private void format_controls()
{
//FormatControl.SetVisibleSimpleButton(this);
this.m_grv_tham_so.PopupMenuShowing += new DevExpress.XtraGrid.Views.Grid.PopupMenuShowingEventHandler(WinFormControls.m_grv_PopupMenuShowing);
this.m_grv_tham_so.OptionsPrint.AutoWidth = false;
set_define_events();
this.KeyPreview = true;
}