How to print text in Qt when a button is clicked

Question

I have been reading the Qt documentation for QPrinter and QPrintDialog but I cannot figure how to print the contents in a textEdit field.

Here is the code I have been try and which of course doesn't work.

#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <QDebug>
#include <QtPrintSupport/QPrinter>
#include <QtPrintSupport/QPrintDialog>
#include <QPainter>


void MainWindow::on_pushButton_clicked()
{
    QString textFromField = ui->textEdit->toPlainText();

    QPrinter printer;

    QPrintDialog *printDialog = new QPrintDialog(&printer, this);

    printDialog->setWindowTitle("Print Document");

    if(printDialog->exec() != QDialog::Accepted)
    {

    }

    QPainter painter;
    painter.begin(&printer);
    painter.drawText(100, 100, 500, 500,Qt::AlignLeft | Qt::AlignTop, textFromField);
    painter.end();
}

This is the output I get when I run it.

:-1: warning: directory not found for option '-F/Applications/Qt5.1.0//5.1.0/clang_64/qtbase/lib' :-1: error: symbol(s) not found for architecture x86_64

Any idea what am I doing wrong? Again all I want is to print the contents in a textEdit field.

Answer 1

The QTextEdit is just an editor for a QTextDocument, which is a powerful class that knows how to print it's content.

QTextDocument *doc = ui->textEdit->document();
doc->print(&printer);