refs #485, use Q_INTERFACES as a way of avoiding dynamic_cast

src/blackgui/guiapplication.cpp

@@ -122,7 +122,7 @@ namespace BlackGui
 
     IMainWindowAccess *CGuiApplication::mainWindowAccess()
     {
-        IMainWindowAccess *m = dynamic_cast<IMainWindowAccess *>(mainApplicationWindow());
+        IMainWindowAccess *m = qobject_cast<IMainWindowAccess *>(mainApplicationWindow());
         return m;
     }
 

src/blackgui/guiapplication.h

@@ -47,6 +47,7 @@ namespace BlackGui
         public BlackGui::IMainWindowAccess
     {
         Q_OBJECT
+        Q_INTERFACES(BlackGui::IMainWindowAccess)
 
     public:
         //! Similar to \sa QCoreApplication::instance() returns the single instance

src/blackgui/mainwindowaccess.h

@@ -45,4 +45,6 @@ namespace BlackGui
     };
 } // ns
 
+Q_DECLARE_INTERFACE(BlackGui::IMainWindowAccess, "org.swift-project.blackgui.mainwindowaccess")
+
 #endif // guard

src/swiftcore/swiftcore.h

@@ -31,6 +31,7 @@ class CSwiftCore :
     public BlackMisc::CIdentifiable
 {
     Q_OBJECT
+    Q_INTERFACES(BlackGui::IMainWindowAccess)
 
 public:
     //! Constructor

src/swiftdata/swiftdata.h

@@ -35,6 +35,7 @@ class CSwiftData :
     public BlackGui::IMainWindowAccess
 {
     Q_OBJECT
+    Q_INTERFACES(BlackGui::IMainWindowAccess)
 
 public:
     //! Constructor

src/swiftguistandard/swiftguistd.h

@@ -49,6 +49,7 @@ class SwiftGuiStd :
     public BlackGui::IMainWindowAccess
 {
     Q_OBJECT
+    Q_INTERFACES(BlackGui::IMainWindowAccess)
 
 public:
     //! Main page indexes

src/swiftlauncher/swiftlauncher.h

@@ -37,6 +37,7 @@ class CSwiftLauncher :
     public BlackGui::IMainWindowAccess
 {
     Q_OBJECT
+    Q_INTERFACES(BlackGui::IMainWindowAccess)
 
 public:
     //! Constructor