View Full Version : Another C++ Question
Here's something I've been wondering how to do for a while... I've seen it done in a few places, and I, frankly, have no idea where to look for how it was done.
Classnames as a parameter in a function. For example, va_arg's second parameter. Thanks a ton for any help.
maaaayyyte... you really need to find a C++ site, or something. here lies the opengl site.
but, anyway, classes are just like a type:
void foobar(Goat herd)
and so on.
oh, hang. let me wake up. <drinks coffee>
sorry, now i'm with you. va_arg is a macro, not a function def. you CAN"T give a "type" as a paramter. (there are ways of getting around this, notably fucntions ptrs in C and the whole object orientated / inheritenance stuff in C++)
va_arg is a macro with textual subsitution. for examole:
#define frog(t) sizeof(t)
means i can now do this:
and so on. because its JUST a macro. (va_arg uses the type to index the void ptr into the stack, incidentially)
[This message has been edited by john (edited 03-27-2001).]
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