[Interest] QQmlExtensionPlugin not loading

[Martin Leutelt]

 From:   Jesper Huijgens <jesper.huijgens at sioux.eu> 
 To:   <interest at qt-project.org> 
 Sent:   3/9/2018 2:24 PM 
 Subject:   Re: [Interest] QQmlExtensionPlugin not loading 


     With QML_IMPORT_TRACE I see again the right folders. But I do not     see any attempt of loading the plugin.


You're missing an import statement in your main.qml to load your plugin (see http://doc.qt.io/qt-5/qtqml-modules-cppplugins.html).
addPluginPath()/addLibraryPath() isn't necessary for QML plugins, but (depending on your project hierarchy or how your application is installed/deployed) you might need addImportPath().



     
     Kind regards,
     Jesper


Regards
Martin



     
     
On 09-03-18 14:20, Martin Leutelt       wrote:
                        
       
           From:          Jesper Huijgens <jesper.huijgens at sioux.eu>         
                    To:          <interest at qt-project.org>         
                    Sent:          3/9/2018 2:04 PM         
                    Subject:          [Interest] QQmlExtensionPlugin not loading         
         
         Hi all,           
           
           For our project we see that QQmlExtensionPlugins are not           loaded.           
           I made a very basic example project that creates a           QQmlExtensionPlugin           
           and an application that should use. The plugin, with the           corresponding           
           qmldir, are placed in a plugin subdir in the output directory           of the           
           application.           
           The application sets both libraryPath and pluginPath. I output           the           
           pluginPathList(), I see what I think are the correct folders           on the           
           debug output.           
           
           I placed a qDebug() in registerTypes of the plugin. I see           nothing on the           
           debug output.           
           
           Setting QT_DEBUG_PLUGINS to 1 show me a lot of libraries being           loaded.           
           But not my plugin.           
           
                       

              
Try QML_IMPORT_TRACE instead, since QT_DEBUG_PLUGINS is for         debugging plugins for Qt itself, not the QML engine.       
       
         I work on           KDE Neon with g++ 5.4.0, CMake 3.10.0 and Qt 5.10.           
           
           Kind regards,           
           Jesper           
           
           
                       

              
Regards       
Martin       
       
         
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