On 01/06/11 21:27, Malcolm Poole wrote:
Working from the instructions in CinFreepascal.pdf (
ftp://ftp.freepascal.org/pub/fpc/docs-pdf/CinFreePascal.pdf ) I have
written an interface library to the C++ library libtesseract (
http://code.google.com/p/tesseract-ocr ).
Everything appears to work well but I am unsure about how to free memory
which has been reserved by a libtesseract function and returned as a
result. The original documentation states that "The calling function
must delete [] after use", but the application crashes with an Access
Violation if I try to free the memory with Dispose or Freemem. I can
confirm that the array of Integer pointed to by the result of
tesseract_AllWordConfidences contains valid data.
If you add cmem to the start of your uses list, all the memory
operations are routed through the c memory manager. You should then be
able to use Free safely for pointers that were allocated by your library.
I'm planning some ocr work in the near future, so let us know if this works!
Henry
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