hello,It is possible to replace default sharepoint list edit and display form with qrules form ?
No, I'm afraid not - list forms can't have code in them and that includes qRules.
You can use a regular InfoPath form with qRules to manage your list items - you just need to use other qRules logic to copy the list items into your main data source - here's a post with more info on that: http://www.infopathdev.com/files/folders/qrules/entry58577.aspx
Thx for your answer.
Can I use connection between Sharepoint list and Infopath Web Form (“Get Form From” or “Get Data From”) ? I need to select item to edit (in infopath web form) by selecting it in sharepoint list.