private void submenu_about_Click(object sender, EventArgs e)
{
//memanggil form about programmer
if (aboutprog == null)
{
aboutprog = new FAboutProgrammer();
aboutprog.MdiParent = this;
aboutprog.FormClosed += new FormClosedEventHandler(Proc_AboutProgrammerClosed);
aboutprog.Show();
}
else
{
aboutprog.Activate();
}
}
//Membuat prosedur event form closed
void Proc_AboutProgrammerClosed(Object sender, FormClosedEventArgs e)
{
aboutprog = null;
}