dfsdfgsdfsafsdgds
1、取消电脑使用中的com口的方法：
右键点我的电脑--管理--选设备管理器--右边展开端口列表，不想要的点右键，卸载。
2、com口通常用于连接鼠标（串口）及通讯设备（如连接外置式MODEM进行数据通讯或一些工厂的CNC机接口）等。
raymondkang
电脑如果COM口不够，可以使用USB转COM口线，将COM口转换成USB口。
COM口转USB线的使用方法：
1、首先准备一条USB转串口线，可以看到这种数据线一端是标准的USB口whatsapp网页版退出登录，可以连接笔记本的U口，一端是标准的9针串口公头，可以连接目标设备；
2、再来安装USB转串口数据线的驱动，驱动文件一般会在购买数据线时附送的光盘上面，也可以从网上下载；
3、双击setup驱动安装文件，将驱动安装到笔记本上；
4、将USB转串口数据线插到电脑的空闲USB数据口；
5、因为这种数据线增加的串口一般都不是默认的串口1，所以需要先查找一下新增串口的序号。打开【我的电脑】；
6、在【我的电脑】上点击右键，选择【设备】；
7、可以在【端口】的选项中看到新增的串口为【COM7】；
8、打开串口助手软件，在串口号的位置选择【COM7】；
9、点击【打开串口】，可以看到标志灯已经亮了，表示串口连接正常。这样就可以来通过这个新增的串口调试设备了。
trggf
xp系统才显示COM几；
msy871207
直接单击com应该有面就列出来了~具体判断是什么就要一个个查了~
bmw18686908883
void EnumSerialPorts(CArray<SSerInfo,SSerInfo&> &asi, BOOL bIgnoreBusyPorts){ asi.RemoveAll(); OSVERSIONINFO vi; vi.dwOSVersionInfoSize = sizeof(vi); if (!::GetVersionEx(&vi)) { CString str; str.Format(_T("Could not get OS version. (err=%lx)"), GetLastError()); throw str; } if (vi.dwMajorVersion < 5) { if (vi.dwPlatformId == VER_PLATFORM_WIN32_NT)EnumPortsWNt4(asi); elseEnumPortsW9x(asi); } else { EnumPortsWdm(asi); } for (int ii = 0; ii < asi.GetSize(); ii ++) { SSerInfo& rsi = asi[ii]; if (bIgnoreBusyPorts) {HANDLE hCom = Crwhatsapp官网eateFile(rsi.strDevPath, GENERIC_READ | GENERIC_WRITE,0, NULL, OPEN_EXISTING, 0, NULL);if (hCom == INVALID_HANDLE_VALUE){asi.RemoveAt(ii);ii --;continue;}else{::CloseHandle(hCom);} } if (rsi.strFriendlyName.IsEmpty())rsi.strFriendlyName = rsi.strPortName; if (rsi.strPortDesc.IsEmpty()) {rsi.strPortDesc = rsi.strFriendlyName;int startdex = rsi.strPortDesc.Find(_T(" ("));int enddex = rsi.strPortDesc.Find(_T(")"));if (startdex > 0 && enddex == (rsi.strPortDesc.GetLength() - 1))rsi.strPortDesc = rsi.strPortDesc.Left(startdex); } }}void EnumPortsWdm(CArray<SSerInfo,SSerInfo&> &asi){ CString strErr; GUID * guidDev = (GUID*) &GUID_CLASS_COMPORT; HDEVINFO hDevInfo = INVALID_HANDLE_VALUE; SP_DEVICE_INTERFACE_DETAIL_DATA * pDetData = NULL; try { hDevInfo = SetupDiGetClassDevs( guidDev, NULL, NULL,DIGCF_PRESENT | DIGCF_DEVICEINTERFACE); if (hDe安装whatsapp收不到验证码vInfo == INVALID_HANDLE_VALUE){strErr.Format(_T("SetupDiGetClassDevs failed. 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(err=%lx)"), err); throw strErr;}} } } catch (CString strCatchErr) { strErr = strCatchErr; } if (pDetData != NULL) delete [] (char*)pDetData; if (hDevInfo != INVALID_HANDLE_VALUEwhatsapp如何加好友) SetupDiDestroyDeviceInfoList(hDevInfo); if (!strErr.IsEmpty()) throw strErr;}void EnumPortsWNt4(CArray<SSerInfo,SSerInfo&> &asi){ SSerInfo si; for (int ii = 1; ii <= 16; ii ++) { CString strPort; strPort.Format(_T("COM%d"),ii); si.strDevPath = CString(_T("\\\\.