Qt：如何创建一个文件（其路径所需的directorys）？

Question

Qt：如何通过路径创建一个需要导航器的文件？说创建“./gg/ggg./fff/ff/file.dd”如果它不存在？

Answer 1

您可以设置路径

QDir directory("gg/ggg./fff/ff/file"); 

那么你可以创建一个像

QDir().mkdir("MyFolder"); 


bool QDir::mkdir (const QString & dirName) const 
Creates a sub-directory called dirName. 

Returns true on success; otherwise returns false. 

See also rmdir(). 

文件夹指http://doc.qt.io/qt-5/qdir.html#mkdir

bool QDir::mkpath (const QString & dirPath) const 
Creates the directory path dirPath. 

The function will create all parent directories necessary to create the directory. 

Returns true if successful; otherwise returns false. 

参考http://doc.qt.io/qt-5/qdir.html#mkpath

bool QFile::open (OpenMode mode) [virtual] 
Reimplemented from QIODevice::open(). 

Opens the file using OpenMode mode, returning true if successful; otherwise false. 
In WriteOnly or ReadWrite mode, if the relevant file does not already exist, this function will try to create a new file before opening it. 

参考http://doc.qt.io/qt-5/qfile.html#open