hey there!

how can i use dlsym() to open a class name and its functions?
because my program have lots of classes. so i need to open first the class in order to call its functions.

thanks

Hey there!

That's not really what dlsym is for.

What language are these classes written in? Do that language have built-in support for dynamic loading (like Java, for example)?

If you're programming in C++, you can certainly use shared libraries ... but your shared object would typically contain *many* classes. And you'd have to invent your own protocol for a) "discovering" which library to load, and b) which class(es) to load from that library.

Apple has some very interesting guidelines for what kinds of things to consider if you wish to create your own shared libraries:

http://developer.apple.com/documenta...idelines.html#

I'm using c/c++ language in Linux platform (fedora core 6). I'm a newbie in creating shared libraries (dynamically) in linux. The only problem i have right now is how to use this dlsym(). I already google it and read articles concerning with this topic.

Below is my partial test code:

int main()
{
void* handle;

handle = dlopen ("/usr/local/lib/testdll.so", RTLD_LAZY);

if (handle == (void*)0)
{
fputs (dlerror(), stderr);
exit (-1);
}

...
...

dlclose (handle);
}

I don't know how to implement my dlsym() in this code.

here's my test program (not for dll).
int main()
{
CToyControl *lc;
lc = new CToyControl (" ", NULL);

...
...

return 0;
}