[Qt-interest] Plugin framework

[Andreas Pakulat]

On 23.11.09 23:52:40, Tim Peeters wrote:
> My apologies, I only discovered the QPluginLoader::errorString() function
> now.
> So if I include this line:
>     if (!loader.load()) cout<<"error:
> "<<qPrintable(loader.errorString())<<endl;
> instead of the cout<<"bla" below, it prints the following error message:
> 
> 
> error: Cannot load library
> /home/tim/dtibuild/new/bin/libbmia_BogusPlugin.so:
> (/home/tim/dtibuild/new/bin/libbmia_BogusPlugin.so: undefined symbol:
> _ZTV11BogusPlugin)
> 
> Unfortunately I still do not know how to solve this :(

Three things that come to my mind when reading your code:

a) no public constructor for BogusPlugin that takes a QObject parent

b) Plugins are usually built with the MODULE flag for add_library so
they don't get the lib prefix on linux

c) Q_EXPORT_PLUGIN2 expects a PluginName as first parameter and its said
this should match the TARGET in the .pro file. So you should probably
use the libraries basename there (i.e. bmia_BogusPlugin, if you use the
MODULE mode)

Andreas 

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