How increase and decrease progress bar with checkbox in Qt?-CodePudding

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I want when i check each box, progress bar increase and when i unchecked box, progress bar decreased .

CodePudding user response：

Connect to QCheckBox::stateChanged(int state) signal, and change the progressbar value according to signal state.

Edit

Following the comments, I will update the answer further more. Like I said you need to connect to QCheckBox::stateChanged(int state) signal from each QCheckBox you have.

To connect to signal you use:

connect(ui->checkBox, &QCheckBox::stateChanged, this, &MainWindow::Update_ProgressBar);
connect(ui->checkBox_2, &QCheckBox::stateChanged, this, &MainWindow::Update_ProgressBar);
...

And the slot will be:

void MainWindow::Update_ProgressBar(int value)
{
    int currentValue = ui->progressBar->value();
    if(value == 0)ui->progressBar->setValue(currentValue - 20);
    else ui->progressBar->setValue(currentValue   20);
}