1. // 将字符串转16进制
    2. char Dx1000_dialogSP::ConvertHexChar(char ch)
    3. {
    4.     if((ch >= '0') && (ch <= '9'))
    5.         return ch-0x30;
    6.     else if((ch >= 'A') && (ch <= 'F'))
    7.         return ch-'A'+10;
    8.     else if((ch >= 'a') && (ch <= 'f'))
    9.         return ch-'a'+10;
    10.     else return (-1);
    11. }
    13. QByteArray QString2Hex(QString str)
    14. {
    15.     QByteArray senddata;
    16.     int hexdata,lowhexdata;
    17.     int hexdatalen = 0;
    18.     int len = str.length();
    19.     senddata.resize(len/2);
    20.     char lstr,hstr;
    21.     for(int i=0; i<len; )
    22.     {
    23.         hstr=str[i].toLatin1();
    24.         if(hstr == ' ')
    25.         {
    26.             i++;
    27.             continue;
    28.         }
    29.         i++;
    30.         if(i >= len)
    31.             break;
    32.         lstr = str[i].toLatin1();
    33.         hexdata = ConvertHexChar(hstr);
    34.         lowhexdata = ConvertHexChar(lstr);
    35.         if((hexdata == 16) || (lowhexdata == 16))
    36.             break;
    37.         else
    38.             hexdata = hexdata*16+lowhexdata;
    39.         i++;
    40.         senddata[hexdatalen] = (char)hexdata;
    41.         hexdatalen++;
    42.     }
    43.     senddata.resize(hexdatalen);
    44.     return senddata;
    45. }
    47. // 用法
    48. QString2Hex("00 01 05 15"); // 返回的是QByteArray类型00010515