Platform: documentation updates.

It looks much better now without all that explicit/implicit deletion.

doc/platform.dox

@@ -147,8 +147,10 @@ window size 800x600 pixels). If you want something else, you can pass
 constructor. Using method chaining it can be done conveniently like this:
 @code
 MyApplication::MyApplication(int& argc, char** argv):
-    Platform::GlutApplication(argc, argv, (new Configuration)
-        ->setTitle("My Application")->setSize({800, 600}) {
+    Platform::GlutApplication(argc, argv, Configuration()
+        .setTitle("My Application")
+        .setSize({800, 600})
+    {
     // ...
 }
 @endcode
@@ -161,33 +163,30 @@ instead of Configuration instance and then specify it later with
 MyApplication::MyApplication(int& argc, char** argv): Platform::GlutApplication(argc, argv, nullptr) {
     // ...
 
-    createContext((new Configuration)
-        ->setTitle("My Application")
-        ->setSize(size));
+    createContext(Configuration()
+        .setTitle("My Application")
+        .setSize(size));
 
     // ...
 }
 @endcode
 
-The configuration passed to constructor and @ref GlutApplication::createContext() "createContext()"
-is automaticall deleted afterwards and if the context creation fails, the
-application exits. However, it is also possible to negotiate the context using
-@ref GlutApplication::tryCreateContext() "tryCreateContext()". The major
-difference is that this function returns `false` instead of exiting and it
-doesn't delete the configuration afterwards so you can reuse it. You can for
-example try enabling MSAA and if the context creation fails, fall back to
-no-AA rendering:
+If the context creation in constructor or @ref GlutApplication::createContext() "createContext()"
+fails, the application exits. However, it is also possible to negotiate the
+context using @ref GlutApplication::tryCreateContext() "tryCreateContext()". The
+only difference is that this function returns `false` instead of exiting. You
+can for example try enabling MSAA and if the context creation fails, fall back
+to no-AA rendering:
 @code
 MyApplication::MyApplication(int& argc, char** argv): Platform::GlutApplication(argc, argv, nullptr) {
     // ...
 
-    auto conf = new Configuration;
-    conf->setTitle("My Application")
-        ->setSampleCount(16);
+    Configuration conf;
+    conf.setTitle("My Application")
+        .setSampleCount(16);
 
     if(!tryCreateContext(conf))
-        createContext(conf->setSampleCount(0));
-    else delete conf;
+        createContext(conf.setSampleCount(0));
 
     // ...
 }

src/Platform/AbstractXApplication.cpp

@@ -42,9 +42,11 @@ AbstractXApplication::AbstractXApplication(AbstractContextHandler<Display*, Visu
     createContext(configuration);
 }
 
+#ifndef DOXYGEN_GENERATING_OUTPUT
 AbstractXApplication::AbstractXApplication(AbstractContextHandler<Display*, VisualID, Window>* contextHandler, const Arguments&): contextHandler(contextHandler), c(nullptr), flags(Flag::Redraw) {
     createContext({});
 }
+#endif
 
 AbstractXApplication::AbstractXApplication(AbstractContextHandler<Display*, VisualID, Window>* contextHandler, const Arguments&, std::nullptr_t): contextHandler(contextHandler), c(nullptr), flags(Flag::Redraw) {}
 

src/Platform/AbstractXApplication.h

@@ -72,6 +72,7 @@ class AbstractXApplication {
          * @brief Default constructor
          * @param contextHandler OpenGL context handler
          * @param arguments     Application arguments
+         * @param configuration %Configuration
          *
          * Creates application with default or user-specified configuration.
          * See Configuration for more information. The program exits if the
@@ -89,7 +90,6 @@ class AbstractXApplication {
          * @brief Constructor
          * @param contextHandler OpenGL context handler
          * @param arguments     Application arguments
-         * @param configuration Configuration
          *
          * Unlike above, the context is not created and must be created later
          * with createContext() or tryCreateContext().

src/Platform/GlutApplication.cpp

@@ -38,10 +38,12 @@ GlutApplication::GlutApplication(const Arguments& arguments, const Configuration
     createContext(configuration);
 }
 
+#ifndef DOXYGEN_GENERATING_OUTPUT
 GlutApplication::GlutApplication(const Arguments& arguments): c(nullptr) {
     initialize(arguments.argc, arguments.argv);
     createContext({});
 }
+#endif
 
 GlutApplication::GlutApplication(const Arguments& arguments, std::nullptr_t): c(nullptr) {
     initialize(arguments.argc, arguments.argv);

src/Platform/NaClApplication.cpp

@@ -56,10 +56,12 @@ NaClApplication::NaClApplication(const Arguments& arguments, const Configuration
     createContext(configuration);
 }
 
+#ifndef DOXYGEN_GENERATING_OUTPUT
 NaClApplication::NaClApplication(const Arguments& arguments): Instance(arguments), Graphics3DClient(this), MouseLock(this), c(nullptr) {
     debugOutput = new ConsoleDebugOutput(this);
     createContext({});
 }
+#endif
 
 NaClApplication::NaClApplication(const Arguments& arguments, std::nullptr_t): Instance(arguments), Graphics3DClient(this), MouseLock(this), c(nullptr)  {
     debugOutput = new ConsoleDebugOutput(this);

src/Platform/Sdl2Application.cpp

@@ -54,10 +54,12 @@ Sdl2Application::Sdl2Application(const Arguments&, const Configuration& configur
     createContext(configuration);
 }
 
+#ifndef DOXYGEN_GENERATING_OUTPUT
 Sdl2Application::Sdl2Application(const Arguments&): context(nullptr), flags(Flag::Redraw) {
     initialize();
     createContext({});
 }
+#endif
 
 Sdl2Application::Sdl2Application(const Arguments&, std::nullptr_t): context(nullptr), flags(Flag::Redraw) {
     initialize();

src/Platform/WindowlessGlxApplication.cpp

@@ -39,9 +39,11 @@ WindowlessGlxApplication::WindowlessGlxApplication(const Arguments&, const Confi
     createContext(configuration);
 }
 
+#ifndef DOXYGEN_GENERATING_OUTPUT
 WindowlessGlxApplication::WindowlessGlxApplication(const Arguments&): c(nullptr) {
     createContext({});
 }
+#endif
 
 WindowlessGlxApplication::WindowlessGlxApplication(const Arguments&, std::nullptr_t): c(nullptr) {}
 

src/Platform/WindowlessNaClApplication.cpp

@@ -55,10 +55,12 @@ WindowlessNaClApplication::WindowlessNaClApplication(const Arguments& arguments,
     createContext(configuration);
 }
 
+#ifndef DOXYGEN_GENERATING_OUTPUT
 WindowlessNaClApplication::WindowlessNaClApplication(const Arguments& arguments): Instance(arguments), Graphics3DClient(this), c(nullptr) {
     debugOutput = new ConsoleDebugOutput(this);
     createContext({});
 }
+#endif
 
 WindowlessNaClApplication::WindowlessNaClApplication(const Arguments& arguments, std::nullptr_t): Instance(arguments), Graphics3DClient(this), graphics(nullptr), c(nullptr) {
     debugOutput = new ConsoleDebugOutput(this);