QTextDocuments and QPlainTextEdits

[JordyD]

I'm using Qt Creator with Qt4. That's what I use to compile, build, and design the interface. This is in C++.

I have a simple problem. When I try to call setDocument on a QPlainTextEdit, it will compile, but during runtime, when I open a file it says:

QPlainTextEdit::setDocument: Document set does not support QPlainTextDocumentLayout

QPlainTextEdit::setDocument: Document set does not support QPlainTextDocumentLayout

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Here's the snippet of code that does this:

void CodeView::loadFile(QString filename)
{
    QFile file(filename);
    if (file.open(QIODevice::ReadOnly | QIODevice::Text)) {
        QString text = file.readAll();
        QTextDocument document;
        document.setPlainText(text);
        ui->plainTextEdit->setDocument(&document);
    }
    file.close();
}

void CodeView::loadFile(QString filename)
{
    QFile file(filename);
    if (file.open(QIODevice::ReadOnly | QIODevice::Text)) {
        QString text = file.readAll();
        QTextDocument document;
        document.setPlainText(text);
        ui->plainTextEdit->setDocument(&document);
    }
    file.close();
}

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If I call the setPlainText method on my QTextDocument, should it not already be in QPlainTextDocumentLayout?

Thanks,
Jordy