private void Dirtext_KeyPress(object sender, KeyPressEventArgs e)
 {
     m.Nada(e);
     Dirtext.ForeColor = SystemColors.WindowText;
     Dirtext.Font      = new Font(Dirtext.Font, FontStyle.Regular);
     //m.soloLetras(e);
 }
 private void txtCant_KeyPress(object sender, KeyPressEventArgs e)
 {
     vt.Nada(e);
 }
 private void txtlat_KeyPress(object sender, KeyPressEventArgs e)
 {
     mn.Nada(e);
 }