Try this,
i have updated code :-
PictureBox objPct = new PictureBox();
private void Form9_Load(object sender, EventArgs e)
{
objPct.Visible = false;
this.Controls.Add(objPct);
}
private void Form9_MouseLeave(object sender, EventArgs e)
{
objPct.Visible = false;
}
private void Form9_MouseMove(object sender, MouseEventArgs e)
{
Bitmap bmp = new Bitmap(250, 200);
Graphics g = this.CreateGraphics();
g = Graphics.FromImage(bmp);
g.CopyFromScreen(MousePosition.X+10, MousePosition.Y - 10, 0, 0, new Size(300, 300));
objPct.Image = bmp;
objPct.Location = new Point(Cursor.Position.X - this.Left, Cursor.Position.Y - this.Top - 50);
objPct.Visible = true;
}