Presence and Messaging SDK Callbacks
| GPCallback | A generic callback definition used to specify the callback supplied to GP SDK functions. |
| gpSendFilesCallback | This is a callback used by gpSendFiles() to get the list of files to send. |
| GPCallback | A generic callback definition used to specify the callback supplied to GP SDK functions. |
| gpSendFilesCallback | This is a callback used by gpSendFiles() to get the list of files to send. |