#include <windows.h>
#include <gl/gl.h>
#include <gl/glu.h>
#include <gl/glaux.h>
#include <gl/glut.h>


//////////////////////////////////////////////////////////////////

//				constants

//////////////////////////////////////////////////////////////////


#define xWindowWidth	800
#define xWindowHeight	600

bool xFullScreen = false;


//////////////////////////////////////////////////////////////////

//				Function Prototyps

//////////////////////////////////////////////////////////////////


GLvoid InitGL(GLvoid);
GLvoid DrawGLScene(GLvoid);
GLvoid ResizeGLScene(GLsizei width, GLsizei height);
GLvoid KeyPress(unsigned char key, int px, int py);
GLvoid InitWindow(GLvoid);

int main(int argc, char ** argv)  {
	glutInit(&argc, argv);
	glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH);
	//glutGameModeString("800x600:32@60");

    //glutEnterGameMode();

	glutInitWindowSize(xWindowWidth, xWindowHeight);
	glutInitWindowPosition(100, 100);
	glutCreateWindow("Code Shell");

	InitGL();

	InitWindow();

	glutMainLoop();

	return 0;
}

GLvoid InitGL(GLvoid)  {
	glShadeModel(GL_SMOOTH);
	glClearColor(0.8f, 0.8f, 0.9f, 0.0f);
	glClearDepth(1.0f);
	glEnable(GL_DEPTH_TEST);
	glDepthFunc(GL_LEQUAL);
	glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
}

GLvoid InitWindow(GLvoid)  {
	glutDisplayFunc(DrawGLScene);
	glutReshapeFunc(ResizeGLScene);
	glutIgnoreKeyRepeat(1);
	glutKeyboardFunc(KeyPress);
	ResizeGLScene(xWindowWidth, xWindowHeight);				//called to force Projection

}

GLvoid DrawGLScene(GLvoid)  {
	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);			// Clear The Screen And The Depth Buffer

	glLoadIdentity();

	glPushMatrix();		//saves matrix to stack


	glTranslatef(-1.5f,0.0f,-6.0f);					// Move Left 1.5 Units And Into The Screen 6.0

	glBegin(GL_TRIANGLES);						// Drawing Using Triangles

		glColor3f(1.0f,0.0f,0.0f);
		glVertex3f( 0.0f, 1.0f, 0.0f);				// Top

		glColor3f(0.0f,1.0f,0.0f);
		glVertex3f(-1.0f,-1.0f, 0.0f);				// Bottom Left

		glColor3f(0.0f,0.0f,1.0f);
		glVertex3f( 1.0f,-1.0f, 0.0f);				// Bottom Right

		glColor3f(0.0f,0.0f,0.0f);
	glEnd();

	glPopMatrix();		//restores matrix from stack


	glutSwapBuffers();

}

GLvoid ResizeGLScene(GLsizei width, GLsizei height)  {
	if(height == 0)
		height = 1;

	glViewport(0, 0, width, height);
	glMatrixMode(GL_PROJECTION);						
	glLoadIdentity();							

	// Calculate The Aspect Ratio Of The Window

	gluPerspective(45.0f,(GLfloat)width/(GLfloat)height,0.1f,100.0f);

	glMatrixMode(GL_MODELVIEW);					
	glLoadIdentity();							
}

GLvoid KeyPress(unsigned char key, int px, int py)  {
	if(key == 13 && glutGetModifiers() == GLUT_ACTIVE_ALT)  {  //alt + enter go fullscreen

		if(xFullScreen == false)  {
			glutGameModeString("800x600:32@60");
			glutEnterGameMode();
			InitGL();
			InitWindow();
			glutSetCursor(GLUT_CURSOR_NONE);
		}else{
			glutLeaveGameMode();
		}
		xFullScreen = !xFullScreen;
	}
}

Ok this is edited now.... It works when i press alt+enter to go fullscreen, however it leaves the original window there too. Is the original window going to be hendering performance in the future? Or will it not matter because its no longer active. Is there a way to get rid of the original window and when i press alt enter again it comes back? I know this is a really simple program, but i figured my base code for all future programs better start off right in the first place. [edited by - justinwalsh on November 10, 2003 9:52:13 PM]

yeah i guess is is its own window, but now i edited the original post so read it again.

ok well after all this time spent with glut, it looks like i must ditch it. Glut will not hardware accelerate on my win32 computer. If anyone knows why let me know, i can run quake3 just fine at 100''s of frames per second, but i cant even render a spinning cube at more than about 20-30 in 800x600 mode.