popmenu的例子

var
r_id :string;
begin
if Qry.FieldByName('code1').AsString<>'' then
begin
    if (Application.MessageBox('确认删除？', '提示', MB_YESNO+mb_iconinformation)=IDYES) then
    begin
      r_id:=Qry.fieldByName('id').AsString;
      del_ado.Connection.BeginTrans;
      try
        with del_ado do
        begin
          del_ado.Close;
          del_ado.SQL.Clear();
          del_ado.SQL.Add('delete from u_qianyue where r_id='''+r_id+'''');
          del_ado.ExecSQL;

          del_ado.SQL.Clear();
          //删除完u_qianyue表中的记录后，更新u_report表中的签约日期和过户日期为空
          del_ado.SQL.Add('update u_report set bargain_date = null,register_date = null where id='''+r_id+'''');
          del_ado.ExecSQL;
          showmessage('删除成功！');
          del_ado.Connection.CommitTrans;
          btnQueryClick(self);
        end;
      except
        on E: Exception do
        begin
        del_ado.Connection.RollbackTrans; //如有异常，事务回滚
        ShowMessage(E.Message);
        end
      end;
     { try
        del_ado.Connection.BeginTrans;//.begainTrans;   //BeginTransComplete
        //on Error Goto ErrNum
        del_ado.Close;
        del_ado.SQL.Clear();
        del_ado.SQL.Add('delete from u_qianyue where r_id='''+r_id+'''');
        del_ado.ExecSQL;

        del_ado.SQL.Clear();
        //删除完u_qianyue表中的记录后，更新u_report表中的签约日期和过户日期为空
        del_ado.SQL.Add('update u_report set bargain_date = null,register_date = null where id='''+r_id+'''');
        del_ado.ExecSQL;
        showmessage('删除成功！');
        del_ado.Connection.CommitTrans;
        btnQueryClick(self);
      except
        del_ado.Connection.RollBackTrans;
      end; }
    end;
end;
end;