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; }