Drawing a line between two mouse clicks

In this recipe, we will learn to draw a line between two mouse clicks. A mouse click is considered a procedure of pressing the mouse button and releasing it. You can draw as many lines as you want between a pair of mouse press and release events.

How to do it...

The following are the steps to draw a line between two mouse clicks:

1. Initialize GLUT, define the size of the top-level window, and display the window.

2. Define a drawLine callback function that draws a line if any mouse click event occurs.
3. In the drawLine function, the clear values for the clear buffers are specified.
4. The glutSwapBuffers() function is invoked to swap the front and back buffers to display any frame...