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Conversion between std::string, const char*, QString

2022-08-06 16:26:00 【falling star】

字符串转换

std::string 转 const char*

std::string str = "string";
const char *cstr = str.c_str();

const char* 转 std::string

const char* cstr="cstring";
std::string str = cstr;

QString 转 std::string

QString q_str = “qstring”;
std::string str = q_str.toStdString();

std::string 转 QString:

std::string str = “string”;
QString q_str = QString::fromStdString(str);

QString 转 const char*

// 方法1
QString q_str = “qstring”;
std::string str = q_str.toStdString();
const char* cstr = str.c_str();
// 方法2
QString q_str = "qstring";
QByteArray ba = q_str.toLocal8Bit();
const char *cstr = ba.data();

const char* 转 QString

const char* cstr="cstring";
QString myString = QString::fromUtf8(tcstr);

参考网站：
https://stackoverflow.com/questions/20824781/convert-const-char-to-qstring
https://blog.csdn.net/mnonm_mnonm_mnonm/article/details/8479336
https://stackoverflow.com/questions/24127946/converting-a-const-char-to-stdstring

原网站

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本文为[falling star]所创，转载请带上原文链接，感谢
https://yzsam.com/2022/218/202208061610458539.html

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