private void vwLogin_btnfechar_Click(object sender, EventArgs e)
{
Remocao(vwLogin);
vwLogin = null;
}
private void loginToolStripMenuItem_Click(object sender, EventArgs e)
{
vwLogin = new View.Login();
vwLogin.btnfechar.Click += new EventHandler(vwLogin_btnfechar_Click);
Exibicao(vwLogin);
}