QString arg

[PLUS]

I want to use QString to produce something like following:

This is number 99.

I should note that i want to be able to change it to the following if needed:

This_is_number_99.

or this one:

This-is-number-99.

in which spaces are dynamic, so I used this code:

QString test=" ";
QMessageBox::information(this,"Testing...",tr("This%1is%1number%199.").arg(test));

QString test=" ";
QMessageBox::information(this,"Testing...",tr("This%1is%1number%199.").arg(test));

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the problem is that, because %1 is followed by another number, it does not work as expected, please someone shows me a way to solve this,

any help is appreciated.

[high_flyer]

QMessageBox::information(this,"Testing...",tr(QString("This is number %1.").arg(99)));

QMessageBox::information(this,"Testing...",tr(QString("This is number %1.").arg(99)));

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But you can also do:

QMessageBox::information(this,"Testing...",tr(QString("This is number ")+QString::number(99)));

QMessageBox::information(this,"Testing...",tr(QString("This is number ")+QString::number(99)));

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[PLUS]

Thanks for your reply, but I think you didn't understand what I mean,

I want SPACES to be variable and that number is static!!

please someone helps if there is a way...

problem is not the number, problem is %1 followed by a number!

[faldzip]

That's what high_flyer said applied to your code:

QString test=" ";
QMessageBox::information(this,"Testing...",tr("This%1is%1number%1%2.").arg(test).arg(99));
 
// or
 
QString test=" ";
QMessageBox::information(this,"Testing...",tr("This%1is%1number%1.").arg(test)+QString::number(99));

QString test=" ";
QMessageBox::information(this,"Testing...",tr("This%1is%1number%1%2.").arg(test).arg(99));

// or

QString test=" ";
QMessageBox::information(this,"Testing...",tr("This%1is%1number%1.").arg(test)+QString::number(99));

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[PLUS]

That's what high_flyer said applied to your code:

QString test=" ";
QMessageBox::information(this,"Testing...",tr("This%1is%1number%1%2.").arg(test).arg(99));
 
// or
 
QString test=" ";
QMessageBox::information(this,"Testing...",tr("This%1is%1number%1.").arg(test)+QString::number(99));

QString test=" ";
QMessageBox::information(this,"Testing...",tr("This%1is%1number%1%2.").arg(test).arg(99));

// or

QString test=" ";
QMessageBox::information(this,"Testing...",tr("This%1is%1number%1.").arg(test)+QString::number(99));

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Thanks for your help,

thats a nice way, but I was looking for a more convenience way, like specifying {%1} or %{1} or similar things.

so there is no such way,

again thanks for your reply.

[faldzip]

Another thing which came to my mind is that maybe you can use QString::split() and QStringList::join():

QString test("_");
QString result = QString("This is number 99.").split(' ').join(test);
// this should give result = "This_is_number_99"

QString test("_");
QString result = QString("This is number 99.").split(' ').join(test);
// this should give result = "This_is_number_99"

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[franz]

Why not just

QString txt = "This is text with spaces";
txt.replace(" ", "_");

QString txt = "This is text with spaces";
txt.replace(" ", "_");

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[faldzip]

Why not just

QString txt = "This is text with spaces";
txt.replace(" ", "_");

QString txt = "This is text with spaces";
txt.replace(" ", "_");

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You're right... -_-'
sometimes the simplest solution is the last one you are thinking of :]