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Calculation stops when using QMessageBox -> critical()

  • Hello,

    in my programm I use a QMessageBox to display an Error (when closing the application while (Real-Time- ) calculation runs).
    Now I have the problem, that the calculation stops until the QMessageBox is closed.

    This is my code:
    @if (this->communicate) {
    QMessageBox messageBox;
    messageBox.critical(0, "Warning", "Still communicating!");
    messageBox.setFixedSize(500, 200);

    Is there a way to let my Programm continue its calculation while the QMessageBox is open?


  • Lifetime Qt Champion

    Hi and welcome to devnet,

    You have to setup the message box completely yourself and call either show or open for that.

    critical() is a static function calling exec thus the blocking behavior (and you are using it wrong)

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