Delphi操作Wrod的几个知识点

//-------------------初始化--------------------
var
  wApp,work:Variant;
  try
   wApp:=GetActiveOleObject('word.Application');
  except
   wApp:=CreateOleObject('word.Application');
  end;
//---------------替换字符--------------------
  wApp.selection.find.text:='';
  wApp.selection.find.replacement.text:=lb;
  wApp.selection.find.execute(replace:=wdReplaceAll);
//----------------------隐藏WORD菜单和工具栏----------------------
if OC.State in [osUIActive]  then
begin
  OC.OleObjectInterface.QueryInterface(IOleInPlaceObject,IOO);
  IOO.UIDeactivate;
  IOO :=nil;
end;
//-----------------根据书签导数据------
wApp.Selection.GoTo(What:=wdGoToBookmark,Name:='ZCZD'+IntToStr(i));
  wApp.Selection.typetext('■')
//-------------------生成页眉页脚并写入数据----------
  wApp.Selection.GoTo(What:=wdGoToPage, Which:=wdGoToNext, Name:='FLAG');
  If wApp.ActiveWindow.View.SplitSpecial <> wdPaneNone Then
      wApp.ActiveWindow.Panes(2).Close;
  If (wApp.ActiveWindow.ActivePane.View.Type = wdNormalView) Or (wApp.ActiveWindow.ActivePane.View.Type = wdOutlineView) Then
      wApp.ActiveWindow.ActivePane.View.Type := wdPrintView;
  wApp.ActiveWindow.ActivePane.View.SeekView := wdSeekCurrentPageHeader;
  wApp.Selection.ParagraphFormat.Borders.item(wdBorderLeft).LineStyle := wdLineStyleNone;
  wApp.Selection.ParagraphFormat.Borders.item(wdBorderRight).LineStyle := wdLineStyleNone;
  wApp.Selection.ParagraphFormat.Borders.item(wdBorderTop).LineStyle := wdLineStyleNone;
  wApp.Selection.ParagraphFormat.Borders.item(wdBorderBottom).LineStyle := wdLineStyleNone;
  wApp.ActiveWindow.ActivePane.View.SeekView := wdSeekCurrentPageFooter;
  wApp.Selection.ParagraphFormat.Alignment := wdAlignParagraphRight;
  if (DM.XM_DS.FieldByName('tg_flag').AsInteger = 2) and (DM.XM_DS.FieldByName('tj_flag').AsInteger = 0) then
    wApp.Selection.TypeText(Text:='合`格`任`务`书')
  else
    wApp.Selection.TypeText(Text:='不合格任务书');
  wApp.ActiveWindow.ActivePane.View.SeekView := wdSeekMainDocument;