void OnDoOperationClicked(object o, EventArgs args) { if (dataBook.NPages == 0) { return; } DataView dv = ((DataViewDisplay)dataBook.CurrentPageWidget).View; // get the operands as a byte array byte[] byteArray = null; try { byteArray = ParseOperand(); } catch (FormatException e) { ErrorAlert ea = new ErrorAlert(Catalog.GetString("Error in Operand"), e.Message, null); ea.Run(); ea.Destroy(); return; } /// get the range to apply the operation to Util.Range range = dv.Selection; if (range.IsEmpty()) { Util.Range bbRange = dv.Buffer.Range; range.Start = dv.CursorOffset; range.End = range.Start + byteArray.Length - 1; range.Intersect(bbRange); } // don't allow buffer modification while the operation is perfoming dv.Buffer.ModifyAllowed = false; dv.Buffer.FileOperationsAllowed = false; BitwiseOperation bo = new BitwiseOperation(dv.Buffer, byteArray, range, (OperationType)OperationComboBox.Active, Services.UI.Progress.NewCallback(), BitwiseOperationAsyncCallback, true); // start operation thread Thread boThread = new Thread(bo.OperationThread); boThread.IsBackground = true; boThread.Start(); }