QT QTextBrowser disable write position when left-click

Question

I'm writing a QT application that includes QTextBrowser.

When the app doing some functions the function prints lines in the QTextBrowser and during write the lines if i press the mouse left button on any printed line on the QTextBrowser the app restart printing the lines from that line i pressed on.

how to prevent that ?

Example:

• all function output:

Device user: xvalid 1

Device model: alpha 16

Device name: Samsoni

Working stage: level 16

• during the lines printing if i press on second line with left mouse button this will happen:

Device user: xvalid 1

Device model: alpha 16 Device name: Samsoni

Working stage: level 16

as you see the app will re-set the start writing point from where i pressed

Answer 1

The docs indicates that when you use insertHtml() it is similar to:

edit->textCursor().insertHtml(fragment);

That is, the HTML is added where the cursor is and when you press with the mouse the cursor moves to the position where you click.

The solution is to move the cursor to the end:

QTextCursor cursor = your_QTextBrowser->textCursor(); // get current cursor
cursor.movePosition(QTextCursor::End); // move it to the end of the document
cursor.insertHtml(text); // insert HTML

Example:

#include <QApplication>
#include <QTextBrowser>
#include <QTimer>

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    QTextBrowser w;
    int counter = 0;

    QTimer timer;
    QObject::connect(&timer, &QTimer::timeout, [&w, &counter](){
        QString text = QString::number(counter);
        // at html
        QTextCursor cursor = w.textCursor();
        cursor.movePosition(QTextCursor::End);
        cursor.insertHtml(text);
        counter++;
    });
    timer.start(1000);
    w.show();
    return a.exec();
}