTemp;<br>nDevIndex&＃43;&＃43;;<br>}<br>GlobalFree(lpDevIntDetailData);<br>}<br>}<br>}while(bSuccess);<br>SetupDiDestroyDeviceInfoList(hUSB);<br>delete[]lpUSBKeyData;<br>returntrue;<br>}<br>//---------------------------------------------------------------------------<br>void__fastcallTForm1::Button1Click(TObject*Sender)<br>{<br>charlpPID[32];<br>if(CrnGetUSBDiskID(&＃39;L&＃39;,lpPID))<br>ShowMessage(lpPID);<br>}

本文转自
http://tech.ddvip.com/2007-06/118181184827363.html