Help~!

Question

我要时时检测指定文件夹下是否有文件，该怎么做？
给个函数谢谢

Answer 1

用timer或开个线程循环检查嘛

Answer 2

timer if FileExists(文件名) then　　//存在

Answer 3

你用一个线程，然后再用循环
var
  SearchRec : TSearchRec;
  ItemTemp : TTreeNode;
begin
  with ATreeView.Items do
  try
    BeginUpdate;
    if ADirectory[Length(ADirectory)] <> '\' then
      ADirectory := ADirectory +'\';
    if FindFirst(ADirectory + '*.*', faDirectory, SearchRec) = 0 then
    begin
      repeat
      if (SearchRec.Attr and faDirectory = faDirectory) and (SearchRec.Name[1] <> '.') then
      begin
        if (SearchRec.Attr and faDirectory > 0) then
          ARoot := AddChild(ARoot, SearchRec.Name);
        ItemTemp := ARoot.Parent;
        DirToTreeView(ATreeView, ADirectory + SearchRec.Name, ARoot, AIncludeFiles);
        ARoot := ItemTemp;
      end
      else if AIncludeFiles then
        if SearchRec.Name[1] <> '.' then
          AddChild(ARoot, SearchRec.Name);
      until FindNext(SearchRec) <> 0;
      FindClose(SearchRec);
    end;
  finally
    EndUpdate;
  end;
end;