Find and replace a string in file using QFile class in QT

[mania]

Hi all,

I am able to read data from the file and stored it in QString , now i want to find and replace a string in that file.
Can one help me and give a solution.



Thanks in advance.

[ChrisW67]

There is no magic bullet function to "find and replace a string in that file". QString::replace() seems obvious enough though.

There is a small thing in every copy of Qt called Assistant. Assistant contains overview, reference documentation and examples you might find informative.

[scarecr0w132]

There is no magic bullet function to "find and replace a string in that file". QString::replace() seems obvious enough though.

There is a small thing in every copy of Qt called Assistant. Assistant contains overview, reference documentation and examples you might find informative.

Yes, we are spoiled with QT documentation

[mania]

Hi all,

I have append my scratch code below:

QFile file("/root/vodo");
if (!file.open(QIODevice::ReadWrite| QIODevice::Text))
return;

QTextStream in(&file);
QString line = in.readAll();
qDebug()<<"Text file Data..>>"<<line;
file.close();

Output of the above code:

Information datum
File exist

I want to replace " datum " to "data"

Kindly any one help me.

Thanks in advance.

[ChrisW67]

You already have the answer. Try to help yourself.

[mania]

Hi all,

Thanks for your support and encourage me , i have solved the issue of replacing string in file .Tanks to all

Now i want to create qrcode of converting string to qrcode and convert image to qrcode

Can any one help me

Thanks in advance.

[ChrisW67]

Can any one help me

Yes, start by not double posting.. then you only have to look in one place for an answer..

[mania]

Hi,

I have posted in separately for QRcode related , but i'm not get the solution that's why i have double posting .


Thanks in advance.

[anda_skoa]

I have posted in separately for QRcode related , but i'm not get the solution that's why i have double posting .

Double posting does nothing to help in that case.
Actually it is the opposite of helpful because double postings are extremely annoying.They require people to read the same things multiple times, taking away their time to read a really new question. So the effect is that they henceforth ignore all postings of known double posters.

That is if they are lucky. If the annoyed person is a moderator or admin the double poster will likely get warned, on repetition of the offence bannded.

In other words: double posting hurts your cause.

Cheers,
_