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fix: QString cannot directly print non-English (e.g. Chinese) #852

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fix: QString cannot directly print non-English (e.g. Chinese) #852

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10 changes: 5 additions & 5 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -1117,11 +1117,11 @@ Easylogging++ has complete logging support for Qt core library. When enabled, th

Following Qt classes and containers are supported by Easylogging++ v9.0+

| * | * | * | * | * | * |
|---------------|---------------------------|--------------------|--------------------|--------------------|--------------------|
| `QString` | `QByteArray` | `QLatin` | `QList` | `QVector` | `QQueue` |
| `QSet` | `QPair` | `QMap` | `QMultiMap` | `QHash` | `QMultiHash` |
| `QLinkedList` | `QStack` | `QChar` | `q[u]int[64]` | | |
| * | * | * | * | * | * |
| ------------- | ------------ | -------- | ------------- | --------- | ------------ |
| `QString` | `QByteArray` | `QLatin` | `QList` | `QVector` | `QQueue` |
| `QSet` | `QPair` | `QMap` | `QMultiMap` | `QHash` | `QMultiHash` |
| `QLinkedList` | `QStack` | `QChar` | `q[u]int[64]` | `QRect` | |

Similar to STL logging, Qt containers are also limit to log 100 entries per log, you can change this behaviour by changing base::consts::kMaxLogPerContainer from header but this is not recommended as this was done for performance purposes.

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17 changes: 16 additions & 1 deletion src/easylogging++.h
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Expand Up @@ -430,6 +430,7 @@ ELPP_INTERNAL_DEBUGGING_OUT_INFO << ELPP_INTERNAL_DEBUGGING_MSG(internalInfoStre
#if defined(ELPP_QT_LOGGING)
// For logging Qt based classes & templates
# include <QString>
# include <QRect>
# include <QByteArray>
# include <QVector>
# include <QList>
Expand Down Expand Up @@ -2987,10 +2988,24 @@ return writeIterator(template_inst.begin(), template_inst.end(), template_inst.s
# if defined(ELPP_UNICODE)
m_logger->stream() << msg.toStdWString();
# else
m_logger->stream() << msg.toStdString();
m_logger->stream() << msg.toLocal8Bit().toStdString();
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By converting to native encoding (ANSI), non-English strings can be displayed normally.

# endif // defined(ELPP_UNICODE)
return *this;
}
inline MessageBuilder& operator<<(const QRect& rect) {
const int& left = rect.left();
const int& top = rect.top();
const int& width = rect.width();
const int& height = rect.height();
# if defined(ELPP_UNICODE)
#define int2wstr(name) QString::number(name).toStdWString()
m_logger->stream() << L"QRect(" << int2wstr(left) << L"," << int2wstr(top) << L" " << int2wstr(width) << L"x" << int2wstr(height) << L")";
# else
#define int2str(name) QString::number(name).toLocal8Bit().toStdString()
m_logger->stream() << "QRect(" << int2str(left) << "," << int2str(top) << " " << int2str(width) << "x" << int2str(height) << ")";
# endif
return *this;
}
inline MessageBuilder& operator<<(const QByteArray& msg) {
return operator << (QString(msg));
}
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