// ================================================================
// 遍历某个文件夹下某种文件,
// 使用说明
//       _GetFileList(ListBox1.Items,'c:\*.doc');
//           _GetFileList(MyTStringList,'c:\*.exe');
// ================================================================
procedure TForm1._GetFileList(AStrings: TStrings ; ASourFile: string);
var sour_path,sour_file: string;
    TmpList:TStringList;
    FileRec:TSearchrec;
begin
 
   sour_path:=ExtractFilePath(ASourFile);
   sour_file:=ExtractFileName(ASourFile);
 
 if not DirectoryExists(sour_path) then
begin
     AStrings.Clear;
     exit;
end;
 
   TmpList:=TStringList.Create;
   TmpList.Clear;
 
 if FindFirst(sour_path+sour_file,faAnyfile,FileRec) = 0 then
repeat
if ((FileRec.Attr and faDirectory) = 0) then
begin
           TmpList.Add(sour_path+FileRec.Name)
end;
until FindNext(FileRec)<>0;
 
   SysUtils.FindClose(FileRec);
   AStrings.Assign(TmpList);
   TmpList.Free;end;
 
 // ================================================================
// 遍历某个文件夹及子文件夹下某种文件,
// 使用说明
//       _GetFileList(ListBox1.Items, 'c:\', '*.doc');
//           _GetFileList(MyTStringList, 'c:\', '*.exe');
// ================================================================
procedure _GetFileList(AStrings: TStrings; ASourFile,
  FileName: string);
var sour_path,sour_file: string;
    TmpList:TStringList;
    FileRec, subFileRec:TSearchrec;
    i: Integer;
begin
if rightStr(trim(ASourFile), 1) <> '\' then
     sour_path :=trim(ASourFile) + '\'
else
     sour_path :=trim(ASourFile);
   sour_file:= FileName;
 
 if not DirectoryExists(sour_path) then
begin
     AStrings.Clear;
     exit;
end;
 
   TmpList:=TStringList.Create;
   TmpList.Clear;
 
 if FindFirst(sour_path+'*.*',faAnyfile,FileRec) = 0 then
repeat
if ((FileRec.Attr and faDirectory) <> 0) then
begin
if ((FileRec.Name<> '.') and (FileRec.Name  <> '..')) then
             _GetFileList(AStrings, sour_path+ FileRec.Name + '\',  sour_file);
end
else
if FindFirst(sour_path + FileName,faAnyfile,subFileRec) = 0 then
repeat
if ((subFileRec.Attr and faDirectory) = 0) then
            TmpList.Add(sour_path+subFileRec.Name);
until FindNext(subFileRec)<>0;
 
 until FindNext(FileRec)<>0;
 
   SysUtils.FindClose(FileRec);for i := 0 to TmpList.Count -1 do
     AStrings.Add(TmpList.Strings[i]);
 
   TmpList.Free;end;