QT 自动获取可用串口

本来想直接用Settings来获取的，但是串口信息类似 "\Device\Serial0"，死活获取不了，用了转义、反斜杠还是获取不到，所以就放弃了，网上好像也没有获取成功的。所以就用winapi来获取了，参考了网上源码cpp文件/*    初始化串口*/void MainWindow::init_comm(){    QString path = "HKEY_LOCAL_MACHINE\\HARDWARE\\DEVICEMAP\\SERIALCOMM";    QSettings *settings = new QSettings(path, QSettings::NativeFormat);    QStringList key = settings->allKeys();    QStringList comlist ;    QStringList Baudlist ;//    QStringList Paritylist ;//    QStringList DataBitslist;//    QStringList StopBitslist;//    QStringList ControlFlowlist;    comlist.clear();    /* 取串口名 */    for (int i=0; i<key.size(); i++) {        comlist << getcomm(i, "value");    }    ui->ComPortcomboBox->addItems(comlist);    ....}/*    读取键值*/QString MainWindow::getcomm(int index, QString keyorvalue){    QString commresult;    if (::RegOpenKeyEx(HKEY_LOCAL_MACHINE, TEXT("HARDWARE\\DEVICEMAP\\SERIALCOMM"), 0, KEY_READ, &hKey) != 0) {            QString error="Cannot open regedit!";//无法打开注册表时返回error            return error;        }//if(::RegOpenKeyEx(HKEY_LOCAL_MACHINE,subkey,0,KEY_READ,&hKey)!=0)        QString keymessage;//键名        QString message;        QString valuemessage;//键值        indexnum = index;//要读取键值的索引号        keysize = sizeof(keyname);        valuesize = sizeof(keyvalue);        if (RegEnumValue(hKey, indexnum, keyname, &keysize, 0, &type, (BYTE*)keyvalue, &valuesize) == 0) { //列举键名和值            for (int i=0; i<(int)keysize; i++) {                message = keyname[i];                keymessage.append(message);            }            for (int j=0; j<(int)valuesize; j++) {                 if (keyvalue[j] != 0x00) {                     valuemessage.append(keyvalue[j]);                 }            }            if (keyorvalue == "key") {                 commresult = keymessage;            }            if (keyorvalue == "value") {                 commresult=valuemessage;            }        } else {             commresult = "nokey";        }        RegCloseKey(hKey);//关闭注册表        return commresult;}

.h文件#include <QSettings>#include <qt_windows.h>      HKEY hKey;    LPCWSTR subkey;    wchar_t keyname[256]; //键名数组    char keyvalue[256];  //键值数组    DWORD keysize,type,valuesize;    int indexnum;