下面的这段代码，在昨晚运行的时候还能实现除录像外的其他基本功能，但今晚运行时，初始化加载获取画面就不能获取了，弄了很久还是找不到原因，真的很烦，哪位大侠能帮帮忙，小弟不胜感激
//程序入口文件Program.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Windows.Forms;namespace webcam
{
static class Program
{
/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main()
{
//Application.EnableVisualStyles();
// Application.SetCompatibleTextRenderingDefault(false);
Application.Run(new Form2());
}
}
}
//程序入口文件Program.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Windows.Forms;namespace webcam
{
static class Program
{
/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main()
{
//Application.EnableVisualStyles();
// Application.SetCompatibleTextRenderingDefault(false);
Application.Run(new Form2());
}
}
}
//主要代码文件Form2.cs
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Drawing.Imaging;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;namespace webcam
{
public partial class Form2 : Form
{
public Form2()
{
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_STOP = WM_CAP + 68;
const int WM_CAP_FILE_SET_CAPTURE_FILEA = WM_CAP + 20;
const int WM_CAP_SEQUENCE_NOFILE = WM_CAP + 63;
const int WM_CAP_SEQUENCE = WM_CAP + 62;
const int WM_CAP_FILE_GET_CAPTURE_FILE = WM_CAP + 21; //获得捕获文件
const int WM_CAP_SAVEDIB = WM_CAP + 25;//保存文件
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; //什么参数
int hHwnd; //////////////////////////////////////////////////////////////////////////////////////////////////////
//[System.Runtime.InteropServices.DllImport("avicap32.dll", CharSet = CharSet.Ansi, SetLastError = true, ExactSpelling = true)]
//static extern int capCreateCaptureWindowA([MarshalAs(UnmanagedType.VBByRefStr)] ref string lpszWindowName, int dwStyle, int x, int y, int nWidth, short nHeight, int hWndParent, int nID);
//////////////////////////////////////////////////////////////////////////////////////////////////////
[System.Runtime.InteropServices.DllImport("user32", EntryPoint="SendMessageA", CharSet=CharSet.Ansi, SetLastError=true, ExactSpelling=true)]
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("User32.dll")]
//static extern bool SendMessage(IntPtr hWnd, int wMsg, int wParam, long lParam); /////////////////////////////////////////////////////////
[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 = this.Size.Height;
int iWidth =this.Size.Width;
//
// 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);
}
//截图(抓图)
//private void GrabImage(string path)
//{
// IntPtr hBmp = Marshal.StringToHGlobalAnsi(path);
// SendMessage(hHwnd, WM_CAP_SAVEDIB, 0, hBmp.ToInt64());
//}
//初始化
private void Form2_Load(object sender, EventArgs e)
{
OpenPreviewWindow();
this.button1.Enabled = false;
this.button2.Enabled = true;
this.button3.Enabled = true;
this.button4.Enabled = true;
this.button5.Enabled = true;
this.button6.Enabled = false;
device_number_textBox.Select();
}
//播放
private void button1_Click_1(object sender, EventArgs e)
{
OpenPreviewWindow();
this.button1.Enabled = false;
this.button2.Enabled = true;
this.button3.Enabled = true;
this.button4.Enabled = true;
this.button5.Enabled = true;
this.button6.Enabled = false; }
private void button2_Click(object sender, EventArgs e)
{
ClosePreviewWindow();
this.button1.Enabled = true;
this.button2.Enabled = false;
this.button3.Enabled = false;
this.button4.Enabled = false;
this.button5.Enabled = false;
