Programous said:Hi. The fallowing is a C# file that will do it, iv reused this code a bunch of times over and I cant remember who the original author was.
[code language='C#']
using System;
using System.Collections;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Windows.Forms;
using System.Runtime.InteropServices;namespace WebCam_Capture
{
/// <summary>
/// Summary description for UserControl1.
/// </summary>
[System.Drawing.ToolboxBitmap(typeof(WebCamCapture), "CAMERA.ICO")] // toolbox bitmap
[Designer("Sytem.Windows.Forms.Design.ParentControlDesigner,System.Design", typeof(System.ComponentModel.Design.IDesigner))] // make composite
public class WebCamCapture : System.Windows.Forms.UserControl
{
private System.ComponentModel.IContainer components;
private System.Windows.Forms.Timer timer1;// property variables
private int m_TimeToCapture_milliseconds = 100;
private int m_Width = 320;
private int m_Height = 240;
private int mCapHwnd;
private ulong m_FrameNumber = 0;// global variables to make the video capture go faster
private WebCam_Capture.WebcamEventArgs x = new WebCam_Capture.WebcamEventArgs();
private IDataObject tempObj;
private System.Drawing.Image tempImg;
private bool bStopped = true;// event delegate
public delegate void WebCamEventHandler (object source, WebCam_Capture.WebcamEventArgs e);
// fired when a new image is captured
public event WebCamEventHandler ImageCaptured;#region API Declarations
[DllImport("user32", EntryPoint="SendMessage")]
public static extern int SendMessage(int hWnd, uint Msg, int wParam, int lParam);[DllImport("avicap32.dll", EntryPoint="capCreateCaptureWindowA")]
public static extern int capCreateCaptureWindowA(string lpszWindowName, int dwStyle, int X, int Y, int nWidth, int nHeight, int hwndParent, int nID);[DllImport("user32", EntryPoint="OpenClipboard")]
public static extern int OpenClipboard(int hWnd);[DllImport("user32", EntryPoint="EmptyClipboard")]
public static extern int EmptyClipboard();[DllImport("user32", EntryPoint="CloseClipboard")]
public static extern int CloseClipboard();#endregion
#region API Constants
public const int WM_USER = 1024;
public const int WM_CAP_CONNECT = 1034;
public const int WM_CAP_DISCONNECT = 1035;
public const int WM_CAP_GET_FRAME = 1084;
public const int WM_CAP_COPY = 1054;public const int WM_CAP_START = WM_USER;
public const int WM_CAP_DLG_VIDEOFORMAT = WM_CAP_START + 41;
public const int WM_CAP_DLG_VIDEOSOURCE = WM_CAP_START + 42;
public const int WM_CAP_DLG_VIDEODISPLAY = WM_CAP_START + 43;
public const int WM_CAP_GET_VIDEOFORMAT = WM_CAP_START + 44;
public const int WM_CAP_SET_VIDEOFORMAT = WM_CAP_START + 45;
public const int WM_CAP_DLG_VIDEOCOMPRESSION = WM_CAP_START + 46;
public const int WM_CAP_SET_PREVIEW = WM_CAP_START + 50;#endregion
#region NOTES
/*
* If you want to allow the user to change the display size and
* color format of the video capture, call:
* SendMessage (mCapHwnd, WM_CAP_DLG_VIDEOFORMAT, 0, 0);
* You will need to requery the capture device to get the new settings
*/#endregion
public WebCamCapture()
{
// This call is required by the Windows.Forms Form Designer.
InitializeComponent();
}/// <summary>
/// Override the class's finalize method, so we can stop
/// the video capture on exit
/// </summary>
~WebCamCapture()
{
this.Stop();
}/// <summary>
/// Clean up any resources being used.
