I want to get lines of text

[JimDaniel]

You are trying to append a std::string, but QTextEdit::append() takes a QString. As a fix you can say:

textEdit1->append(QString::fromStdString(v[i]));

textEdit1->append(QString::fromStdString(v[i]));

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But Qt has its own data structures and string class. I think you'll be happier in the long run if you learn to use those. They are easier anyway.

EDIT:

For example,

QStringList list;
while(!file.atEnd())
{
    QString line = file.readLine(200);
    list.push_back(line);
}
 
list.sort();
 
for(int i = 0; i < list.count(); i++)
{
    textEdit1->append(list.at(i));
}

QStringList list;
while(!file.atEnd())
{
    QString line = file.readLine(200);
    list.push_back(line);
}

list.sort();

for(int i = 0; i < list.count(); i++)
{
    textEdit1->append(list.at(i));
}

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[aamer4yu]

But Qt has its own data structures and string class. I think you'll be happier in the long run if you learn to use those. They are easier anyway.

True indeed ... Qt is Cute

[newplayer]

Thx you very much JimDaniel, I didn't know about 'QStringList' in Qt Thx !!


I have a little problem with ENTER's ( '\n' ) and function 'append()'. When I have for example:
a
b
c
d

After used 'append' I see in my textbox:
a

b

c

d

Why ? Is it any function in Qt which resolve this problem ?

[aamer4yu]

What code are u using to append ?? You are probably appending '\n' too.

[newplayer]

I am using:
textEdit1->append(list.at(i));

[aamer4yu]

You shouldnt probably be getting that..
From the docs -

QString QTextStream::readLine ( qint64 maxlen = 0 )
Reads one line of text from the stream, and returns it as a QString. The maximum allowed line length is set to maxlen. If the stream contains lines longer than this, then the lines will be split after maxlen characters and returned in parts.
If maxlen is 0, the lines can be of any length. A common value for maxlen is 75.
The returned line has no trailing end-of-line characters ("\n" or "\r\n"), so calling QString::trimmed() is unnecessary.

Hence \n must not be present in the string list.
Can you manually check the QString -> list.at(i) .... what does it contain ?

[newplayer]

Thx - trimmed() helped me