Setting timeout for QLabel-Text without Signals&Sots

TUStudi

Hi,

I am working on a GUI-Application and I have different Buttons. Under every Button I have a QLabel, which should show a Message for a certain time, e.g. 3 seconds.
I do not want to use the status bar because it is not noticed at all or not immediately. I don't want to use a MessageBox either.
So, I have 8 QLabels and I wrote a function for filling these Labels with a message:

void MainWindow::setStatus(QString statusMessage, StatusWidget widget)
{

    switch(statusWidget){
    case Data:
        ui->dataStatus->setText(statusMessage);
       /*set time out 3 seconds here */
      /* ui->dataStatus->text().clear()*/
        break;

    case File:
        ui->fileStatus->setText(statusMessage);
       /*set time out 3 seconds*/
      /*ui->dataStatus->text().clear()*/
        break;

    ....
     }
}

Usage:

// When "ShowData" button is clicked..
void MainWindow::on_showData_clicked(){
    setStatus("The data is being retrieved. Please wait..",Data)
}

So i hav read that it is not recommendet to use a Thread.sleep(), what would be a good alternative here without forcing the GUI to wait until the timeout is reached?

JonB

@TUStudi

Setting timeout for QLabel-Text without Signals&Sots
So i hav read that it is not recommendet to use a Thread.sleep(),

That's because you should not use sleep() and you should use signals & slots. All you need to use here is a QTimer: set the text, set off the timer (singleShot() should do you), clear the text on timeout.

TUStudi

@JonB Thank you!