Open the file in QIODevice::Append
mode:
QFile f(...);
if (f.open(QIODevice::WriteOnly | QIODevice::Append)) {
...
}
See also the documentation.
题
How can I open a QFile for appending, i.e. the equivalent of
FILE *f = fopen("myfile.txt", "a");
解决方案
Open the file in QIODevice::Append
mode:
QFile f(...);
if (f.open(QIODevice::WriteOnly | QIODevice::Append)) {
...
}
See also the documentation.