Ein einzelnes Bild von der Webcam lokal als jpg speichern

[NicNacMan]

Ich hab leider nur was _mit_ Zwischenablage

Delphi-Quellcode:

uses
  Vfw;

function capCreateCaptureWindow(lpszWindowName: LPCSTR; dwStyle: DWORD; x, y, nWidth, nHeight: integer; hwndParent: HWND; nID: integer): HWND; stdcall; external 'AVICAP32.DLL' name 'capCreateCaptureWindowA';

procedure TForm1.FormCreate(Sender: TObject);
const
  WM_CAP_DRIVER_CONNECT  = WM_USER + 10;
  WM_CAP_SET_PREVIEW     = WM_USER + 50;
  WM_CAP_SET_OVERLAY     = WM_USER + 51;
  WM_CAP_SET_PREVIEWRATE = WM_USER + 52;
begin
  myhandle := capCreateCaptureWindow('Video', WS_CHILD + WS_VISIBLE, 0, 0, 640, 480, Panel1.Handle, 1);
  SendMessage(myhandle, WM_CAP_DRIVER_CONNECT, 0, 0);
  SendMessage(myhandle, WM_CAP_SET_PREVIEWRATE, 500, 0);
  sendMessage(myhandle, WM_CAP_SET_OVERLAY, 1, 0);
  SendMessage(myhandle, WM_CAP_SET_PREVIEW, 1, 0);
end;

procedure TForm1.Timer1Timer(Sender: TObject);
var
  img: TPicture;
const
  WM_CAP_GRAB_FRAME_NOSTOP = WM_USER + 61;
  WM_CAP_EDIT_COPY         = WM_USER + 30;
begin
  SendMessage(myhandle, WM_CAP_GRAB_FRAME_NOSTOP, 1, 0);
  SendMessage(myhandle, WM_CAP_EDIT_COPY, 1, 0);
  img := TPicture.Create;
  try
    img.LoadFromClipboardFormat(cf_Bitmap, ClipBoard.GetAsHandle(cf_Bitmap), 0);
    [...]
  finally
    img.Free;
  end;
end;