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What is the best was to set a stream to global memory but have the flexibility to use the same kind of stream to read from a file?
I tried this:
filebuf fb;
fb.setbuf((char*)pBuffer, ::GlobalSize(hGlbl));
istream* s(fb);
this->FromStream(s);
But I cannot access setbuf. And I don't want to use IStream. I cannot compile it and I didn't see any MS reference to the lib it is defined in.
I guess what I need is some kind of memory stream to be able to set a pointer to the data and then set the size of the data within the stream like I tried above.
What would be perfect I think is a strstream but it is depreciated!
stringstream still exists. You only need to create a std::string from the memory:
Mind you, this COPIES the memory. You could also allocate the string with a custom allocator type that refers only to this memory block. The problem with that lies in the way allocators are handled, as they effectively can't have state.Code:std::istringstream stream(std::string(pBuffer, pBuffer+GlobalSize(hGlbl)));
How would I create a string and set it to that memory block and what is the problem with not having state?
The first is very hard without the second. That should answer both questions, if you read up on what allocators do.