Compiling With Code Blocks

 #include <nel/misc/types_nl.h>
 #include <nel/3d/u_driver.h>
 #include <nel/3d/u_text_context.h>
 using namespace std;
 using namespace NLMISC;
 using namespace NL3D;
 // The 3d driver
 UDriver        *Driver = NULL;
 // This variable is used to display text on the screen
 UTextContext   *TextContext = NULL;
 // true if you want to exit the main loop
 bool            NeedExit = false;
 int main(int argc, char **argv)
 {
     // Create a driver
     Driver = UDriver::createDriver();
     nlassert(Driver);
     // Create the window with config file values
     Driver->setDisplay (UDriver::CMode(640, 480, 32));
     // Create a Text context for later text rendering
     TextContext = Driver->createTextContext ("data/n019003l.pfb");
     nlassert(TextContext);
     while ((!NeedExit) && Driver->isActive())
     {
         // Clear all buffers
         Driver->clearBuffers (CRGBA (0, 0, 0));
         // Display a text on the screen
         TextContext->setHotSpot (UTextContext::TopLeft);
         TextContext->setColor (CRGBA(255, 255, 255, 255));
         TextContext->setFontSize (14);
         TextContext->printfAt (0.01f, 0.99f, "Hello, World!");
         // Swap 3d buffers
         Driver->swapBuffers ();
         // Pump user input messages
         Driver->EventServer.pump();
         // Manage the keyboard
         if (Driver->AsyncListener.isKeyDown (KeySHIFT)
             && Driver->AsyncListener.isKeyDown (KeyESCAPE))
         {
             // Shift Escape -> quit
             NeedExit = true;
         }
     }
 }