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{if( components != null )
components.Dispose();
}
base.Dispose( disposing );
}#region Component Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
this.components = new System.ComponentModel.Container();
this.timer1 = new System.Windows.Forms.Timer(this.components);
//
// timer1
//
this.timer1.Tick += new System.EventHandler(this.timer1_Tick);
//
// WebCamCapture
//
this.Name = "WebCamCapture";
this.Size = new System.Drawing.Size(342, 252);
this.Load += new System.EventHandler(this.WebCamCapture_Load);}
#endregion#region Control Properties
/// <summary>
/// The time intervale between frame captures
/// </summary>
public int TimeToCapture_milliseconds
{
get
{ return m_TimeToCapture_milliseconds; }set
{ m_TimeToCapture_milliseconds = value; }
}/// <summary>
/// The height of the video capture image
/// </summary>
public int CaptureHeight
{
get
{ return m_Height; }
set
{ m_Height = value; }
}/// <summary>
/// The width of the video capture image
/// </summary>
public int CaptureWidth
{
get
{ return m_Width; }set
{ m_Width = value; }
}/// <summary>
/// The sequence number to start at for the frame number. OPTIONAL
/// </summary>
public ulong FrameNumber
{
get
{ return m_FrameNumber; }set
{ m_FrameNumber = value; }
}#endregion
#region Start and Stop Capture Functions
/// <summary>
/// Starts the video capture
/// </summary>
/// <param name="FrameNumber">the frame number to start at.
/// Set to 0 to let the control allocate the frame number</param>
public void Start(ulong FrameNum)
{
try
{
// for safety, call stop, just in case we are already running
this.Stop();// setup a capture window
mCapHwnd = capCreateCaptureWindowA("WebCap", 0, 0, 0, m_Width, m_Height, this.Handle.ToInt32(), 0);// connect to the capture device
Application.DoEvents();
SendMessage(mCapHwnd, WM_CAP_CONNECT, 0, 0);
SendMessage(mCapHwnd, WM_CAP_SET_PREVIEW, 0, 0);// set the frame number
m_FrameNumber = FrameNum;// set the timer information
this.timer1.Interval = m_TimeToCapture_milliseconds;
bStopped = false;
this.timer1.Start();
}catch (Exception excep)
{
MessageBox.Show("An error ocurred while starting the video capture. Check that your webcamera is connected properly and turned on.\r\n\n" + excep.Message);
this.Stop();
}
}/// <summary>
/// Stops the video capture
/// </summary>
public void Stop()
{
try
{
// stop the timer
bStopped = true;
this.timer1.Stop();// disconnect from the video source
Application.DoEvents();
SendMessage(mCapHwnd, WM_CAP_DISCONNECT, 0, 0);
}catch (Exception excep)
{ // don't raise an error here.
}}
#endregion
#region Video Capture Code
/// <summary>
/// Capture the next frame from the video feed
/// </summary>
private void timer1_Tick(object sender, System.EventArgs e)
{
try
{
// pause the timer
this.timer1.Stop();// get the next frame;
SendMessage(mCapHwnd, WM_CAP_GET_FRAME, 0, 0);// copy the frame to the clipboard
SendMessage(mCapHwnd, WM_CAP_COPY, 0, 0);// paste the frame into the event args image
if (ImageCaptured != null)
{
// get from the clipboard
tempObj = Clipboard.GetDataObject();
tempImg = (System.Drawing.Bitmap) tempObj.GetData(System.Windows.Forms.DataFormats.Bitmap);/*
* For some reason, the API is not resizing the video
* feed to the width and height provided when the video
* feed was started, so we must resize the image here
*/
x.WebCamImage = tempImg.GetThumbnailImage(m_Width, m_Height, null, System.IntPtr.Zero);// raise the event
this.ImageCaptured(this, x);
}// restart the timer
Application.DoEvents();
if (! bStopped)
this.timer1.Start();
}catch (Exception excep)
{
MessageBox.Show("An error ocurred while capturing the video image. The video capture will now be terminated.\r\n\n" + excep.Message);
this.Stop(); // stop the process
}
}#endregion
private void WebCamCapture_Load(object sender, System.EventArgs e)
{
}
}
}
[/code]
Hi I was tring to run the program form Programous but I get two errors when I try to run it
Error 1 The type or namespace name 'WebcamEventArgs' does not exist in the namespace 'WebCam_Capture' (are you missing an assembly reference?) C:\Users\Alin\Documents\Visual Studio 2005\Projects\WebCam_Capture\WebCam_Capture\Form1.cs 37 79 WebCam_Capture
Anyone has an ideea how I can rezolve this?
Thanks
