Hi, I am new for Qt, i am trying to display 0 to 999 in text Browser but when i am executing following code it is directly showing 999 output can anyone help me, thank you in advance

[J.Hilk]

@Rameshwar like @JonB said, that is possible, but will look complicated

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

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);

    QTextBrowser *browser = new QTextBrowser();
    browser->setPlainText("0");
    browser->show();
    QTimer *t = new QTimer();

    int count = 0;

    QObject::connect(t, &QTimer::timeout, browser, [&count, t, browser]()->void{
        if(++count < 100){
            browser->append(QString::number(count));
        } else {
            t->stop();
        }
    });

    t->start(1000);

    return  a.exec();
}

[Rameshwar]

@J.Hilk
but this type not usefull on ui(user interface) window, i want to display this data on mainwindow.ui.

[SGaist]

Hi,

How is it not useful ? The QTimer approach is the right one if you want to display a progressive counter in a way that your application user can see it.

Using a loop like you do just blocks the event loop. That's why you only see the widget content after the loop ended.

[jsulm]

@Rameshwar If you need this code inside mainwindow then put it there, it isn't that hard.

[Rameshwar]

@jsulm
but if you write code inside mainwindow then , it does not display step by step directly it displays last value that is 999 or using append it displays 0,1,2.....999 once time but i want it displays step by step first it display "1" then increment (i++) then it display "2" then and again it (i++) increment by one and display 3....999.

[jsulm]

@Rameshwar Then you're doing it wrong. Please show your code.

[Rameshwar]

@jsulm

for(j=0;j<1000;j++)
// {
ui->textBrowser->setText(QString::number(j)); //display 0 to 999
// }
//your code here

[jsulm]

@Rameshwar This code is NOT what @J-Hilk suggested...

[Rameshwar]

@jsulm i want to display contineousaly some data after one second on window.ui

[jsulm]

@Rameshwar This is exactly what was already suggested (using QTimer). Did you try?!

[ODБOï]

@Rameshwar said in Hi, I am new for Qt, i am trying to display 0 to 999 in text Browser but when i am executing following code it is directly showing 999 output can anyone help me, thank you in advance:

i want to display contineousaly some data after one second on window.ui

everyone here understood your requirement! Solutions are suggested ! why don't you try instead of repeating the same thing over &over ?

[JonB]

@Rameshwar

• @J-Hilk has given you the necessary code to start from. That's why people type in answers to questions. First try that and verify it works.

• Then change it so that it writes on your mainwindow or whatever you want instead.

• Only after that, write back if you can't get what you want working.