staticQStringfromAscii_helper(constchar*str,intsize); 其中,str是指向输入ASCII字符串的指针,size是字符串的长度。 使用示例 由于fromAscii_helper是私有方法,一般情况下,开发者不需要直接调用它。相反,Qt提供了更简单的方式来创建QString对象,例如使用QString类的构造函数: Q
QString QString::fromAscii(const char *str, int size) { return QString(fromAscii_helper(str, size), 0); } fromAscii会调用下面这个函数: QString::Data *QString::fromAscii_helper(const char *str, int size) { #ifndef QT_NO_TEXTCODEC if (codecForCStrings) { Data *d; if (!str) {...
QString QString::fromAscii(const char *str, int size) { return QString(fromAscii_helper(str, size), 0); } fromAscii会调用下面这个函数: QString::Data *QString::fromAscii_helper(const char *str, int size) { #ifndef QT_NO_TEXTCODEC if (codecForCStrings) { Data *d; if (!str) {...
QString QString::fromAscii(const char *str, int size){ return QString(fromAscii_helper(str, size), 0);} fromAscii会调⽤下⾯这个函数:QString::Data *QString::fromAscii_helper(const char *str, int size){ #ifndef QT_NO_TEXTCODEC if (codecForCStrings) { Data *d;if (!str) { d...
1、Qt Creator源码中,默认是打开QT_NO_CAST_FROM_ASCII这个宏的,看文档,这个宏就是禁用一切来自双引号或者单引号的字符串字面量传入QString的函数。但是我们裸写字符串不是非常平常的一件事情么?这里是Qt Creator断了我们一条道路,解决的方法还是有的,我这里提供两个方法,欢迎提出新的方法: ...
QString fromAscii (str str, int size = -1) QString fromLatin1 (str str, int size = -1) QString fromLocal8Bit (str str, int size = -1) QString fromUtf8 (str str, int size = -1) int localeAwareCompare (QString s1, QString s2) int localeAwareCompare (QString s1, QStringRe...
UTF-8 is a superset of US-ASCII (ANSI X3.4-1986) that supports the entire Unicode character set through multibyte sequences. toLocal8Bit() returns an 8-bit string using the system's local encoding. To convert from one of these encodings, QString provides fromLatin1(), fromUtf8(), ...
()); void QtHelper::getCurrentInfo(char *argv[], QString &path, QString &name) { //必须用fromLocal8Bit保证中文路径正常 QString argv0 = QString::fromLocal8Bit(argv[0]); QFileInfo file(argv0); path = file.path(); name = file.baseName(); } QString QtHelper::getIniValue(const...
viable: no known conversion from 'int' to 'const QByteArray &' for 1st argument inline QT_ASCII_CAST_WARN QString(const QByteArray &a) ^ /Users/eric/Qt5.9.7/5.9.7/clang_64/lib/QtCore.framework/Headers/qstring.h:777:12: note: candidate constructor not viable: no known conversion from...
But many algorithms are much slower with UTF-8 than with plain ASCII or latin1 Hence you can use QLatin1String, which is just a thin wrapper around char * that specify the encoding. There are overloads taking QLatin1String for functions that can opperate or the raw latin1 data ...