qfile :: exists
bool QFile::exists() const. 判断当前文件是否存在。 bool QFile::link(const QString & linkName). 为当前文件创建一个新的快捷方式linkName ，创建成功返回true， ... ,sample.txt"); QFile file(fileName); if(QFileInfo::exists(fileName)) qDebug () << "file exists" << endl; file.open(QIODevice::ReadWrite ... ,QFile file("in.txt"); if (!file.open(QIODevice::ReadOnly | QIODevice::Text)) return; while (!file.atEnd()) ..... [static] bool QFile::exists(const QString & fileName). ,You can check for a file's existence using exists(), and remove a file using remove(). (More .... [static] bool QFile::exists(const QString &fileName). Returns true if ... ,QFile file("in.txt"); if (!file.open(QIODevice::ReadOnly | QIODevice::Text)) return; while (!file.atEnd()) .... [static] bool QFile::exists(const QString &fileName). Returns ... ,You can check for a file's existence using exists(), and remove a file using remove(). (More .... [static] bool QFile::exists(const QString &fileName). Returns true if ... ,QFile file("in.txt"); if (!file.open(QIODevice::ReadOnly | QIODevice::Text)) return; while (!file.atEnd()) .... [static] bool QFile::exists(const QString &fileName). Returns ... ,You can check for a file's existence using exists(), and remove a file using remove(). (More .... [static] bool QFile::exists(const QString &fileName). Returns true if ... , 你可以通过exists()来检查一个文件是否存在并且可以通过remove()来移去一个文件。 ... QFile file("out.txt"); if (!file.open(QIODevice::WriteOnly ...
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 qfile :: exists 相關參考資料
7.2 基本文件读写QFile - Qt编程指南 - LUG@USTC
bool QFile::exists() const. 判断当前文件是否存在。 bool QFile::link(const QString & linkName). 为当前文件创建一个新的快捷方式linkName ，创建成功返回true， ... https://qtguide.ustclug.org Check if file exists Qt | Qt Forum
sample.txt"); QFile file(fileName); if(QFileInfo::exists(fileName)) qDebug () << "file exists" << endl; file.open(QIODevice::ReadWrite ... https://forum.qt.io QFile Class | Qt 4.8 - Qt Documentation
QFile file("in.txt"); if (!file.open(QIODevice::ReadOnly | QIODevice::Text)) return; while (!file.atEnd()) ..... [static] bool QFile::exists(const QString & fileName). https://doc.qt.io QFile Class | Qt Core 5.12.2 - Qt Documentation Snapshots
You can check for a file's existence using exists(), and remove a file using remove(). (More .... [static] bool QFile::exists(const QString &fileName). Returns true if ... https://doc-snapshots.qt.io QFile Class | Qt Core 5.12.3 - Qt Documentation
QFile file("in.txt"); if (!file.open(QIODevice::ReadOnly | QIODevice::Text)) return; while (!file.atEnd()) .... [static] bool QFile::exists(const QString &fileName). Returns ... https://doc.qt.io QFile Class | Qt Core 5.14.0 - Qt Documentation Snapshots
You can check for a file's existence using exists(), and remove a file using remove(). (More .... [static] bool QFile::exists(const QString &fileName). Returns true if ... https://doc-snapshots.qt.io QFile Class | Qt Core 5.6 - Qt Documentation
QFile file("in.txt"); if (!file.open(QIODevice::ReadOnly | QIODevice::Text)) return; while (!file.atEnd()) .... [static] bool QFile::exists(const QString &fileName). Returns ... https://doc.qt.io QFile Class | Qt Core 5.9 - Qt Documentation
You can check for a file's existence using exists(), and remove a file using remove(). (More .... [static] bool QFile::exists(const QString &fileName). Returns true if ... https://doc.qt.io 【转】Qt之文件操作QFile - 柳北风儿 - ITeye
你可以通过exists()来检查一个文件是否存在并且可以通过remove()来移去一个文件。 ... QFile file("out.txt"); if (!file.open(QIODevice::WriteOnly ... https://qimo601.iteye.com |