* Add a BJoystick::RescanDevices() public function. It allows the BJoystick

to be updated with newly plugged in devices without the need to recreate a
  BJoystick object.
* Do an initial (re-)scan on object creation instead of always scanning in
  CountDevices() and by extension GetDeviceName().
* This makes CountDevices() and GetDeviceName() stable with regards to the
  device list, so that an enumerating application doesn't suddenly get more/less
  devices than it might expect.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@41870 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/os/device/Joystick.h

@@ -41,6 +41,12 @@ public:
 			status_t		GetDeviceName(int32 index, char* name,
 								size_t bufSize = B_OS_NAME_LENGTH);
 
+			status_t		RescanDevices();
+								// Haiku extension. Updates the list of devices
+								// as enumerated by CountDevices() and
+								// GetDeviceName() with possibly newly plugged
+								// in devices.
+
 			bool			EnterEnhancedMode(const entry_ref* ref = NULL);
 
 			int32			CountSticks();