Qt3 library in Qt4 app

Hello!

I have some plugin (Qt3) and some Application(Qt4). When I try to load plugin I have a message in my stderr "Segmentation Faild". I'm entirely sure that when I creat QLibrary instance I set filename correctly. It's work properly under Windows, but in Linux does not. :(

Code:

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hLib = new QLibrary("classif");
hLib->load(); // <--segmination failure

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Check if hLib!=0. And then use a debugger to check what exactly causes the load() method to fail.

I checked - hLib != 0. How can I debug QLibrary::load() method?

I just ask another question - is it possible at all, the library I created in Qt3 use in Qt4. Anyone did it? (under Linux):confused: