HTML String Question

wally123

Hello,

i have 2 variants of a HTML String:

        QString tmpStr_tx = QString("<font color = \"red\"> %1 %2</font>").arg("ECW<< ").arg(ba2OutString(currMessage_tx));
        ui->lvWidget->appendHtml(tmpStr_tx);

        QString tmpStr_tx = QString("<font color = \"red\"> %1 %2</font>").arg("<<ECW ").arg(ba2OutString(currMessage_tx));
        ui->lvWidget->appendHtml(tmpStr_tx);

In lvWidget (QPlainTextEdit) only the part until occurence of "<<" is displayed.
1st: ECW and nothing else
2nd empty line with linefeed

Problem seem sto be the 2 '<' in arg %1

How to form the html string to display "<<ECW " ?

Maybe something using "htmlspecialchars" but i do not know how to.
'<' (less than) becomes "&lt"
'>' (greater than) becomes "&gt"

Chris Kawa

< and > are special characters in html so yes, you should use entities to display them. Second thing is - if you're passing a string literal as an argument why not embed it in the string in the first place?

QString tmpStr_tx = QString("<font color = \"red\"> ECW&lt;&lt; %1</font>").arg(ba2OutString(currMessage_tx));
ui->lvWidget->appendHtml(tmpStr_tx);

wally123

why not embed it in the string ...

because text of arg1 is dependend on arg2.
The literal is for testing now, but will be replaced by a QStringvariable
generated above this line in next version.

Thanks for the answer, hopefullyit will work in .arg( .... ) also.
Yup:

    QString tmpStr_tx = QString("<font color = \"red\"> %1 %2</font>").arg("&lt;&lt;ECW ").arg(ba2OutString(currMessage_tx));

Chris Kawa

@wally123 said:

hopefullyit will work in .arg( .... ) also.

It will. It's just constructing a string. The html parsing happens later, when you pass that string to appendHtml().

wally123

I need colored text for better reading and analyzing a protocol coming in as a lot of currMessages.
Any alternative suggestions to display colored text in QPlainTextEdit ?
I used the first possibility i found :)