Core XPCOM functions 编辑

XPCOM provides a number of global functions which are used to initialize and shut down the XPCOM library, as well as to allocate memory, get access to services, and to instantiate interfaces.

NS_Alloc

Infallibly allocates a block of memory using the XPCOM memory manager.

NS_Free

Frees a block of memory using the XPCOM memory manager.

NS_GetComponentManager

The NS_GetComponentManager function returns a reference to the XPCOM Component Manager.

NS_GetComponentRegistrar

The NS_GetComponentRegistrar function returns a reference to the XPCOM Component Registrar.

NS_GetMemoryManager

The NS_GetMemoryManager function returns a reference to the XPCOM Memory Manager.

NS_GetServiceManager

The NS_GetServiceManager function returns a reference to the XPCOM service manager.

NS_InitXPCOM2

The NS_InitXPCOM2 function initiates use of XPCOM in the calling process.

NS_InitXPCOM3

The NS_InitXPCOM3 function initiates use of XPCOM in the calling process with support for statically defined XPCOM modules.

NS_NewLocalFile

The NS_NewLocalFile function creates an instance of nsILocalFile that provides a platform independent representation of a file path.

NS_NewNativeLocalFile

The NS_NewNativeLocalFile function creates an instance of nsILocalFile that provides a platform independent representation of a file path.

NS_Realloc

Reallocates a block of memory using the XPCOM memory manager.

NS_ShutdownXPCOM

The NS_ShutdownXPCOM function terminates use of XPCOM in the calling process.

nsresult

The nsresult data type is a strongly-typed enum used to represent a value returned by an XPCOM function; these are typically error or status codes. For a list of defined result values, see Error codes returned by Mozilla APIs.