toPlainText().toLatin1

()This method converts the plain text to a Latin1 encoded byte array. It is often used to convert text to a format that can be easily transmitted over a network or stored in a file.

Here's an example of how it can be used:

QString plainText = "Hello, world!";
QByteArray latin1Text = plainText.toPlainText().toLatin1();

In this example, the `plainText` variable contains the string "Hello, world!". The `toPlainText()` method is called to ensure that the text is in plain text format. The `toLatin1()` method is then called to convert the plain text to a Latin1 encoded byte array, which is stored in the `latin1Text` variable.

Note that the `toLatin1()` method can also be used on a `QString` directly, without first calling `toPlainText()`.