Fixed windows' context not activated by default after their creation

git-svn-id: https://sfml.svn.sourceforge.net/svnroot/sfml/branches/sfml2@1119 4e206d99-4929-0410-ac5d-dfc041789085

samples/opengl/OpenGL.cpp

@@ -15,16 +15,16 @@
 ////////////////////////////////////////////////////////////
 int main()
 {
+    // Create main window
+    sf::RenderWindow App(sf::VideoMode(800, 600), "SFML OpenGL");
+    App.PreserveOpenGLStates(true);
+
     // Create a sprite for the background
     sf::Image BackgroundImage;
     if (!BackgroundImage.LoadFromFile("datas/opengl/background.jpg"))
         return EXIT_FAILURE;
     sf::Sprite Background(BackgroundImage);
 
-    // Create main window
-    sf::RenderWindow App(sf::VideoMode(800, 600), "SFML OpenGL");
-    App.PreserveOpenGLStates(true);
-
     // Load an OpenGL texture.
     // We could directly use a sf::Image as an OpenGL texture (with its Bind() member function),
     // but here we want more control on it (generate mipmaps, ...) so we create a new one from the image pixels

src/SFML/Window/ContextGL.cpp

@@ -55,7 +55,7 @@
 ////////////////////////////////////////////////////////////
 namespace
 {
-    // This thread-local variable will hold the "gloabl" context for each thread
+    // This thread-local variable will hold the "global" context for each thread
     sf::ThreadLocalPtr<sf::priv::ContextGL> ThreadContext(NULL);
 
     // Now we create two global contexts.

src/SFML/Window/Window.cpp

@@ -140,6 +140,7 @@ void Window::Create(VideoMode Mode, const std::string& Title, unsigned long Wind
     delete myWindow;
     myWindow = priv::WindowImpl::New(Mode, Title, WindowStyle);
 
+    {
         // Make sure another context is bound, so that:
         // - the context creation can request OpenGL extensions if necessary
         // - myContext can safely be destroyed (it's no longer bound)
@@ -150,6 +151,10 @@ void Window::Create(VideoMode Mode, const std::string& Title, unsigned long Wind
         myContext = priv::ContextGL::New(myWindow, Mode.BitsPerPixel, Settings);
 
         Initialize();
+    }
+
+    // Activate the window's context
+    SetActive();
 }
 
 
@@ -162,6 +167,7 @@ void Window::Create(WindowHandle Handle, const ContextSettings& Settings)
     Close();
     myWindow = priv::WindowImpl::New(Handle);
 
+    {
         // Make sure another context is bound, so that:
         // - the context creation can request OpenGL extensions if necessary
         // - myContext can safely be destroyed (it's no longer bound)
@@ -172,6 +178,10 @@ void Window::Create(WindowHandle Handle, const ContextSettings& Settings)
         myContext = priv::ContextGL::New(myWindow, VideoMode::GetDesktopMode().BitsPerPixel, Settings);
 
         Initialize();
+    }
+
+    // Activate the window's context
+    SetActive();
 }