private void UreadManageMenuItem_Click(object sender, EventArgs e)
{
UreadManageMenuItem.Checked = ((ToolStripMenuItem)sender).Checked;
this.UnreadMngTbMenuItem.Checked = UreadManageMenuItem.Checked;
if (string.IsNullOrEmpty(_rclickTabName)) return;
ChangeTabUnreadManage(_rclickTabName, UreadManageMenuItem.Checked);
SaveConfigsTabs();
}