unsigned char *是一个指向无符号字符数组的指针,每个无符号字符的取值范围是0到255。在Qt中,这种类型通常用于处理原始字节数据,如从文件、网络或其他数据源读取的数据。 2. 理解QString数据类型在Qt中的用途和表示 QString是Qt中用于处理字符串的类,它提供了丰富的字符串操作功能,并且支持Unicode字符。QString可以...
QString str = "fdd"; QByteArray ba = str.toLatin1(); unsigned char * str1 = (unsigned char *)ba.data;
//unsiged char *转QString unsigned char *str = "fdd" ; char *str1 = (char *)str; QString str2 = QString(QLatin1String(str1)); //QString 转化成char * QString str = "fdd"; QByteArray ba = str.toLatin1(); unsigned char * str1 = (unsigned char *)ba.data;分类: Qt 好...
QString datastr = msg.mid(24,8);//QString转数字=> packetLen=str.toUInt(&ok,16);//QByteArray存放的就是二进制数据,注意下=> QByteArray info; int packetLen = (unsigned char)info.at(2);//左移(扩大)=> packetLen<<=8;//数字转其他进制并输出字符串=>//int n = 63;QByteArray::number...
QString -> unsigned char* : QString str = "ABCD"; int length = str.length(); unsigned char* sequence = NULL;sequence =(unsigned char*)qstrdup(str.toAscii().constData()); delete[] sequence; - sequence length = 5 --> ['A'] ['B'] ['C'] ['D'] ['/0'] - sequence is now...
1. QString 转换为 Hex ByteArray voidSimSerialPort::convertStringToHex(constQString&str,QByteArray&byteData){inthexdata,lowhexdata;inthexdatalen=0;intlen=str.length();byteData.resize(len/2);charlstr,hstr;for(inti=0;i<len;){//char lstr,hstr=str[i].toLatin1();if(hstr==' '){i...
类型转换 String——》Char OR Char ——》String 2019-12-21 11:09 −String转换为char 在Java中将String转换为char是非常简单的。1. 使用String.charAt(index)(返回值为char)可以得到String中某一指定位置的char。2. 使用String.toCharArray()(返回值为char[])可以得到将包含整个String... ...
Qt unsigned char *与QString之间的相互转换 //unsiged char *转QString unsigned char *str = "fdd" ; char *str1 = (char *)str; QString str2 = QString(QLatin1String(str1)); //QString 转化成char * QString str = "fdd"; QByteArray ba = str.toLatin1(); unsigned char * str1 =...