通过摄像头在一个panel里面显示视频，通过按钮截取点击时刻的图片在DBimage里面显示！ ( 积分: 200 )

通过摄像头在一个panel里面显示视频，通过一个botton截取点击时刻的图片在DBimage里面显示！
用delphi怎么实现，大富翁的高手帮帮忙啊！！

通过摄像头在一个panel里面显示视频，通过一个botton截取点击时刻的图片在DBimage里面显示！
用delphi怎么实现，大富翁的高手帮帮忙啊！！

unit Unit1;

interface

uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, ExtCtrls, StdCtrls;

type
TForm1 = class(TForm)
Panel1: TPanel;
Button1: TButton;
Button2: TButton;
Image1: TImage;
procedure Button1Click(Sender: TObject);
procedure Button2Click(Sender: TObject);
private
hWndC : THandle;
{ Private declarations }
public
{ Public declarations }
end;

var
Form1: TForm1;

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;
const WM_CAP_SEQUENCE_NOFILE =WM_CAP_START+ 63 ;
const WM_CAP_SET_OVERLAY =WM_CAP_START+ 51 ;
const WM_CAP_SET_PREVIEW =WM_CAP_START+ 50 ;
const WM_CAP_SET_CALLBACK_VIDEOSTREAM = WM_CAP_START +6;
const WM_CAP_SET_CALLBACK_ERROR=WM_CAP_START +2;
const WM_CAP_SET_CALLBACK_STATUSA= WM_CAP_START +3;
const WM_CAP_SET_CALLBACK_FRAME= WM_CAP_START +5;
const WM_CAP_SET_SCALE=WM_CAP_START+ 53 ;
const WM_CAP_SET_PREVIEWRATE=WM_CAP_START+ 52 ;

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


implementation

{$R *.dfm}

procedure TForm1.Button1Click(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);

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
begin
SendMessage(hWndC, WM_CAP_SET_CALLBACK_VIDEOSTREAM, 0, 0);
SendMessage(hWndC, WM_CAP_SET_CALLBACK_ERROR, 0, 0);
SendMessage(hWndC, WM_CAP_SET_CALLBACK_STATUSA, 0, 0);
SendMessage(hWndC, WM_CAP_DRIVER_CONNECT, 0, 0);
SendMessage(hWndC, WM_CAP_SET_SCALE, 1, 0);
SendMessage(hWndC, WM_CAP_SET_PREVIEWRATE, 66, 0);
SendMessage(hWndC, WM_CAP_SET_OVERLAY, 1, 0);
SendMessage(hWndC, WM_CAP_SET_PREVIEW, 1, 0);
end;

end;

procedure TForm1.Button2Click(Sender: TObject);
begin
if hWndC <> 0 then
begin
SendMessage(hWndC,WM_CAP_SAVEDIB,0,longint(pchar('c://test.bmp')));
end;
image1.Picture.LoadFromFile('c:/test.bmp');
end;

end.
在XPsp1+D6测试通过

之后你在载入DBimage就可以了

楼上的兄弟：
如果我用程序来控制扫描仪使得：用一个按钮连接上扫描仪，另一个按钮把扫描的东西在imgEdit上面显示，程序怎么实现？（用kodak）

哦,太强了,
能不能细说一下程序中的那先消息?

如果你的摄像头是图像处理用的CCD,我可以给出解决程序

上面的问题我自己已经解决，谢谢大家的关注！