exit gracefully and call destructor of the current active example

fflush after printf
implemented stepForward and Shutdown for the SharedMemory client/server

examples/ExampleBrowser/GwenGUISupport/gwenUserInterface.cpp

@@ -42,13 +42,17 @@ class MyMenuItems :  public Gwen::Controls::Base
 public:
 
     b3FileOpenCallback m_fileOpenCallback;
+    b3QuitCallback m_quitCallback;
     
     MyMenuItems() :Gwen::Controls::Base(0),m_fileOpenCallback(0)
     {
     }
     void myQuitApp( Gwen::Controls::Base* pControl )
     {
-        exit(0);
+        if (m_quitCallback)
+        {
+            (*m_quitCallback)();
+        }
     }
     void fileOpen( Gwen::Controls::Base* pControl )
     {
@@ -74,7 +78,8 @@ struct MyTestMenuBar : public Gwen::Controls::MenuStrip
 		{
 			m_menuItems = new MyMenuItems();
             m_menuItems->m_fileOpenCallback = 0;
-
+            m_menuItems->m_quitCallback = 0;
+            
 			m_fileMenu = AddItem( L"File" );
 			
             m_fileMenu->GetMenu()->AddItem(L"Open",m_menuItems,(Gwen::Event::Handler::Function)&MyMenuItems::fileOpen);
@@ -230,6 +235,11 @@ void GwenUserInterface::registerFileOpenCallback(b3FileOpenCallback callback)
     m_data->m_menuItems->m_fileOpenCallback = callback;
 }
 
+void GwenUserInterface::registerQuitCallback(b3QuitCallback callback)
+{
+    m_data->m_menuItems->m_quitCallback = callback;
+}
+
 void	GwenUserInterface::init(int width, int height,Gwen::Renderer::Base* renderer,float retinaScale)
 {
 	m_data->m_curYposition = 20;

examples/ExampleBrowser/GwenGUISupport/gwenUserInterface.h

@@ -6,6 +6,7 @@ struct GwenInternalData;
 typedef void (*b3ComboBoxCallback) (int combobox, const char* item);
 typedef void (*b3ToggleButtonCallback)(int button, int state);
 typedef void (*b3FileOpenCallback)();
+typedef void (*b3QuitCallback)();
 
 namespace Gwen
 {
@@ -53,6 +54,7 @@ class GwenUserInterface
 		
 
         void    registerFileOpenCallback(b3FileOpenCallback callback);
+        void    registerQuitCallback(b3QuitCallback callback);
     
 		GwenInternalData* getInternalData()
 		{

examples/ExampleBrowser/OpenGLExampleBrowser.cpp

@@ -88,7 +88,18 @@ int gGpuArraySizeZ=15;
 
 
 
-
+void deleteDemo()
+{
+    if (sCurrentDemo)
+	{
+		sCurrentDemo->exitPhysics();
+		s_instancingRenderer->removeAllInstances();
+		delete sCurrentDemo;
+		sCurrentDemo=0;
+		delete s_guiHelper;
+		s_guiHelper = 0;
+	}
+}
 
 
 b3KeyboardCallback prevKeyboardCallback = 0;
@@ -163,6 +174,7 @@ void MyKeyboardCallback(int key, int state)
 #endif
 	if (key==B3G_ESCAPE && s_window)
 	{
+        
 		s_window->setRequestExit();
 	}
 
@@ -270,15 +282,8 @@ void selectDemo(int demoIndex)
 	{
 		demoIndex = 0;
 	}
-	if (sCurrentDemo)
-	{
-		sCurrentDemo->exitPhysics();
-		s_instancingRenderer->removeAllInstances();
-		delete sCurrentDemo;
-		sCurrentDemo=0;
-		delete s_guiHelper;
-		s_guiHelper = 0;
-	}
+	deleteDemo();
+    
 	CommonExampleInterface::CreateFunc* func = gAllExamples->getExampleCreateFunc(demoIndex);
 	if (func)
 	{
@@ -495,6 +500,12 @@ struct GL3TexLoader : public MyTextureLoader
 	}
 };
 
+void quitCallback()
+{
+   
+    s_window->setRequestExit();
+}
+
 void fileOpenCallback()
 {
 
@@ -581,6 +592,7 @@ OpenGLExampleBrowser::OpenGLExampleBrowser(class ExampleEntries* examples)
 
 OpenGLExampleBrowser::~OpenGLExampleBrowser()
 {
+    deleteDemo();
 	gAllExamples = 0;
 }
 
@@ -790,7 +802,7 @@ bool OpenGLExampleBrowser::init(int argc, char* argv[])
 	}
 	
     gui->registerFileOpenCallback(fileOpenCallback);
-	
+	gui->registerQuitCallback(quitCallback);
     
 	return true;
 }