Fensterposition anhand von Handle ändern.

[neolithos]

Zitat von DelphiSource:

Delphi-Quellcode:

function SelectDirectory(const Caption: string; const Root: WideString;
  var Directory: string): Boolean;
var
  WindowList: Pointer;
  BrowseInfo: TBrowseInfo;
  Buffer: PChar;
  OldErrorMode: Cardinal;
  RootItemIDList, ItemIDList: PItemIDList;
  ShellMalloc: IMalloc;
  IDesktopFolder: IShellFolder;
  Eaten, Flags: LongWord;
begin
  Result := False;
  if not DirectoryExists(Directory) then
    Directory := '';
  FillChar(BrowseInfo, SizeOf(BrowseInfo), 0);
  if (ShGetMalloc(ShellMalloc) = S_OK) and (ShellMalloc <> nil) then
  begin
    Buffer := ShellMalloc.Alloc(MAX_PATH);
    try
      RootItemIDList := nil;
      if Root <> '' then
      begin
        SHGetDesktopFolder(IDesktopFolder);
        IDesktopFolder.ParseDisplayName(Application.Handle, nil,
          POleStr(Root), Eaten, RootItemIDList, Flags);
      end;
      with BrowseInfo do
      begin
        hwndOwner := Application.Handle;
        pidlRoot := RootItemIDList;
        pszDisplayName := Buffer;
        lpszTitle := PChar(Caption);
        ulFlags := BIF_RETURNONLYFSDIRS;
        if Directory <> '' then
        begin
          lpfn := SelectDirCB;
          lParam := Integer(PChar(Directory));
        end;
      end;
      WindowList := DisableTaskWindows(0);
      OldErrorMode := SetErrorMode(SEM_FAILCRITICALERRORS);
      try
        ItemIDList := ShBrowseForFolder(BrowseInfo);
      finally
        SetErrorMode(OldErrorMode);
        EnableTaskWindows(WindowList);
      end;
      Result :=  ItemIDList <> nil;
      if Result then
      begin
        ShGetPathFromIDList(ItemIDList, Buffer);
        ShellMalloc.Free(ItemIDList);
        Directory := Buffer;
      end;
    finally
      ShellMalloc.Free(Buffer);
    end;
  end;
end;

BrowserInfo.lpfn

Zitat von MSDN:

Address of an application-defined function that the dialog box calls when an event occurs. For more information, see the BrowseCallbackProc function. This member can be NULL.