چگونگی دسترسی به webcam

[ppp1486]

درود به شما دوستان چطور می شه با کدنویسی به webcam کامپیوتر دسترسی داشت ؟؟؟؟

[aradrobo]

درود به شما دوستان چطور می شه با کدنویسی به webcam کامپیوتر دسترسی داشت ؟؟؟؟

فقط به یک پیکچر باکس نیاز داری . بعد توی سورس مقادیر زیر را وارد کن :
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;

namespace WebCam
{
public partial class Form1 : Form
{
private int hWnd;

const int WM_CAP_START = 1024;
const int WS_CHILD = 1073741824;
const int WS_VISIBLE = 268435456;
const int WM_CAP_DRIVER_CONNECT = (WM_CAP_START + 10);
const int WM_CAP_DRIVER_DISCONNECT = (WM_CAP_START + 11);
const int WM_CAP_EDIT_COPY = (WM_CAP_START + 30);
const int WM_CAP_SEQUENCE = (WM_CAP_START + 62);
const int WM_CAP_FILE_SAVEAS = (WM_CAP_START + 23);
const int WM_CAP_SET_SCALE = (WM_CAP_START + 53);
const int WM_CAP_SET_PREVIEWRATE = (WM_CAP_START + 52);
const int WM_CAP_SET_PREVIEW = (WM_CAP_START + 50);
const int SWP_NOMOVE = 2;
const int SWP_NOSIZE = 1;
const int SWP_NOZORDER = 4;
const int HWND_BOTTOM = 1;


//---The capGetDriverDescription function retrieves the
// version description of the capture driver---
[System.Runtime.InteropServices.DllImport("avicap32.dll")]
static extern bool capGetDriverDescriptionA(
short wDriverIndex, string lpszName,
int cbName, string lpszVer, int cbVer);

//---The capCreateCaptureWindow function creates a capture
// window---
[System.Runtime.InteropServices.DllImport("avicap32.dll")]
static extern int capCreateCaptureWindowA(
string lpszWindowName, int dwStyle, int x, int y,
int nWidth, short nHeight, int hWnd, int nID);

//---This function sends the specified message to a window or
// windows---
[System.Runtime.InteropServices.DllImport(
"user32", EntryPoint = "SendMessageA")]
static extern int SendMessage(
int hwnd, int Msg, int wParam,
[MarshalAs(UnmanagedType.AsAny)] object lParam);

//---Sets the position of the window relative to the screen
// buffer---
[System.Runtime.InteropServices.DllImport(
"user32", EntryPoint = "SetWindowPos")]
static extern int SetWindowPos(
int hwnd, int hWndInsertAfter, int x, int y,
int cx, int cy, int wFlags);

//--This function destroys the specified window--
[System.Runtime.InteropServices.DllImport("user32")]
static extern bool DestroyWindow(int hndw);

public Form1()
{
InitializeComponent();
}

private void PreviewVideo(PictureBox pbCtrl)
{
hWnd = capCreateCaptureWindowA("0", WS_VISIBLE | WS_CHILD, 0, 0, 0, 0, pbCtrl.Handle.ToInt32(), 0);
if (SendMessage(hWnd, WM_CAP_DRIVER_CONNECT, 0, 0) != 0)
{
SendMessage(hWnd, WM_CAP_SET_SCALE, 1, 0);
SendMessage(hWnd, WM_CAP_SET_PREVIEWRATE, 30, 0);
SendMessage(hWnd, WM_CAP_SET_PREVIEW, 1, 0);
SetWindowPos(hWnd, HWND_BOTTOM, 0, 0, pbCtrl.Width, pbCtrl.Height, SWP_NOMOVE | SWP_NOZORDER);
}
else
{
DestroyWindow(hWnd);
}
}

private void Form1_Load(object sender, EventArgs e)
{
PreviewVideo(picFrame);
}
}
}

[aradrobo]

picFrame اسم پیکچر باکس من هستش.

[intel_amd]

یکم قشنگ تر با توابع فریم ورک دات نت نمیشه نوشت؟

[_behnam_]

سلام دوست عزیز
یک مثال اینجا (http://www.codeproject.com/Articles/202464/How-to-use-a-WebCam-in-C-with-the-NET-Framework-4)هست.