The Message Log object adds a window where you can display messages to inform the user about operations that the application carries out. Implement this feature using the built-in message method with syntax: message(String message). See also GUI-Related Methods.

You can also display the value of a variable, including arrays, for example: message(double xcoordinate).

The Include standard message log toolbar checkbox is selected by default. When enabled, a toolbar appears in the Messages window, similar to the one in the COMSOL Desktop.

The Show COMSOL messages checkbox is selected by default to enable messages from the built-in COMSOL Multiphysics core algorithms, such as geometry operations, meshing, and solving. Clear the checkbox to only allow messages from the application itself. You can include time stamps to message by selecting the Add timestamps to messages checkbox.

The figure below shows a customized message window with convergence information from a method (left) and the corresponding Message Log form object (right).