Since we have learned how to process data obtained from an XML file in the previous recipe, we will move on to learning how to save data to an XML file. We will continue with the previous example and add to it.
We will learn how to save data into an XML file through the following steps:
First, add another button to
mainwindow.uiand set its object name assaveXmlButtonand its label as Save XML:
Next, right-click on the button and select Go to slot…. A window will pop up with a list of signals available for selection. Select the
clicked()option and click OK. A signal function calledon_saveXmlButton_clicked()will now be automatically added to both yourmainwindow.handmainwindow.cppfile by Qt:
After that, add the following code to the
on_saveXmlButton_clicked()function:QXmlStreamWriter xml; QString filename = QFileDialog::getSaveFileName(this, "Save Xml", ".", "Xml files (*.xml)"); QFile file(filename); if (!file.open(QFile::WriteOnly ...