calcSlot(); //新建文件 void createNewFile(); //打开文件 void openFileSlot()...
saveFile()函数代码如下: bool MainWindow::saveFile(QString fileName){ QFile file(fileName); if(!file.open(QFile::WriteOnly | QFile::Text)){ QMessageBox::critical(this, "critical", "cannot write file" ); return false; }else{ QTextStream out(&file); out<<textEdit->toPlainText();...
QString path = QFileDialog::getSaveFileName(this, tr("Open File"), ".", tr("Text Files(*.txt)")); if(!path.isEmpty()) { QFile file(path); if (!file.open(QIODevice::WriteOnly | QIODevice::Text)) { QMessageBox::warning(this, tr("Write File"), tr("Cannot open file:\n...
打开qsqldriverbase.pri文件,注释掉include($$shadowed($$PWD)/qtsqldrivers-config.pri),然后添加一行include(./configure.pri); 然后点击构建就可以了,如果点击构建是报Cannot write file /mkspecs/modules-inst/qt_plugin_qsqlmysql.pri:Cannot create parent qt_plugin.prf错误,不用慌,这是安装qt时权限没给够...
void newFile(); void open(); void save(); void saveAs(); void openRecentFile(); void about(); private: void createActions(); void createMenus(); void loadFile(const QString &fileName); void saveFile(const QString &fileName); ...
求救!!!canno..在另一台mac上安了Qt。编译程序报错cannot write cache file /.qmake.stash:cannot create parent directory。从来没见过。有没有大神解
Qt工程报错:-1: error: Cannot run compiler ‘clang++‘. Output:mingw32-make.exe 系列文章目录 文章目录 系列文章目录 前言 一、报错原因 二、解决办法 1.首先我们在安装Qt的时候,记得勾选msvc,MinGW这些编译器,由于我是在windows下开发...
(1)使用QFile类 使用QFile同样可以对文件进行写操作: QString path = QFileDialog::getSaveFileName(this, "保存" , "D:\\temp\\", "TXT(*.txt)"); QFile file(path); file.open(QIODevice::WriteOnly | QIODevice::Text); file.write("你好"); ...
QFile file(dir.filePath("test.txt"));// ".../tmp/test.txt"if(!file.open(QIODevice::ReadWrite)) qWarning("Cannot create the file %s", file.fileName()); }// 获取目录下文件的信息并按文件由小到大进行排列QDir dirLocal; dirLocal.setFilter(QDir::Files | QDir::Hidden | QDir::NoSym...
optfile=config.opt fi if ! test -f $optfile; then echo >&2 "No config.opt present - cannot redo configuration."exit 1 fi for a in `cat $optfile`; do OPT_CMDLINE="$OPT_CMDLINE $a" done ;; *) OPT_CMDLINE="$OPT_CMDLINE $i" ...