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.