0008239: Foundation Classes - directive "using namespace std" doesn't allow to build application with OCC and other 3rd party libraries

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Summary	0008239: Foundation Classes - directive "using namespace std" doesn't allow to build application with OCC and other 3rd party libraries

Revision	2012-01-19 14:38 by atp
Description	If custom application uses the OCC and other 3rd party library (for example VTK or Qt) based on ANSI streams then compiler fails during determination stream symbols: istream, ostream, ... (compiler error C2872). Directive "using namespace std" export the all symbol from std namespace into global scope. Possible solution is not to use directive "using namespace std", but explicitly specify STL stream symbols (std::ostream) and define preprocessor directive as namespace prefix name for it. Enclosed archive (OCC_Streams.tgz) contains example which illustrate proposed solution with preprocessor directive OCC_STREAM_STD. Do not hestitate to contact me. Regards, STV

Revision	2007-07-06 16:22 by atp
Description	If custom application uses the OCC and other 3rd party library (for example VTK or Qt) based on ANSI streams then compiler fails during determination stream symbols: istream, ostream, ... (compiler error C2872). Directive "using namespace std" export the all symbol from std namespace into global scope. Possible solution is not to use directive "using namespace std", but explicitly specify STL stream symbols (std::ostream) and define preprocessor directive as namespace prefix name for it. Enclosed archive (OCC_Streams.tgz) contains example which illustrate proposed solution with preprocessor directive OCC_STREAM_STD. Do not hestitate to contact me. Regards, Sergey TELKOV