private void configuraçõesToolStripMenuItem_Click(object sender, EventArgs e)
        {
            frmConfiguracao frmconfig = new frmConfiguracao();

            frmconfig.MdiParent = this;

            frmconfig.Show();
        }
        private void configuraçõesToolStripMenuItem_Click(object sender, EventArgs e)
        {
            frmConfiguracao frmconfig = new frmConfiguracao();

              frmconfig.MdiParent = this;

              frmconfig.Show();
        }