Klasse für FindFirstFile/FindNextFile

[Luckie]

Da es immer wieder gefragt wird und ich es jetzt auch mal wieder gebraucht habe, habe ich die API-Funktionen zum Durchsuchen von Verzeichnisses mal in eine kleine Klasse gepackt:

Delphi-Quellcode:

// FindFiles - Klasse zum Durchsuchen von Ordnern
// Michael Puff [[url]http://www.michael-puff.de][/url]

unit FindFilesCls;

interface

uses
  Windows;

type
  TOnFindFile = procedure(Filename: string) of object;
  TOnDirectoryFind = procedure(Directory: string) of object;
  TFindFiles = class(TObject)
  private
    FSubfolders: Boolean;
    FMask: string;
    FOnFindFile: TOnFindFile;
    FOnFindDirectory: TOnDirectoryFind;
  public
    constructor Create;
    procedure Find(RootFolder: string);
    property SubFolders: Boolean read FSubFolders write FSubFolders;
    property Mask: string read FMask write FMask;
    property OnFileFind: TOnFindFile read FOnFindFile write FOnFindFile;
    property OnDirectoryFind: TOnDirectoryFind read FOnFindDirectory write FOnFindDirectory;
  end;

implementation

{ TFindFiles }

constructor TFindFiles.Create;
begin
  inherited;
  FSubfolders := False;
  FMask := '*.*';
end;

procedure TFindFiles.Find(RootFolder: string);
var
  wfd: TWin32FindData;
  hFile: THandle;
begin
  if RootFolder[Length(RootFolder)] <> '\' then
    RootFolder := RootFolder + '\';
  if Self.SubFolders then
  begin
    hFile := FindFirstFile(PChar(RootFolder + '*.*'), wfd);
    if hFile <> INVALID_HANDLE_VALUE then
    try
      repeat
        if wfd.dwFileAttributes and FILE_ATTRIBUTE_DIRECTORY =
          FILE_ATTRIBUTE_DIRECTORY then
          if (string(wfd.cFileName) <> '.') and (string(wfd.cFileName) <> '..') then
          begin
            if Assigned(OnDirectoryFind) then
              OnDirectoryFind(RootFolder + wfd.cFileName);
            Find(RootFolder + wfd.cFileName);
          end;
      until FindNextFile(hFile, wfd) = False;
    finally
      windows.FindClose(hFile);
    end;
  end;
  hFile := FindFirstFile(PChar(RootFolder + Self.Mask), wfd);
  if hFile <> INVALID_HANDLE_VALUE then
  try
    repeat
      if wfd.dwFileAttributes and FILE_ATTRIBUTE_DIRECTORY <>
        FILE_ATTRIBUTE_DIRECTORY then
      begin
        if Assigned(OnFileFind) then
          OnFileFind(RootFolder + wfd.cFileName);
      end;
    until FindNextFile(hFile, wfd) = False;
  finally
    Windows.FindClose(hFile);
  end;
end;

end.

Delphi-Quellcode:

procedure TForm9.Button1Click(Sender: TObject);
var
  FindFiles: TFindFiles;
begin
  FindFiles := TFindFiles.Create;
  try
    FindFiles.SubFolders := True;
    FindFiles.Mask := '*.dpr';
    FindFiles.OnFileFind := OnFindFile;
    FindFiles.OnDirectoryFind := OnFindDirecetory;
    FindFiles.Find(Edit1.Text);
  finally
    FindFiles.Free;
  end;
end;

procedure TForm9.OnFindDirecetory(Directory: string);
begin
  Memo1.Lines.Add(Directory);
  Application.ProcessMessages;
end;

procedure TForm9.OnFindFile(Filename: string);
begin
  Memo1.Lines.Add(Filename);
  Application.ProcessMessages;
end;

@CodeLib Manager: Eventuell kann man das an den von mir schon vorhandenen Beitrag anhängen.