private void primkaToolStripMenuItem_Click(object sender, EventArgs e)
        {
            frmDodajPrimku primka = new frmDodajPrimku();

            primka.MdiParent = this;
            primka.Show();
        }
 private void primkaToolStripMenuItem_Click(object sender, EventArgs e)
 {
     frmDodajPrimku primka = new frmDodajPrimku();
     primka.MdiParent = this;
     primka.Show();
 }