char ConvertHexChar(char ch)

{

if((ch >= "0") && (ch

return ch-0x30;

else if((ch >= "A") && (ch

return ch-"A"+10;

else if((ch >= "a") && (ch

return ch-"a"+10;

else return (-1);

}

QByteArray QString2Hex(QString str)

{

QByteArray senddata;

int hexdata,lowhexdata;

int hexdatalen = 0;

int len = str.length();

senddata.resize(len/2);

char lstr,hstr;

for(int i=0; i