Save Adress and Load automatically

zheka777

Hey all,
i need some help please.
Here is a little programm:
!http://s1.directupload.net/images/131104/p5xazoki.jpg(picture)!

What the programm should do?

1. I write a String (16 characters for example: SWT1:SET:YV:LKN=5404) into the textEdit Widget.
1. Afterthat i want to save this Adress
1. I press the Button "Speichern" [Save]
1. Now programm should save this adress in a .txt file or similar file AND the adress must be written in the combobox now. So for example I saved 5 Adresses, so the combobox must have 5 Adresses, that i can select...
programm should load saved adresses (.txt file) automatically when I do start the programm

Can someone help me please`?

Jeroentjehome

Two ways to do so, use the QFile with QTextStream to store/read data from a text file.
Otherwise use QSettings class to store the files in registery/ini file etc depending on OS used.
Hope this gives some idea what to do.
Greetz

zheka777

EDIT: Or maybe more easyer:

I save the QStrings in the ComboBox... Someone idea how to do?

Yes, thaks for your answer...
But can someone give me a concret exapmle please?

The first what I have to do is to read the text from the textbox:
@void MainWindow::speichereText(QString text) {
QString a;
a = (ui->lineEdit_3->text());
text = a;
}@
The second step: I have to write it into the .txt File:
HOW?
@QFile file("out.txt");
if (!file.open(QIODevice::WriteOnly | QIODevice::Text))
return;

QTextStream out(&file&#41;;
out << "The magic number is: " << 49 << "\n";@

How Can I include here the Text, that i read from textbox?

The third: I have to write this text from .txt file in the Combobox as a List:
Here I dont also know HOW I can combine the text from .txt to ComboBox

SGaist

Hi,

Please, have a look at the documentation, "QComboBox::addItem":http://qt-project.org/doc/qt-5.0/qtwidgets/qcombobox.html#addItem

Jeroentjehome

Hi,
Don't expect us to code the simplest of things. The QFile and QCombobox documentation is perfectly clear, but since your a noob, I give it a short example code:
@
void MainWindow::SaveDataToFile(QComboBox * Box_p)
{
int NmbrOfItems (0);

if (Box_p->count() > 0)
{
    // STart a file &#40;try static function for new/open file?
    QFile File_fl(&"Your filename here"&#41;;
    QTextStream outFile(&File_fl&#41;;
    
    if (File_fl.open(QIODevice::ReadWrite&#41; == true)
    {
        // We have items in the list
        for (NmbrOfItems = 0; NmbrOfItems < Box_p->count(); NmbrOfItems++)
        {
            Box_p->setCurrentIndex(NmbrOfItems);
            // Add all items to the file
            outFile << Box_p->currentText();
            outFile << "/n";    // or any other seperation character!
        }
    }            
}

}
@
The reading of data goes the same way, but then do read from file until end.

Important: Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

Save Adress and Load automatically