DataProxy.connectValidateRowChanges

gulong connectValidateRowChanges(T)(T callback,  Flag!"After" after =  No.After) if (isCallable!T
    &&  is(ReturnType!T ==  glib.error.ErrorWrap)
   && (Parameters!T.length <  1 || (ParameterStorageClassTuple!T[0]  ==  ParameterStorageClass.none &&  is(Parameters!T[0]  ==  int)))
   && (Parameters!T.length <  2 || (ParameterStorageClassTuple!T[1]  ==  ParameterStorageClass.none &&  is(Parameters!T[1]  ==  int)))
   && (Parameters!T.length <  3 || (ParameterStorageClassTuple!T[2]  ==  ParameterStorageClass.none &&  is(Parameters!T[2] :  gda.data_proxy.DataProxy)))
   &&  Parameters!T.length <  4)

Connect to ValidateRowChanges signal.

Gets emitted when proxy is about to commit a row change to the proxied data model. If any callback returns a non null value, then the change commit fails with the returned #GError

Parameters

`callback`	signal callback delegate or function to connect `glib.error.ErrorWrap callback(int row, int proxiedRow, gda.data_proxy.DataProxy dataProxy)` `row` the proxy's row (optional) `proxiedRow` the proxied data model's row (optional) `dataProxy` the instance the signal is connected to (optional) `Returns` a new #GError if validation failed, or null
`after`	Yes.After to execute callback after default handler, No.After to execute before (default)

Returns

Signal ID