using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;
using System.Drawing.Imaging;
using System.Net;
using System.Net.Sockets;
using System.Threading;
namespace camera
{
public partial class CameraForm : Form
{
private int hHwnd;
private const int port = 2000;
public CameraForm()
{
InitializeComponent();
}
public struct videohdr_tag
{
public byte[] lpData;
public int dwBufferLength;
public int dwBytesUsed;
public int dwTimeCaptured;
public int dwUser;
public int dwFlags;
public int[] dwReserved;
}
public delegate bool CallBack(int hwnd, int lParam);
/// <summary>
/// 必需的设计器变量。
/// </summary>
[DllImport("avicap32.dll", CharSet = CharSet.Ansi, SetLastError = true, ExactSpelling = true)]
public static extern int capCreateCaptureWindowA([MarshalAs(UnmanagedType.VBByRefStr)] ref string lpszWindowName, int dwStyle, int x, int y, int nWidth, short nHeight, int hWndParent, int nID);
[DllImport("avicap32.dll", CharSet = CharSet.Ansi, SetLastError = true, ExactSpelling = true)]
public static extern bool capGetDriverDescriptionA(short wDriver, [MarshalAs(UnmanagedType.VBByRefStr)] ref string lpszName, int cbName, [MarshalAs(UnmanagedType.VBByRefStr)] ref string lpszVer, int cbVer);
[DllImport("user32", CharSet = CharSet.Ansi, SetLastError = true, ExactSpelling = true)]
public static extern bool DestroyWindow(int hndw);
[DllImport("user32", EntryPoint = "SendMessageA", CharSet = CharSet.Ansi, SetLastError = true, ExactSpelling = true)]
public static extern int SendMessage(int hwnd, int wMsg, int wParam, [MarshalAs(UnmanagedType.AsAny)] object lParam);
[DllImport("user32", CharSet = CharSet.Ansi, SetLastError = true, ExactSpelling = true)]
public static extern int SetWindowPos(int hwnd, int hWndInsertAfter, int x, int y, int cx, int cy, int wFlags);
[DllImport("vfw32.dll")]
public static extern string capVideoStreamCallback(int hwnd, videohdr_tag videohdr_tag);
[DllImport("vicap32.dll", CharSet = CharSet.Ansi, SetLastError = true, ExactSpelling = true)]
public static extern bool capSetCallbackOnFrame(int hwnd, string s);
private void OpenCapture()
{
int intWidth = this.panel1.Width;
int intHeight = this.panel1.Height;
int intDevice = 0;
string refDevice = intDevice.ToString();
//创建视频窗口并得到句柄
hHwnd = CameraForm.capCreateCaptureWindowA(ref refDevice, 1342177280, 0, 0, 640, 480, this.panel1.Handle.ToInt32(), 0);
if (CameraForm.SendMessage(hHwnd, 0x40a, intDevice, 0) > 0)
{
CameraForm.SendMessage(this.hHwnd, 0x435, -1, 0);
CameraForm.SendMessage(this.hHwnd, 0x434, 0x42, 0);
CameraForm.SendMessage(this.hHwnd, 0x432, -1, 0);
CameraForm.SetWindowPos(this.hHwnd, 1, 0, 0, intWidth, intHeight, 6);
}
else
{
CameraForm.DestroyWindow(this.hHwnd);
}
}
private void button1_Click(object sender, EventArgs e)
{
this.OpenCapture();
}