问题
So I see samples all around on saving into file. But I wonder if it is possible to save into char* or string instead of file - so to say keep it in memory?
回答1:
There doesn't seem to be anything to facilitate this in boost itself. All I/O seems to be based on supplying filenames.
However, there seems to be an extension here called io_new that has streams based I/O.
See documentation here for an example (search for "Reading And Writing In-Memory Buffers").
来源：https://stackoverflow.com/questions/8039199/boostgil-how-to-save-image-as-jpeg-or-png-into-char