Pre-processing entered text in QTextDocument

[Santosh Reddy]

I think you are mixing up "Replace All" and "Auto Correction/Formatting" features, better to implement them separately.

I didn't find a method about this so I used QTextDocument::contentsChange() signal...

Method to find and replace: Use toPlainText(), replace the text and then it back setPlainText(). If using this inside a slot connected to contentsChange() signal, take care to blockSignals(true), and blockSignals(false) guard statements while setting the new text to avoid recursion.

MyTextDocument::on_contentsChange()
{
    blockSignals(true);
    QString text = toPlainText();
    // find and replace in text
    setPlainText(text);
    blockSignals(false);
}

MyTextDocument::on_contentsChange()
{
    blockSignals(true);
    QString text = toPlainText();
    // find and replace in text
    setPlainText(text);
    blockSignals(false);
}

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[srazi]

Thanks for your reply. But as I want do this pre-processing on the fly, using "setPlainText(text)" seems to be slow on large documents.