DELPHI/Часто задаваемые вопросы и ответы на них/Графика

Получение иконки из ICO, EXE, DLL 2

Сначала в разделе interface пишем такой код:

type ThIconArray = array[0..0] of hIcon;
type PhIconArray = ^ThIconArray;

function ExtractIconExA(lpszFile: PAnsiChar;
  nIconIndex: Integer;
  phiconLarge : PhIconArray;
  phiconSmall: PhIconArray;
  nIcons: UINT): UINT; stdcall;
  external 'shell32.dll' name 'ExtractIconExA';

function ExtractIconExW(lpszFile: PWideChar;
  nIconIndex: Integer;
  phiconLarge: PhIconArray;
  phiconSmall: PhIconArray;
  nIcons: UINT): UINT; stdcall;
  external 'shell32.dll' name 'ExtractIconExW';

function ExtractIconEx(lpszFile: PAnsiChar;
  nIconIndex: Integer;
  phiconLarge : PhIconArray;
  phiconSmall: PhIconArray;
  nIcons: UINT): UINT; stdcall;
  external 'shell32.dll' name 'ExtractIconExA';

Затем по нажатию на кнопку:

procedure TForm1.Button1Click(Sender: TObject);
var
  NumIcons: integer;
  pTheLargeIcons: phIconArray;
  pTheSmallIcons: phIconArray;
  LargeIconWidth: integer;
  SmallIconWidth: integer;
  SmallIconHeight: integer;
  i: integer;
  TheIcon: TIcon;
  TheBitmap: TBitmap;
begin
  NumIcons :=
  ExtractIconEx('C:\Program Files\Borland\Delphi 3\BIN\delphi32.exe',
    -1, nil, nil, 0);
  if NumIcons > 0 then
  begin
    LargeIconWidth := GetSystemMetrics(SM_CXICON);
    SmallIconWidth := GetSystemMetrics(SM_CXSMICON);
    SmallIconHeight := GetSystemMetrics(SM_CYSMICON);
    GetMem(pTheLargeIcons, NumIcons * sizeof(hIcon));
    GetMem(pTheSmallIcons, NumIcons * sizeof(hIcon));
    FillChar(pTheLargeIcons^, NumIcons * sizeof(hIcon), #0);
    FillChar(pTheSmallIcons^, NumIcons * sizeof(hIcon), #0);
    ExtractIconEx('C:\Program Files\Borland\Delphi 3\BIN\delphi32.exe',
      0, pTheLargeIcons, pTheSmallIcons, numIcons);
    {$IFOPT R+}
    {$DEFINE CKRANGE}
    {$R-}
    {$ENDIF}
    for i := 0 to (NumIcons - 1) do
    begin
      DrawIcon(Form1.Canvas.Handle, i * LargeIconWidth, 0, pTheLargeIcons^[i]);
      TheIcon := TIcon. Create;
      TheBitmap := TBitmap.Create;
      TheIcon.Handle := pTheSmallIcons^[i];
      TheBitmap.Width := TheIcon.Width;
      TheBitmap.Height := TheIcon.Height;
      TheBitmap.Canvas.Draw(0, 0, TheIcon);
      TheIcon.Free;
      Form1.Canvas.StretchDraw(Rect(i * SmallIconWidth,
        100, (i + 1) * SmallIconWidth, 100 + SmallIconHeight), TheBitmap);
      TheBitmap.Free;
    end;
    {$IFDEF CKRANGE}
    {$UNDEF CKRANGE}
    {$R+}
    {$ENDIF}
    FreeMem(pTheLargeIcons, NumIcons * sizeof(hIcon));
    FreeMem(pTheSmallIcons, NumIcons * sizeof(hIcon));
  end;
end;

Источник получения информации: http://www.delphiworld.narod.ru