Basic OpenGl program

This is  OpenGL c++ basic program. Make sure your OpenGL completely configured in visual studio.

Open visual studio create a new program.

Select visual C++ and click on Empty Project . Edit name of your project and click Ok, It will create a new project.

Now in solution explorer right click on Source Files > Add > New Item

Select C++ File (.cpp) and click Add.

Now the Coding parts begins.

#include <windows.h>   // use as needed for your system
#include <glut.h>   //graphic libarary toolkit

//<<<<<<<<<<<<<<<<<<<<<<< myInit >>>>>>>>>>>>>>>>>>>>
void myInit(void)
{
glClearColor(0.0, 1.0, 0.0, 0.0);      // set the bg color to a bright green
glColor3f(0.0f, 0.0f, 0.0f);           // set the drawing color to black
glPointSize(4.0);            //set the point size to 4 by 4 pixels
glMatrixMode(GL_PROJECTION);        // set up appropriate matrices- to be explained
glLoadIdentity();                   // to be explained
gluOrtho2D(0.0, 640.0, 0.0, 480.0); // to be explained
}

//<<<<<<<<<<<<<<<<<<<<<<<< myDisplay >>>>>>>>>>>>>>>>>
// the redraw function
void myDisplay(void)
{
glClear(GL_COLOR_BUFFER_BIT);     // clear the screen


glFlush(); // send all output to display

}

//<<<<<<<<<<<<<<<<<<<<<<<< main >>>>>>>>>>>>>>>>>>>>>>
void main(int argc, char **argv)
{
glutInit(&argc, argv);          // initialize the toolkit
glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB); // set the display mode
glutInitWindowSize(640, 480);     // set the window size
glutInitWindowPosition(100, 150); // set the window position on the screen
glutCreateWindow("OpenGL Basic Program"); // open the screen window(with its exciting title)
glutDisplayFunc(myDisplay);     // register the redraw function
myInit();
glutMainLoop();     // go into a perpetual loop
}

Download Source Code

I will explain code in my next post.

Now Run you project . It will Show this output

If this output is showed on your screen your OpenGL is configured in visual studio. check my previous post to configure your visual studio and OpenGL.