unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls, ExtCtrls;
type
TForm1 = class(TForm)
Button1: TButton;
procedure Button1Click(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;
var
Form1: TForm1;
implementation
{$R *.dfm}
type ThIconArray = array[0..0] of hIcon;
type PhIconArray = ^ThIconArray;
function ExtractIconExA(lpszFile: PAnsiChar;
nIconIndex: Integer;
phiconLarge : PhIconArray;
phiconSmall: PhIconArray;
nIcons: UINT): UINT; stdcall;
external 'shell32.dll' name 'ExtractIconExA';
function ExtractIconExW(lpszFile: PWideChar;
nIconIndex: Integer;
phiconLarge: PhIconArray;
phiconSmall: PhIconArray;
nIcons: UINT): UINT; stdcall;
external 'shell32.dll' name 'ExtractIconExW';
function ExtractIconEx(lpszFile: PAnsiChar;
nIconIndex: Integer;
phiconLarge : PhIconArray;
phiconSmall: PhIconArray;
nIcons: UINT): UINT; stdcall;
external 'shell32.dll' name 'ExtractIconExA';
procedure TForm1.Button1Click(Sender: TObject);
var
NumIcons : integer;
pTheLargeIcons : phIconArray;
pTheSmallIcons : phIconArray;
LargeIconWidth : integer;
SmallIconWidth : integer;
SmallIconHeight : integer;
i : integer;
TheIcon : TIcon;
TheBitmap : TBitmap;
begin
NumIcons :=
ExtractIconEx('c:\windows\system32\shell32.dll',
-1,
nil,
nil,
0);
if NumIcons > 0 then begin
LargeIconWidth := GetSystemMetrics(SM_CXICON);
SmallIconWidth := GetSystemMetrics(SM_CXSMICON);
SmallIconHeight := GetSystemMetrics(SM_CYSMICON);
GetMem(pTheLargeIcons, NumIcons * sizeof(hIcon));
GetMem(pTheSmallIcons, NumIcons * sizeof(hIcon));
FillChar(pTheLargeIcons^, NumIcons * sizeof(hIcon), #0);
FillChar(pTheSmallIcons^, NumIcons * sizeof(hIcon), #0);
ExtractIconEx('c:\windows\system32\shell32.dll',
2,
pTheLargeIcons,
pTheSmallIcons,
numIcons);
{$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;
end.