2) before the row is accepted I want to check its data and eventually refuse them and force the user to continue the edit task.
I used the WhenAcceptRow to perform the checking (as done with ArrayCtrl but there it is a Gate - ). Unfortunatly the row is always accepted.
Which is the suggested method with GridCtrl to validate the data? This one works for ArrayCtrl but with GridCtrl complain about 'bool' returning value of the callback.