Due to the weak couplings of the Qt signals and slot mechanisms, it is viable to bind ⭕️ signals to each other. It may sound confusing, so let me draw a diagram to make it clear: When an ⭕️ event triggers a specific signal, this emitted signal could be another event, which will emit another specific signal.

To use ⭕️ the property-based API, construct an instance of QMessageBox, set the desired properties, and call exec() to show the message. The ⭕️ simplest configuration is to set only the message text property. QMessageBox msgBox; msgBox. setText("The document has been modified."); msgBox.