The following events are available for the user to allow the actions that are available for standard marks, like: post-creation and double-click in-place editing or run-mode actions:

• MouseLeftButtonDown
• MouseLeftButtonUp
• MouseRightButtonDown
• MouseRightButtonUp
• MouseMoved
• MarkCreating
• MarkCreated

For example, you can handle MouseLeftButtonDown in your application. The ImageGear ART Forms will pass a reference to the clicked mark along with system mouse event arguments, and, if the clicked mark is of a needed type (not necessary custom) and Annotator is in needed mode (say, RUN), you can start some action.