Tags Archives: faq

Add/Remove operation is impossible, the code element ‘Cxxx’ is read only

  When attempting to add a Control Event Handler to a control on a dialog, we are encountering the message: Add/Remove operation is impossible, the code element ‘Cxxx’ is read only. After an hour of trying to solve it my self, a quick Google search turned up the following solutions. Add random charters to the [...]