When the general help window is requested, the Help Manager searches the help table for its identity. If the general help window identity associated with the current active window is zero, the Help Manager sends this message to the application to notify it that a general help window has not been defined. The application can then:

• Ignore the request for help and not display a help window.

• Display its own window.

• Use the HM_DISPLAY_HELP message to tell the Help Manager to display a particular window.