我想使用以下代码将两个文件保存到目录中:
第二个 file.open() 总是失败。如何正确地重用这个文件对象?
QString dir = QFileDialog::getExistingDirectory(this, tr("Open Directory"),QDesktopServices::storageLocation(QDesktopServices::DesktopLocation),
QFileDialog::ShowDirsOnly
| QFileDialog::DontResolveSymlinks);
QFile file(dir.append("/GlobalMessage.txt"));
if(file.open(QIODevice::WriteOnly | QIODevice::Text)){
QTextStream out(&file);
for (int i=0;i<t_global.size();i++){
out << t_global[i]<<" "<<y_lat.y[i]<<" "<<y_lng.y[i]<<" "<<y_alt.y[i]<<" "<<y_vx.y[i]<<" "<<y_vy.y[i]<<" "<<y_vz.y[i]<<"\n";
}
}
// optional, as QFile destructor will already do it:
file.close();
file.setFileName(dir.append("/AttitudeMessage.txt"));
if(file.open(QIODevice::WriteOnly | QIODevice::Text)){
QTextStream out(&file);
for (int i=0;i<t_attitude.size();i++){
out << t_attitude[i]<<" "<<y_roll.y[i]<<" "<<y_pitch.y[i]<<" "<<y_yaw.y[i]<<"\n";
}
}
file.close();
第二个 file.open() 总是失败。如何正确地重用这个文件对象?
QFile
实例。 - dtech