Den 22-07-2014 17:09, Graham Labdon skrev: > Hi > I am developing a set of plugins for my Qt application using VS 2012 > When I created the project I selected Qt Library as the project type, but > when I load the library with QPluginLoader the 'instance' method failed. > I then created another VS project using the 'Qt Application' as the project > type and deleted main.cpp and using the VS properties manager I set the > configuration type to Dynamic library, Using this method the plugin is loaded > and behaves as expected. > I have compared the VS configuration properties and they are identical. > I have created a .pro file for both projects using VS and they are also > identical. > > I would be grateful if you could tell me the reason for this
The only way I have found that it's possible to debug this is to singlestep through the Qt plugin loader code. One problem that I've seen multiple times in the Qt 4 (don't know if this is fixed in 5) is that if I have run the application in debug mode, the plugin system stores a list of known plugins in the config. So when I switched to debug, it still tries to load the debug plugin and that won't work. After deleting the file with the cache list, I could load the plugin. Sorry that I can't be of more help. Fire up the debugger :( Bo. -- Viking Software Qt and C++ developers for hire http://www.vikingsoft.eu _______________________________________________ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
