Qt4 - Try to improve quitting of the application... Ref #1397

modules/gui/qt4/dialogs/open.hpp

@@ -42,6 +42,11 @@ public:
     static OpenDialog * getInstance( QWidget *parent, intf_thread_t *p_intf,
                                      int _action_flag = 0, bool modal = false  );
 
+    static void killInstance()
+    {
+        if( instance ) delete instance;
+        instance = NULL;
+    }
     virtual ~OpenDialog();
 
     void showTab( int );

modules/gui/qt4/dialogs_provider.hpp

@@ -112,7 +112,7 @@ public:
     static void killInstance()
     {
         if( instance ) delete instance;
-        instance=NULL;
+        instance = NULL;
     }
     virtual ~DialogsProvider();
     QTimer *fixed_timer;

modules/gui/qt4/input_manager.cpp

@@ -214,7 +214,6 @@ void InputManager::customEvent( QEvent *event )
          return;
     }
 
-
     IMEvent *ime = static_cast<IMEvent *>(event);
 
     if ( type == PositionUpdate_Type )

modules/gui/qt4/main_interface.cpp

@@ -1132,9 +1132,7 @@ void MainInterface::wheelEvent( QWheelEvent *e )
 void MainInterface::closeEvent( QCloseEvent *e )
 {
     hide();
-    vlc_object_kill( p_intf );
-    QApplication::closeAllWindows();
-    QApplication::quit();
+    THEDP->quit();
 }
 
 /*****************************************************************************

modules/gui/qt4/qt4.cpp

@@ -289,7 +289,6 @@ static void Init( intf_thread_t *p_intf )
         p_mi->show();
     }
     else
-    /*if( p_intf->pf_show_dialog )*/
         vlc_thread_ready( p_intf );
 
 #ifdef ENABLE_NLS
@@ -327,8 +326,18 @@ static void Init( intf_thread_t *p_intf )
     app->exec();
 
     /* And quit */
-    MainInputManager::killInstance();
+
+    /* Destroy first the main interface because it is connected to some slots
+       in the MainInputManager */
+    if( p_intf->p_sys->p_mi ) delete p_intf->p_sys->p_mi;
+
+    /* Destroy then other windows, because some are connected to some slots
+       in the MainInputManager */
     DialogsProvider::killInstance();
+
+    /* Destroy the MainInputManager */
+    MainInputManager::killInstance();
+
     delete app;
 }