private void aboutToolStripMenuItem_Click(object sender, EventArgs e)
{
AboutDialog dlg = new AboutDialog();
foreach (Form fm in Application.OpenForms)
{
if (fm.Name == "AboutDialog")
{
return;
}
}
dlg.Owner = this;
dlg.StartPosition = FormStartPosition.Manual;
dlg.SetDesktopLocation((this.DesktopLocation.X + this.Width), this.DesktopLocation.Y);
dlg.Show();
}