using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;namespace WindowsFormsApplication24
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
const short WM_CAP = 1024;
const int WM_CAP_DRIVER_CONNECT = WM_CAP + 10;
const int WM_CAP_DRIVER_DISCONNECT = WM_CAP + 11;
const int WM_CAP_EDIT_COPY = WM_CAP + 30;
const int WM_CAP_SET_PREVIEW = WM_CAP + 50;
const int WM_CAP_SET_PREVIEWRATE = WM_CAP + 52;
const int WM_CAP_SET_SCALE = WM_CAP + 53;
const int WS_CHILD = 1073741824;
const int WS_VISIBLE = 268435456;
const short SWP_NOMOVE = 2;
const short SWP_NOSIZE = 1;
const short SWP_NOZORDER = 4;
const short HWND_BOTTOM = 1;
int iDevice = 0;
int hHwnd;
[System.Runtime.InteropServices.DllImport("user32", EntryPoint = "SendMessageA")]
static extern int SendMessage(int hwnd, int wMsg, int wParam, [MarshalAs(UnmanagedType.AsAny)]
object lParam);
[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);
[System.Runtime.InteropServices.DllImport("user32")]
static extern bool DestroyWindow(int hndw);
[System.Runtime.InteropServices.DllImport("avicap32.dll")]
static extern int capCreateCaptureWindowA(string lpszWindowName, int dwStyle, int x, int y, int nWidth, short nHeight, int hWndParent, int nID);
[System.Runtime.InteropServices.DllImport("avicap32.dll")]
static extern bool capGetDriverDescriptionA(short wDriver, string lpszName, int cbName, string lpszVer, int cbVer);
private void OpenPreviewWindow()
{
int iHeight = 320;
int iWidth = 200;
//
// Open Preview window in picturebox
//
hHwnd = capCreateCaptureWindowA(iDevice.ToString(), (WS_VISIBLE | WS_CHILD), 0, 0, 640, 480, picCapture.Handle.ToInt32(), 0);
//
// Connect to device
//
if (SendMessage(hHwnd, WM_CAP_DRIVER_CONNECT, iDevice, 0) == 1)
{
//
// Set the preview scale
//
SendMessage(hHwnd, WM_CAP_SET_SCALE, 1, 0);
//
// Set the preview rate in milliseconds
//
SendMessage(hHwnd, WM_CAP_SET_PREVIEWRATE, 66, 0);
//
// Start previewing the image from the camera
//
SendMessage(hHwnd, WM_CAP_SET_PREVIEW, 1, 0);
//
// Resize window to fit in picturebox
//
SetWindowPos(hHwnd, HWND_BOTTOM, 0, 0, iWidth, iHeight, (SWP_NOMOVE | SWP_NOZORDER));
}
else
{
//
// Error connecting to device close window
//
DestroyWindow(hHwnd);
}
}
private void ClosePreviewWindow()
{
//
// Disconnect from device
//
SendMessage(hHwnd, WM_CAP_DRIVER_DISCONNECT, iDevice, 0);
//
// close window
//
DestroyWindow(hHwnd);
}
private void button1_Click(object sender, EventArgs e)
{
iDevice = int.Parse(device_number_textBox.Text);
OpenPreviewWindow();
}
}
}
picCapture为一个PictureBox
device_number_textBox.Text=0为一个TextBox,值为0
TcpClient myclient;
MemoryStream ms;
NetworkStream myns;
BinaryWriter mysw;
Thread myth;
TcpListener mytcpl;
Socket mysocket;
NetworkStream ns; private void Start_Receiving_Video_Conference()
{
try
{ // Open The Port
mytcpl = new TcpListener(5000);
mytcpl.Start(); // Start Listening on That Port
mysocket = mytcpl.AcceptSocket(); // Accept Any Request From Client and Start a Session
ns = new NetworkStream(mysocket); // Receives The Binary Data From Port picture_comming.Image = Image.FromStream(ns);
mytcpl.Stop(); // Close TCP Session if (mysocket.Connected == true) // Looping While Connected to Receive Another Message
{
while (true)
{
Start_Receiving_Video_Conference(); // Back to First Method
}
}
myns.Flush(); }
catch (Exception) { button1.Enabled = true; myth.Abort(); }
}
private void Start_Sending_Video_Conference(string remote_IP, int port_number)
{
try
{ ms = new MemoryStream();// Store it in Binary Array as Stream
IDataObject data;
Image bmap; // Copy image to clipboard
SendMessage(hHwnd, WM_CAP_EDIT_COPY, 0, 0); // Get image from clipboard and convert it to a bitmap
data = Clipboard.GetDataObject(); if (data.GetDataPresent(typeof(System.Drawing.Bitmap)))
{
bmap = ((Image)(data.GetData(typeof(System.Drawing.Bitmap))));
bmap.Save(ms, ImageFormat.Bmp);
}
picCapture.Image.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);
byte[] arrImage = ms.GetBuffer();
myclient = new TcpClient(remote_IP, port_number);//Connecting with server
myns = myclient.GetStream();
mysw = new BinaryWriter(myns);
mysw.Write(arrImage);//send the stream to above address
ms.Flush();
mysw.Flush();
myns.Flush();
ms.Close();
mysw.Close();
myns.Close();
myclient.Close();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Video Conference Error Message", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
private void btnStart_Click(object sender, System.EventArgs e)
{
iDevice = int.Parse (device_number_textBox.Text);
OpenPreviewWindow();
}
private void btnStop_Click(object sender, System.EventArgs e)
{
ClosePreviewWindow(); }
private void Form1_Closing(object sender, System.ComponentModel.CancelEventArgs e)
{
if (btnStop.Enabled)
{
ClosePreviewWindow();
} } private void button1_Click(object sender, EventArgs e)
{
button1.Enabled = false;
myth = new Thread(new System.Threading.ThreadStart(Start_Receiving_Video_Conference)); // Start Thread Session
myth.Start(); // Start Receiveing Camera
} private void timer1_Tick(object sender, EventArgs e)
{
Start_Sending_Video_Conference(IP_textBox.Text,6000);
} private void Form1_Load(object sender, EventArgs e)
{ } private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
try
{
mytcpl.Stop();
myth.Abort();
}
catch (Exception){}
} private void button2_Click(object sender, EventArgs e)
{
timer1.Enabled = true;
}
}
是这样子写滴：
命名空间"System"中不存在类型或命名空间名称"Linq"(是缺少程序集引用吗？)
可以摄头像拍指定尺寸的相片么？例如我把摄头像的影像放到一个 200*300 的picturebox，
然后加一个按钮“拍照”，
有什么办法把把这个picturebox中所显示的200*300图像保存出来？？我拍出来的，都是640*480，调不了。请指教。