mouse motion in visual basic

#include <GL/glut.h>
#include <iostream>

using namespace std;

float winWid,winHeight;
float rx=0,ry=0,r=1,g=1,b=1;
float rotAngle =5;

void display( void )
{
    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
    glColor3f(r,g,b);
    glRectf(rx,ry,50+rx,50+ry);
    glutSwapBuffers();


}







void motion(int x, int y)
{
    rx=x;
    ry=winHeight-y;

    if(rx<300 && ry<200)
    {
        r=1;
        g=0;
        b=0;
    }

    if(rx>300 && ry>200)
    {
        r=0;
        g=1;
        b=1;
    }


    if(rx<300 && ry>200)
    {
        r=0;
        g=0;
        b=1;
    }

    if(rx>300 && ry<200)
    {
        r=1;
        g=0;
        b=1;
    }
}



void passivemotion(int x, int y)

{

    rx=x;
    ry=winHeight-y;

    if(rx<300 && ry<200)
    {
        r=1;
        g=0;
        b=0;
    }

    if(rx>300 && ry>200)
    {
        r=0;
        g=1;
        b=1;
    }


    if(rx<300 && ry>200)
    {
        r=0;
        g=0;
        b=1;
    }

    if(rx>300 && ry<200)
    {
        r=1;
        g=0;
        b=1;
    }

}

void mousebutton(int button, int state, int x, int y)
{
    if (button == GLUT_LEFT_BUTTON && state == GLUT_DOWN)

    {
        rx = x; ry = winHeight - y;

    }
}



int main(int argc, char *argv[])
{
    winWid = 600.0;
    winHeight = 400.0;

    glutInit(&argc, argv);
    glutInitDisplayMode(GLUT_RGBA | GLUT_DOUBLE);
    glutCreateWindow("Basic example");
    glutPositionWindow(200,200);
    glutReshapeWindow(winWid,winHeight);
    glutReshapeWindow(600,400);

    glClearColor(0.0,0.0,0.0,1.0);

    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();
    glOrtho(0.0,winWid,0.0,winHeight, -100.0, 100.0);

    glMatrixMode(GL_MODELVIEW);
    glLoadIdentity();
    glutDisplayFunc(display);
    glutIdleFunc(display);
    //glutMotionFunc(motion);
    //glutPassiveMotionFunc(passivemotion);
    //glutMouseFunc( mousebutton);

    glutMainLoop();

    return 0;
}