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This function will request that a system note (a window that is modal to the whole system) is shown. The note has a single OK button. This function enables non-GUI programs to show some information to the user. Applications that do have a GUI should not use this function but the hildon_note widget directly.  Parameters:
  
    |  | osso | The library context as returned by osso_initialize. |  |  | message | The contents for the system note. |  |  | type | The type of system note: OSSO_GN_WARNING - warning dialog with an exclamation mark icon, OSSO_GN_ERROR - error dialog, OSSO_GN_NOTICE - informative dialog with an 'i' icon. |  |  | retval | This parameter will be used to store possible return data of from the statusbar. If NULL, no data is expected, or it should be ignored. You should call osso_rpc_free_val for this structure when it is no longer needed. | 
 Returns:OSSO_OK if no errors occurred, OSSO_INVALID if some parameters are invalid, and OSSO_ERROR if some other error occurs. 
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