\\")) + strPort; si.strPortName = strPort; asi.Add(si); }}void EnumPortsW9x(CArray<SSerInfo,SSerInfo&> &asi){ HKEY hkEnum = NULL; HKEY hkSubEnum = NULL; HKEY hkSubSubEnum = NULL; try { if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, _T("Enum"), 0, KEY_READ,&hkEnum) != ERROR_SUCCESS)throw CString(_T("Could not read from HKLM\\Enum"));whatsapp好友头像旁有个表盘 TCHAR acSubEnum[128]; DWORD dwSubEnumIndex = 0; DWORD dwSize = sizeof(acSubEnum); while (RegEnumKeyEx(hkEnum, dwSubEnumIndex++, acSubEnum, &dwSize,NULL, NULL, NULL, NULL) == ERROR_SUCCESS) {HKEY hkSubEnum = NULL;if (RegOpenKeyEx(hkEnum, acSubEnum, 0, KEY_READ,&hkSubEnum) != ERROR_SUCCESS)throw CString(_T("Could not read from HKLM\\Enum\\"))+acSubEnum;BOOL bUsbDevice = (wcscmp(acSubEnum,_T("USBPORTS"))==0);TCHAR acSubSubEnum[128];dwSiwhatsapp网页版登录要付费吗ze = sizeof(acSubSubEnum); // set the buffer sizeDWORD dwSubSubEnumIndex = 0;while (RegEnumKeyEx(hkSubEnum, dwSubSubEnumIndex++, acSubSubEnum,&dwSize, NULL, NULL, NULL, NULL) == ERROR_SUCCESS){BOOL bMatch = (wcscmp(acSubSubEnum,_T("*PNP05WhatsApp网页版 app 下载00"))==0 || wcscmp(acSubSubEnum,_T("*PNP0501"))==0 || bUsbDevice);if (bMatch){ HKEY hkSubSubEnum = NULL; if (RegOpewhatsapp连接中 解决方案nKeyEx(hkSubEnum, acSubSubEnum, 0, KEY_READ, &hkSubSubEnum) != ERROR_SUCCESS) thWhatsApp网页版看好友动态row CString(_T("Could not read from HKLM\\Enum\\")) +acSubEnum + _T("\\") + acSubSubEnum; SearchPnpKeyW9x(hkSubSubEnum, bUsbDevice, asi); RegCloseKey(hkSubSubEnum); hkSubSubEnum = NULL;}dwSize = sizeof(acSubSubEnum); // restore the buffer size}RegCloseKey(hkSubEnum);hkSubEnum = NULL;dwSiz电脑登录WhatsApp网页版e = sizeof(acSubEnum); // restore the buffer size } } catch (CString strError) { if (hkEnum != NULL)RegCloseKey(hkEnum); if (hkSubEnum != NULL)RegCloseKey(hkSubEnum); if (hkSubSubEnum != NULL)RegCloseKey(hkSubSubEnum); throw strError; } RegCloseKey(hkEnum);}void SearchPnpKeyW9x(HKEY hkPnp, BOOL bUsbDevice, CArray<SSerInfo,SSerInfo&> &asi){ HKEY hkSubPnp = NULL; try { TCHwhatsapp网页版如何双开AR acSubPnp[128]; DWORD dwSubPnpIndex = 0; DWORD dwSize = sizeof(acSubPnp); while (RegEnumKeyEx(hkPnp, dwSubPnpIndex++, acSubPnp, &dwSize,NULL, NULL, NULL, NULL) == ERROR_SUCCESS) {HKEY hkSubPnp = NULL;if (RegOpenKeyEx(hkPnp, acSubPnp, 0, KEY_READ,&hkSubPnp) != ERROR_SUCCESS)throw CString("Could not read from HKLM\\Enum\\...\\") + acSubPnp;char acValue[128];dwSize = sizeof(acValue);if (RegQueryValueEx(hkSubPnp, _T("PORTNAME"), NULL, NULL, (BYTE*)acValue,&dwSize) == ERROR_SUCCESS){CString strPortName(acValue);CString strFriendlyName;dwSize = sizeof(acValue);if (RegQueryValueEx(hkSubPnp, _T("FRIENDLYNAME"), whatsapp网页版的官方网站NULL, NULL, (BYTE*)acValue, &dwSize) == ERROR_SUCCESS) strFriendlyName = acValue;SSerInfo si;si.strDevPath = CString(_T("\\\\.\\")) + strPortName;si.strPortName = strPortName;si.strFriendlyName = strFriendlyName;si.bUsbDevice = bUsbDevice;BOOL bDup = FALSE;for (int ii = 0; ii < asi.GetSize() && !bDup; ii ++){ if (asiwhatsapp接受不到验证码[ii].strPortName == strPortName) { bDup = TRUE; asi[ii] = si; }}if (!bDup){ asi.Add(si);}}RegCloseKey(hkSubPnp);hkSubPnp = NULL;dwSize = sizeof(acSubPnp); } } catch (CString strError) { if (hkSubPnp != NULL)RegCloseKey(hkSubPnp); throw strError; }}很久以前的代码了，不知道现在还能不能用，给你参考了。
woainwhatsapp怎么加外国人好友i614
可以当显示器用，最好同时接hdmi高清接口（而且同时传输音频和视频）
qq515430269
控制面板/用户帐户，选择更改用户登陆或注销的方式，勾选使用欢迎屏幕，再应用确定
WhatsApp中文网页版 - WhatsApp官网请注明：WhatsApp中文网页版 - WhatsApp官网 » whatsapp多开软件 怎样取消电脑上面使用中的com口
