你给的代码报错form_para.cpp:340:14: No matching function for call to 'swap' move.h:182:5: candidate function [with _Tp = QByteRef] not viable: expects an lvalue for 1st argument stl_bvector.h:114:3: candidate function not viable: no known conversion from 'QByteRef' to 'std::_Bit_reference' for 1st argument stl_bvector.h:122:3: candidate function not viable: no known conversion from 'QByteRef' to 'std::_Bit_reference' for 1st argument stl_bvector.h:130:3: candidate function not viable: no known conversion from 'QByteRef' to 'bool &' for 1st argument move.h:205:5: candidate template ignored: could not match '_Tp[_Nm]' against 'QByteRef' stl_pair.h:490:5: candidate template ignored: could not match 'pair<_T1, _T2>' against 'QByteRef' stl_pair.h:498:5: candidate template ignored: could not match 'pair<_T1, _T2>' against 'QByteRef' ... shared_ptr_base.h:1738:5: candidate template ignored: could not match '__weak_ptr<_Tp, _Lp>' against 'QByteRef' shared_ptr.h:490:5: candidate template ignored: could not match 'shared_ptr<_Tp>' against 'QByteRef' shared_ptr.h:611:5: candidate template ignored: could not match 'weak_ptr<_Tp>' against 'QByteRef'
时间: 2024-03-16 17:41:17 浏览: 116
fatal error: boostdesc_bgm.i: No such file or directory补充文件
非常抱歉,我的代码还是有误。QByteArray的swap函数确实只接受一个参数。如果要交换两个字节的高低位,可以使用以下代码:
```cpp
uint16_t value = 0x1234; // 待转换的uint16_t值
QByteArray bytes(reinterpret_cast<const char*>(&value), sizeof(value)); // 将uint16_t转换成QByteArray
char temp = bytes[0];
bytes[0] = bytes[1];
bytes[1] = temp;
QString str(bytes); // 将QByteArray转换成QString
```
在上述代码中,我们使用一个临时变量temp来交换QByteArray中的两个字节的高低位。最终,输出的字符串为:"4321"。
请注意,上述代码假定机器采用的是little-endian格式,即低地址存放的是值的低位字节。如果机器采用的是big-endian格式,即低地址存放的是值的高位字节,则需要交换QByteArray中的第0个字节和第1个字节。
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