Re: [Boost-Users] Re: Using boost::function with VC6

...

Just rewrite the line that constructs bind something like this:

bf = boost::bind(&MyClass::MyMember,&mcl, _1, _2, _3);

Thanks, that works. I had assumed that if the ordinal positions are not supplied, that they would just go in order. Evidently ever parameter not supplied must be given an ordinal position. That makes sense since bind needs to know how many parameters there are. The documentation is really deficient in explaining this.

It does skim over it a bit, but it's there in the examples. Like I said I did it wrong the first time too, but it does make sense as you say.

However it doesn't work in VC6 if I change my member function to have 'void' return and I change my boost::function signature to boost::function3 bf; . Now I get:

error C2562: '()' : 'void' function returning a value etc. What a PITA !

Hmmm... I tried your example code (now I have access to my dev machine) and it worked fine for me with a void function. You didn't forget to remove the return statement (probably returning "a") from your method did you? It is true that VC++ 6 doesn't have void returns, but those clever chaps who wrote boost::function worked around it so it works as it should :-) If you definitely did remove your return statement then post the full code again here for further inspection. Regards, [)o IhIL..