The prefix is a <const char*> - that means a string. Some keywords are prefixed with an arbitrary string to differentiate them from other similar keywords. For example, for the keyword "input_file", if you have two input filenames to specify:
The prefixes "image1" and "image2" are needed to differentiate the two entries. If you don't need to differentiate a keyword (i.e., you only have one occurrence), then leave the default prefix=0 (null string), and no prefix will be prepended to the keyword lookup.
From: bharti navlani <[hidden email]> To:[hidden email] Sent: Saturday, March 26, 2016 8:37 AM Subject: [OSSIM] savestate and loadstate functions