private void sairToolStripMenuItem_Click(object sender, EventArgs e)
{
FrmAviao aviao = FrmAviao.getInstance();
aviao.MdiParent = this;
aviao.Show();
}
public static FrmAviao getInstance()
{
if (instance == null)
{
instance = new FrmAviao();
}
return instance;
}
public static FrmAviao getInstance()
{
if (instance == null)
{
instance = new FrmAviao();
}
return(instance);
}
private void FrmAviao_FormClosed(object sender, FormClosedEventArgs e)
{
instance = null;
}
private void FrmAviao_FormClosed(object sender, FormClosedEventArgs e)
{
instance = null;
}