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Clarion in general: Loading clarion DLL and execute a procedure 2002-12-16 -- Andy Ireland Newsgroups: softvelocity.products.c55ee
Incidently, you should ref count the loaded DLL and unload when nobody is
using the class by implementing something like the IUnknown Interface on the
class and calling AddRef / Release and when the ref count is zero, call
FreeLibrary. LoadLibrary would be done in a Create method or the constructor
as would the calls to GetProcAddress, then and only if initialised, allow a
call to that method by maybe wrapping the call with a check to a method
like....
fInited = self.IsInitialised()
assert(fInited)
if fInited
return pProcToCall(....).
return false
i.e. a Debug and runtime check, but prevent a GPF.
HTH
Regards
Andy
Plugware Solutions.com Ltd, taking the puzzle out of I.T
Tel : +44 1249 813335
Fax : +44 1249 813462
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