Christian Grauss wrote: t's probably a MACRO, so put your mouse over it and see if intellisense tells you what it really means. and if it doesn't, search for _RSA_FZM_CLASS into your hole project, and in the included files... TOXCCT >>> GEII power [toxcct][VisualCalc]

prat78 wrote: my question what exactly does the underscore before the IplImage structure represent. It frequently means that the object is Microsoft-specific, or that it is used internally. "Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

.hpp / .h++ / .hxx / .hh for C++ headers. .h should be reserved for C headers This is not respected though Papa while (TRUE) Papa.WillLove ( Bebe ) ;