If you select a class name or data member name in a Browser Window, and the declaration is shown in the Source pane, double-click the name to open the file that contains the declaration. (If you select or double-click a routine name, you see the definition).
If you click the Class Declaration button in the Browser window, you see a class declaration in the Source pane.
When you right-click (Windows) or click and hold (Mac OS, Solaris, and Linux) on a name in any window, use the Browser Contextual Menu to open the declaration. This technique lets you see a routine declaration.