this.button6.Enabled = false;
}
//暂停 （暂停功能也不能很好的实现，望一块解决）我的暂停思想是：先在断开连接并截图，把截的图读到//picturebox里面。，这里我还是用一个panel，不怕麻烦可以在暂停时隐藏panel
private void button5_Click(object sender, EventArgs e)
{
//if (MyVideo != null)
//{
// MyVideo.Pause();
//}
SendMessage(hHwnd, WM_CAP_DRIVER_DISCONNECT, iDevice, 0);
pictureBox1.Height = this.Size.Height;
pictureBox1.Width = this.Size.Width;
Bitmap flag = new Bitmap("路径\\http_imgload.jpg");
Graphics flagGraphics = Graphics.FromImage(flag);
//this.pictureBox1.Image = (System.Drawing.Image)pic;
pictureBox1.Image =flag ;
this.pictureBox1.SizeMode = System.Windows.Forms.PictureBoxSizeMode.Zoom;
//this.picCapture.Visible = false;
this.button1.Enabled = true;
this.button2.Enabled = false;
this.button3.Enabled = false;
this.button4.Enabled = true;
this.button5.Enabled = false;
this.button6.Enabled = false; }
//截图、抓图
private void button4_Click(object sender, System.EventArgs e)
{
try
{
//SendMessage(hHwnd, WM_CAP_SAVEDIB, 0, 0);
SendMessage(this.hHwnd, 0x41e, 0, 0);
IDataObject obj1 = Clipboard.GetDataObject();
if (obj1.GetDataPresent(DataFormats.Bitmap))//typeof(Bitmap)
{
Image image1 = (Image)obj1.GetData(typeof(Bitmap));
// this.panel_Vedio.Image = image1;
// this.ClosePreviewWindow(); SaveFileDialog SaveFileDialog1 = new SaveFileDialog();
SaveFileDialog1.FileName = "img" + DateTime.Now.ToString("yyyyMMddHHmmssfff");//yyyyMMddHHmmssfff
SaveFileDialog1.Filter = "jpg|*.jpg|bmp|*.bmp|gif|*.gif";
//SaveFileDialog1.Filter = "Image Files(*.JPG;*.GIF)|*.JPG;*.GIF|All files (*.*)|*.*";
if (SaveFileDialog1.ShowDialog() == DialogResult.OK)
{
image1.Save(SaveFileDialog1.FileName, ImageFormat.Bmp);
}
this.button1.Enabled = true;
this.button2.Enabled = true;
this.button3.Enabled = true;
this.button4.Enabled = true;
this.button5.Enabled = true;
this.button6.Enabled = true;
device_number_textBox.Text = "截图成功";
}
else
{
device_number_textBox.Text = obj1.GetDataPresent(typeof(Bitmap)).ToString();
device_number_textBox.Text += "error1";
}
}
catch
{
device_number_textBox.Text = "error2";
}//本文转摘自『蓝派网』http://www.lan27.com/Article/200706/1750.htm
}
//录像
private void button3_Click(object sender, EventArgs e)
{
Kinescope(@"e:\media\"+DateTime.Now.ToString("yyyyMMddHHmmssfff")+".avi");
this.button1.Enabled = true;
this.button2.Enabled = true;
this.button3.Enabled = true;
this.button4.Enabled = true;
this.button5.Enabled = false;
this.button6.Enabled = true;
}
/// <summary>
/// 录像
/// </summary>
/// <param name="path">要保存avi文件的路径</param>
public void Kinescope(string path)
{
IntPtr hBmp = Marshal.StringToHGlobalAnsi(path);
// SendMessage(this.hHwnd, 0x41e, 0, 0);
SendMessage(this.hHwnd, WM_CAP_FILE_SET_CAPTURE_FILEA, 0, hBmp);
SendMessage(this.hHwnd, WM_CAP_SEQUENCE, 0, 0);
}
/// <summary>
/// 停止录像
/// </summary>
public void StopKinescope()
{
SendMessage(this.hHwnd, WM_CAP_STOP, 0, 0);
}
//停止录像
private void button6_Click(object sender, EventArgs e)
{
StopKinescope();
this.button1.Enabled = true;
this.button2.Enabled = true;
this.button3.Enabled = true;
this.button4.Enabled = true;
this.button5.Enabled = true;
this.button6.Enabled = false;
}
} }
// Form2.Designer.cs文件
namespace webcam
{
partial class Form2
{
/// <summary>
/// Required designer variable.
/// </summary>
private System.ComponentModel.IContainer components = null; /// <summary>
/// Clean up any resources being used.
