Qt C++ Continuing a File and not Overwriting

Question

I'm writing a program in Qt C++ to create a sort of database. However, whenever I hit the push button it overwrites the entire file instead of continuing to a new line like I need it to do. I would really appreciate any info on how to fix this.

Relevant Code Portion:

QFile file("C:/Users/brandan/Desktop/GUIPrograms/Kumon.txt");
file.open(QIODevice::WriteOnly | QIODevice::Text);
QTextStream stream(&file); //stream of information
stream << " " << endl;
stream << name << " " << month << " " << day << " " << year << " " << page << endl;
file.close();

http://qt-project.org/doc/qt-4.8/qiodevice.html#OpenModeFlag-enum — cageman, Jan 25 '14 at 17:22
Possible duplicate of [Open QFile for appending](http://stackoverflow.com/questions/13856734/open-qfile-for-appending) — sashoalm, Jan 26 '17 at 09:54

score 4 · Accepted Answer · answered Jan 25 '14 at 17:21

4

You have to open the file in append mode:

file.open(QIODevice::Append | QIODevice::Text);

answered Jan 25 '14 at 17:21

David G

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score 3 · Answer 2 · edited May 23 '17 at 12:24

3

Did you try QIODevice::Append?

By the way, this has been asked a several times. A simple google search gives this: Open QFile for appending

edited May 23 '17 at 12:24

Community

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answered Jan 25 '14 at 17:20

Jeremy D

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Qt C++ Continuing a File and not Overwriting

2 Answers2