private void circuloToolStripMenuItem_Click(object sender, EventArgs e)
{
c_circulo circulo = c_circulo.getInstancia();
frmCirculo frm_circulo = circulo.getFormulario();
frm_circulo.MdiParent = frm;
frm_circulo.Show();
}
public static c_circulo getInstancia()
{
if (instancia == null)
{
instancia = new c_circulo();
}
return(instancia);
}
private void frmCirculo_FormClosing(object sender, FormClosingEventArgs e)
{
instancia = null;
}
