The CALLBKVB.frm Model A Visual Basic Programming Example with a Callback Function View the model Download the model A Visual Basic programming example of interfacing with the LINDO Callable Library that employs a Callback Function. The problem: MAX = 20 * A + 30 * C S.T. A + 2 * C <= 120 A <= 60 C <= 50 Solving such a problem with the LINDO Callable Library involves the following steps: 1. Create a LINDO environment. 2. Create a model in the environment. 3. Specify the model. 4. Perform the optimization. 5. Retrieve the solution. 6. Delete the LINDO environment. Keywords: Callable Library | Callback Function | Product Mix | Production | Programming | Project Management | Visual Basic |