QT中tolocal8Bit->constData是什么意思,急求!!!
发布网友
发布时间:2022-07-13 07:20
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热心网友
时间:2023-10-26 10:20
你写的有问题吧。
toLocal8Bit,constData应该都是方法吧。
热心网友
时间:2023-10-26 10:21
你能把整个表达式写出来吗?这个tolocal8Bit是什么类型的?
热心网友
时间:2023-10-26 10:21
看下 Qt 助手不就一目了然了吗?
QByteArray QString::toLocal8Bit () const
Returns the local 8-bit representation of the string as a QByteArray. The returned byte array is undefined if the string contains characters not supported by the local 8-bit encoding.
QTextCodec::codecForLocale() is used to perform the conversion from Unicode. If the locale encoding could not be determined, this function does the same as toLatin1().
If this string contains any characters that cannot be encoded in the locale, the returned byte array is undefined. Those characters may be suppressed or replaced by another.
const char * QByteArray::constData () const
Returns a pointer to the data stored in the byte array. The pointer can be used to access the bytes that compose the array. The data is '\0'-terminated unless the QByteArray object was created from raw data. The pointer remains valid as long as the byte array isn't reallocated or destroyed.
This function is mostly useful to pass a byte array to a function that accepts a const char *.
Note: A QByteArray can store any byte values including '\0's, but most functions that take char * arguments assume that the data ends at the first '\0' they encounter.
QT中tolocal8Bit->constData是什么意思,急求!!!
toLocal8Bit,constData应该都是方法吧。
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