Printing characters: help a newb!

[Baltor]

When I run this code:

#include <stdio.h>
#include <cstdlib>
#include <stdlib.h>
#include <algorithm>
#include <wchar.h>
#include <string>
#include <windows.h>
#include <GL/glut.h>    
#include <GL/gl.h>	
#include <GL/glu.h>
#include <game.hpp>
 
using namespace std;
 
// Non-specific functions
int randomRange(int lowestNumber, int highestNumber)
{
 if(lowestNumber > highestNumber)
  swap(lowestNumber, highestNumber);
 int range = highestNumber - lowestNumber + 1;
 return lowestNumber + int(range * rand()/(RAND_MAX + 1.0));
}
 
void printText(int startPosX, int startPosY, string text, float r, float g, float b) 
{
 int y = startPosY;
 int x;
 int fontWidth = 8;
 for (int i=1; i<=text.length(); i++)
 {
  x = startPosX + (i-1)*(fontWidth);
  glColor3f(r,g,b);
  glRasterPos2i(x,y);
  glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text[i-1]);
 }  
}
// End Non-specific functions
 
void displayDifficulty(void)
{
 glClear(GL_COLOR_BUFFER_BIT);
 string titleText("Asteroids - by Evan Patterson");
 string difficultyText("Press the coresponding number to select the difficulty");
 string difficulty1Text("1 -- What's Asteroids, anyway?");
 string difficulty2Text("2 -- I've played once or twice...");
 string difficulty3Text("3 -- I'm pretty darn good");
 string difficulty4Text("3 -- I'm master, bring it on!");
 printText(300, 150, titleText, 1.0, 1.0, 1.0);
 printText(300, 170, difficultyText, 1.0, 1.0, 1.0);
 printText(300, 180, difficulty1Text, 1.0, 1.0, 1.0);
 printText(300, 190, difficulty1Text, 1.0, 1.0, 1.0);
 printText(300, 200, difficulty1Text, 1.0, 1.0, 1.0);
 printText(300, 200, difficulty1Text, 1.0, 1.0, 1.0);
 glutSwapBuffers();
}
 
void keyboardDifficulty(unsigned char key, int x, int y)
{
 if (key == 49)
  Game::Game theGame(1); 
 if (key == 50)
  Game::Game theGame(2);
 if (key == 51)
  Game::Game theGame(3);
 if (key == 52)
  Game::Game theGame(4);
 if (key == 27)
  exit(0);
}
 
void reshape(int w, int h)
{
 glViewport (0, 0, (GLsizei) w, (GLsizei) h);
 glMatrixMode(GL_PROJECTION);
 glLoadIdentity();
 glOrtho(0, 800, 0, 600, 0, 0);
 glMatrixMode(GL_MODELVIEW);
 glLoadIdentity();
}
 
void init(void)
{
 glClearColor(0.0, 0.0, 0.0, 0.0);
 ShowCursor(FALSE);
 glutDisplayFunc(displayDifficulty);
 glutKeyboardFunc(keyboardDifficulty);
 glutReshapeFunc(reshape);
 glShadeModel(GL_FLAT);
}
 
int main(int argc, char** argv)
{
 glutInit(&amp;argc, argv);
 glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB);
 glutInitWindowSize(800, 600);
 glutInitWindowPosition(100, 100);
 glutCreateWindow("Asteroids by Evan Patterson");
 glutFullScreen();
 init();
 glutMainLoop();
 return 0;
}

I don't get an error, but the text is not displayed on the screen. I've used the printText function in previous programs and it has worked like a charm. Does anyone know how I might fix this problem?
Thanks in advance.

[plasmonster]

Try a range of depth values in the Ortho() call, like

glOrtho(0, 800, 0, 600, -999, 999).

[plasmonster]

Also, consider calling a function like this after a suspicious block of code. This may help you isolate problem code faster.

void checkGL( const char* msg = "GL ERROR" )
{
    GLenum error = glGetError();
    if( error != GL_NO_ERROR )
        printf( "%s: %s\n", msg, gluErrorString(error) );
}

[Baltor]

Thanks Q, got it working.