[carmelina]

El codigo es:

Código Delphi [-]
unit Unit1;
interface
uses
  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
  StdCtrls, ExtCtrls;
type
  TForm1 = class(TForm)
    Panel1: TPanel;
    Button1: TButton;
    Button2: TButton;
    Button3: TButton;
    Button4: TButton;
    Button5: TButton;
    Button6: TButton;
    SaveDialog1: TSaveDialog;

    procedure FormCreate(Sender: TObject);
    procedure OpenVideoClick(Sender: TObject);
    procedure CloseVideoClick(Sender: TObject);
    procedure GrabFrameClick(Sender: TObject);
    procedure SaveBMPClick(Sender: TObject);
    procedure StartAVIClick(Sender: TObject);
    procedure StopAVIClick(Sender: TObject);
  private
    { Private declarations }
    hWndC : THandle;
    CapturingAVI : bool;
  public
    { Public declarations }
  end;
var
  Form1: TForm1;
implementation
{$R *.DFM}
const WM_CAP_START = WM_USER;
const WM_CAP_STOP = WM_CAP_START + 68;
const WM_CAP_DRIVER_CONNECT = WM_CAP_START + 10;
const WM_CAP_DRIVER_DISCONNECT = WM_CAP_START + 11;
const WM_CAP_SAVEDIB = WM_CAP_START + 25;
const WM_CAP_GRAB_FRAME = WM_CAP_START + 60;
const WM_CAP_SEQUENCE = WM_CAP_START + 62;
const WM_CAP_FILE_SET_CAPTURE_FILEA = WM_CAP_START + 20;
 
procedure TForm1.FormCreate(Sender: TObject);
begin
 CapturingAVI := false;
  hWndC := 0;
  SaveDialog1.Options :=[ofHideReadOnly, ofNoChangeDir, ofPathMustExist]
end;

function capCreateCaptureWindowA(lpszWindowName : PCHAR;
  dwStyle : longint;
  x : integer;
  y : integer;
  nWidth : integer;
  nHeight : integer;
  ParentWin : HWND;
  nId : integer): HWND;
  STDCALL EXTERNAL 'AVICAP32.DLL';

procedure TForm1.OpenVideoClick(Sender: TObject);
begin
  hWndC := capCreateCaptureWindowA('My Own Capture Window',
  WS_CHILD or WS_VISIBLE ,
  Panel1.Left,
  Panel1.Top,
  Panel1.Width,
  Panel1.Height,
  Form1.Handle,
  0);
  if hWndC <> 0 then
  SendMessage(hWndC, WM_CAP_DRIVER_CONNECT, 0, 0);
end;

procedure TForm1.CloseVideoClick(Sender: TObject);
begin
  if hWndC <> 0 then begin
  SendMessage(hWndC, WM_CAP_DRIVER_DISCONNECT, 0, 0);
  hWndC := 0;
  end;
end;
procedure TForm1.GrabFrameClick(Sender: TObject);
begin
  if hWndC <> 0 then
  SendMessage(hWndC, WM_CAP_GRAB_FRAME, 0, 0);
end;
procedure TForm1.SaveBMPClick(Sender: TObject);
begin
  if hWndC <> 0 then begin
  SaveDialog1.DefaultExt := 'bmp';
  SaveDialog1.Filter := 'Bitmap files (*.bmp)|*.bmp';
  if SaveDialog1.Execute then
  SendMessage(hWndC,
  WM_CAP_SAVEDIB,
  0,
  longint(pchar(SaveDialog1.FileName)));
  end;
end;
procedure TForm1.StartAVIClick(Sender: TObject);
begin
  if hWndC <> 0 then begin
  SaveDialog1.DefaultExt := 'avi';
  SaveDialog1.Filter := 'AVI files (*.avi)|*.avi';
  if SaveDialog1.Execute then begin
  CapturingAVI := true;
  SendMessage(hWndC,
  WM_CAP_FILE_SET_CAPTURE_FILEA,
  0,
  Longint(pchar(SaveDialog1.FileName)));
  SendMessage(hWndC, WM_CAP_SEQUENCE, 0, 0);
  end;
end;
end;
procedure TForm1.StopAVIClick(Sender: TObject);
begin
  if hWndC <> 0 then begin
  SendMessage(hWndC, WM_CAP_STOP, 0, 0);
  CapturingAVI := false;
  end;
end;
 
end.