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  • I am new to QT...

    I am trying to create an application which reads some data from the database... while retreving the data i want to show the progress bar.

    Since i don't know how much amount of time will application take for retreving the data, so i m using the following code for creating busy progress bar.

    @static int count;
    progressbar = new QProgressBar(this);

    on the START button click event i m setting


    If user wants to stop the process in between i have given a CANCEL button
    on the CANCEL button click event i m setting


    But if I click on CANCEL button, the progress bar keeps on running, it doesn't reset.

    Please let me know if i m missing something here.

    [Edit: Code highlighting / Vass]

  • Try on cancel this:
    For example.

    And wrap your code in @ tags please (right button on panel)

  • I used the following code:

    @void MainWindow::on_Start_Button_clicked()

    void MainWindow::on_Stop_Button_clicked()

    It show the progess as 0% constantly.
    Please let me know what is wrong with the code.

  • Hi,

    if you set minimum and maximum, you tell progress bar its limits.
    You aditionally have to set progressBar->setValue(amountDone); with amountDone = % done. then you will see progress.

  • Hi....
    I don't know how much time will my application take for retreving the data, so in that case i m using the busy progressbar by setting maximum/minimum to 0/0.

    @void MainWindow::on_Start_Button_clicked()
    static int count = 0;
    void MainWindow::on_Stop_Button_clicked()

    This shows me the busy progress bar, but if i click on Stop button the progress bar is not getting reset. Please let me know do i need to do anything else for resetting the progress bar.

  • if min = max = 0, the progress bar is busy. To stop that, set min = 0, max = 1.

  • Thanks... it works :)

  • Or, you simply hide the progress bar, since nothing is progressing anyway.

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