BApplication

• New version of the constructor returns a status_t by reference:

  BApplication(const char *signature, status_t *error);

  If there's a problem constructing the BApplication object, the error argument tells you what went wrong, but your app continues to run.  Previously, the constructor would exit if there was a problem.  If the object is successfully created, error is set to B_OK.  A list of other error codes is forthcoming.

• New InitCheck() returns the error code set by the constructor.

• New CountLoopers() and LooperAt() let you step through an application's list of loopers.

  int32 CountLoopers() const;          BLooper *LooperAt(int32 index) const;

• New "Loopers" scripting property lets you ask for an application's list of loopers specifiedby index or (thread) ID.  The loopers are returned (in "result") as an array of BMessenger objects.

BClipboard

• The new StartWatching() function lets you ask to be notified whenever the data on the clipboard changes.  The StopWatching() function cancels the request for notifications.  The notification's command constant is B_CLIPBOARD_CHANGED; the message looks like this:

  Field	Type	Meaning
  "be:clipboard"	B_STRING_TYPE	The clipboard's name.
  "be:count"	B_INT32_TYPE	The number of times data has been committed to the clipboard.  (This is the same as the number returned by the new SystemCount() function, described below.)

• The new SystemCount() function returns the current commit count for a BClipboard's underlying clipboard repository.  This is a count of the number of times data has been committed to the clipboard, system-wide.

• The new LocalCount() function returns the system-wide commit count number that designates the last commit made from the calling BClipboard object -- in other words, LocalCount() is an index into the metric provided by SystemCount(). 

BMessage

• New Rename() function makes it easy to rename a message field.

  status_t  Rename(const char *old_name, const char *new_name);

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