/// </summary>
/// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
} #region Windows Form 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()
{
System.ComponentModel.ComponentResourceManager resources = new System.ComponentModel.ComponentResourceManager(typeof(Form2));
this.button1 = new System.Windows.Forms.Button();
this.device_number_textBox = new System.Windows.Forms.TextBox();
this.picCapture = new System.Windows.Forms.Panel();
this.pictureBox1 = new System.Windows.Forms.PictureBox();
this.button2 = new System.Windows.Forms.Button();
this.button3 = new System.Windows.Forms.Button();
this.button4 = new System.Windows.Forms.Button();
this.button5 = new System.Windows.Forms.Button();
this.saveFileDialog1 = new System.Windows.Forms.SaveFileDialog();
this.button6 = new System.Windows.Forms.Button();
((System.ComponentModel.ISupportInitialize)(this.pictureBox1)).BeginInit();
this.SuspendLayout();
//
// button1
//
this.button1.Location = new System.Drawing.Point(12, 12);
this.button1.Name = "button1";
this.button1.Size = new System.Drawing.Size(75, 23);
this.button1.TabIndex = 0;
this.button1.Text = "开始";
this.button1.UseVisualStyleBackColor = true;
this.button1.Click += new System.EventHandler(this.button1_Click_1);
//
// device_number_textBox
//
this.device_number_textBox.Location = new System.Drawing.Point(505, 14);
this.device_number_textBox.Name = "device_number_textBox";
this.device_number_textBox.Size = new System.Drawing.Size(75, 21);
this.device_number_textBox.TabIndex = 1;
this.device_number_textBox.Text = "不知啥意思";
//
// picCapture
//
this.picCapture.Location = new System.Drawing.Point(12, 41);
this.picCapture.Name = "picCapture";
this.picCapture.Size = new System.Drawing.Size(481, 350);
this.picCapture.TabIndex = 2;
//
// pictureBox1
//
//this.pictureBox1.Image = image;没添加图片
this.pictureBox1.Location = new System.Drawing.Point(515, 41);
this.pictureBox1.Name = "pictureBox1";
this.pictureBox1.Size = new System.Drawing.Size(311, 350);
this.pictureBox1.SizeMode = System.Windows.Forms.PictureBoxSizeMode.Zoom;
this.pictureBox1.TabIndex = 7;
this.pictureBox1.TabStop = false;
//
// button2
//
this.button2.Location = new System.Drawing.Point(93, 12);
this.button2.Name = "button2";
this.button2.Size = new System.Drawing.Size(75, 23);
this.button2.TabIndex = 3;
this.button2.Text = "停止";
this.button2.UseVisualStyleBackColor = true;
this.button2.Click += new System.EventHandler(this.button2_Click);
//
// button3
//
this.button3.Location = new System.Drawing.Point(336, 12);
this.button3.Name = "button3";
this.button3.Size = new System.Drawing.Size(75, 23);
this.button3.TabIndex = 4;
this.button3.Text = "录像";
this.button3.UseVisualStyleBackColor = true;
this.button3.Click += new System.EventHandler(this.button3_Click);
//
// button4
//
this.button4.Location = new System.Drawing.Point(255, 12);
this.button4.Name = "button4";
this.button4.Size = new System.Drawing.Size(75, 23);
this.button4.TabIndex = 5;
this.button4.Text = "截图";
this.button4.UseVisualStyleBackColor = true;
this.button4.Click += new System.EventHandler(this.button4_Click);
//
// button5
//
this.button5.Location = new System.Drawing.Point(174, 12);
this.button5.Name = "button5";
this.button5.Size = new System.Drawing.Size(75, 23);
this.button5.TabIndex = 6;
this.button5.Text = "暂停";
this.button5.UseVisualStyleBackColor = true;
this.button5.Click += new System.EventHandler(this.button5_Click);
//
// button6
//
this.button6.Location = new System.Drawing.Point(417, 12);
this.button6.Name = "button6";
this.button6.Size = new System.Drawing.Size(75, 23);
this.button6.TabIndex = 8;
this.button6.Text = "停止录像";
this.button6.UseVisualStyleBackColor = true;
this.button6.Click += new System.EventHandler(this.button6_Click);
//
// Form2
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(838, 407);
this.Controls.Add(this.button6);
this.Controls.Add(this.pictureBox1);
this.Controls.Add(this.button3);
this.Controls.Add(this.button4);
this.Controls.Add(this.button5);
this.Controls.Add(this.button2);
this.Controls.Add(this.picCapture);
this.Controls.Add(this.device_number_textBox);
this.Controls.Add(this.button1);
this.MaximizeBox = false;
this.MinimizeBox = false;
this.Name = "Form2";
this.Text = "GoodView test Web Camera";
this.Load += new System.EventHandler(this.Form2_Load);
((System.ComponentModel.ISupportInitialize)(this.pictureBox1)).EndInit();
this.ResumeLayout(false);
this.PerformLayout(); } #endregion private System.Windows.Forms.Button button1;
private System.Windows.Forms.TextBox device_number_textBox;
private System.Windows.Forms.Panel picCapture;
private System.Windows.Forms.Button button2;
private System.Windows.Forms.Button button3;
private System.Windows.Forms.Button button4;
private System.Windows.Forms.Button button5;
private System.Windows.Forms.SaveFileDialog saveFileDialog1;
private System.Windows.Forms.PictureBox pictureBox1;
private System.Windows.Forms.Button button6;
}
}