private void clientesToolStripMenuItem_Click(object sender, EventArgs e)
{
FrmCliente frm = new FrmCliente();
frm.MdiParent = this;
frm.Show();
}
private void radMenuItem2_Click(object sender, EventArgs e)
{
FrmCliente frmCliente = formOpener.ShowModelessForm <FrmCliente>() as FrmCliente;
frmCliente.MdiParent = this;
frmCliente.Show();
}