Defines the return values for global-level notifications.
Indicates that IIS should continue processing additional global-level notifications.
Indicates that IIS has finished processing global-level notifications and should not process any additional global-level notifications.
The members of the GLOBAL_NOTIFICATION_STATUS enumeration are used as return values from global-level notifications, and the members help to control process flow within the global-level notification processing pipeline. For example, returning GL_NOTIFICATION_CONTINUE from a global-level notification handler instructs IIS to continue processing additional global-level notifications, whereas returning GL_NOTIFICATION_HANDLED from a global-level notification handler informs IIS that global-level processing is complete and IIS should not process additional global-level notifications.
The following code example demonstrates how to create a simple "Hello World" global-level HTTP module. The module defines an exported RegisterModule function that creates an instance of a class that is derived from CGlobalModule. If the class cannot be created, the function exits with an error code; otherwise, the function calls the IHttpModuleRegistrationInfo::SetRequestNotifications method to register for the GL_PRE_BEGIN_REQUEST notification.
When a GL_PRE_BEGIN_REQUEST notification occurs, IIS calls the module's CGlobalModule::OnGlobalPreBeginRequest method to process the notification. The method calls a private method to write an event to the application log of the Event Viewer, and then it returns GL_NOTIFICATION_CONTINUE to notify IIS to continue processing other notifications. When processing is complete, IIS calls the module's CGlobalModule::Terminate method to remove the class from memory.