Window movement redisplays it but not before.

OpenGL OpenGL: Basic Coding
1

Hi,

So, I have the following function that is passed in the “glutDisplayFunc”.

void drawScene() {
	//Clear information from last draw
	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
	
	glMatrixMode(GL_MODELVIEW); //Switch to the drawing perspective
	glLoadIdentity(); //Reset the drawing perspective
	//Declare varaibles.
	//This is for rows.
	int row = 0;
	//Goes through array NOT for the drawing.
	int i;
	//This is for drawing. Because it can be reset with affecting the length of the loop.
	int g;
	for (i = 0; i < 100; i++)
	{
		g++;
		if (cellActivation[i] == false)
		{
			glColor3f(1.0f, 1.0f, 1.0f);
			glBegin(GL_QUADS);
			glVertex3f(g-3, row, -10);
			glVertex3f(g-2, row, -10);
			glVertex3f(g-2, row-1, -10);
			glVertex3f(g-3, row-1, -10);
			glEnd();
		}
		else if (cellActivation[i] == true)
		{
			glColor3f(0.2f, 0.3f, 1.0f);
			glBegin(GL_QUADS);
			glVertex3f(g-3, row, -10);
			glVertex3f(g-2, row, -10);
			glVertex3f(g-2, row-1, -10);
			glVertex3f(g-3, row-1, -10);
			glEnd();
		}
		if(g == 5)
		{
			row--;
			g = 0;
		}
	}
	
	glutSwapBuffers(); //Send the 3D scene to the screen
}

And it does make a “graph” but, it only generates the “graph” after I move the window. This probably (not quite sure though) has to do with redisplaying caused by “glutReshapeFunc” but I do not know exactly why. Any suggestions?