怎么写打开win7旗舰版笔记本电脑的照相机,用电脑拍照?

*** 作步骤如下：

1、开始→运行→输入：devmgmt.msc 点击确定（或者按回车键）执行命令；

2、点击展开图像设备，右击摄像头型号，选择属性；

3、点击驱动程序选项卡，点击驱动程序详细信息，查看到摄像头对应程序的路径及名称；

4、按照该路径找到这个程序，右击选择发送到桌面快捷方式即可。

5、双击运行该程序，即可拍照。

请先安装Microsoft DirectX SDK

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 调用摄像头

{

public partial class Form1 : Form

{

cVideo video

public Form1()

{

InitializeComponent()

}

public class VideoAPI //视频API类

{

// 视频API调用

[DllImport("avicap32.dll")]

public static extern IntPtr capCreateCaptureWindowA(byte[] lpszWindowName, int dwStyle, int x, int y, int nWidth, int nHeight, IntPtr hWndParent, int nID)

[DllImport("avicap32.dll")]

public static extern bool capGetDriverDescriptionA(short wDriver, byte[] lpszName, int cbName, byte[] lpszVer, int cbVer)

[DllImport("User32.dll")]

public static extern bool SendMessage(IntPtr hWnd, int wMsg, bool wParam, int lParam)

[DllImport("User32.dll")]

public static extern bool SendMessage(IntPtr hWnd, int wMsg, short wParam, int lParam)

// 常量

public const int WM_USER = 0x400

public const int WS_CHILD = 0x40000000

public const int WS_VISIBLE = 0x10000000

public const int SWP_NOMOVE = 0x2

public const int SWP_NOZORDER = 0x4

public const int WM_CAP_DRIVER_CONNECT = WM_USER + 10

public const int WM_CAP_DRIVER_DISCONNECT = WM_USER + 11

public const int WM_CAP_SET_CALLBACK_FRAME = WM_USER + 5

public const int WM_CAP_SET_PREVIEW = WM_USER + 50

public const int WM_CAP_SET_PREVIEWRATE = WM_USER + 52

public const int WM_CAP_SET_VIDEOFORMAT = WM_USER + 45

public const int WM_CAP_START = WM_USER

public const int WM_CAP_SAVEDIB = WM_CAP_START + 25

}

public class cVideo //视频类

{

private IntPtr lwndC //保存无符号句柄

private IntPtr mControlPtr//保存管理指示器

private int mWidth

private int mHeight

public cVideo(IntPtr handle, int width, int height)

{

mControlPtr = handle//显示视频控件的句柄

mWidth = width //视频宽度

mHeight = height //视频高度

}

/// <summary>

/// 打开视频设备

/// </summary>

public void StartWebCam()

{

byte[] lpszName = new byte[100]

byte[] lpszVer = new byte[100]

VideoAPI.capGetDriverDescriptionA(0, lpszName, 100, lpszVer, 100)

this.lwndC = VideoAPI.capCreateCaptureWindowA(lpszName, VideoAPI.WS_CHILD | VideoAPI.WS_VISIBLE, 0, 0, mWidth, mHeight, mControlPtr, 0)

if (VideoAPI.SendMessage(lwndC, VideoAPI.WM_CAP_DRIVER_CONNECT, 0, 0))

{

VideoAPI.SendMessage(lwndC, VideoAPI.WM_CAP_SET_PREVIEWRATE, 100, 0)

VideoAPI.SendMessage(lwndC, VideoAPI.WM_CAP_SET_PREVIEW, true, 0)

}

}

/// <summary>

/// 关闭视频设备

/// </summary>

public void CloseWebcam()

{

VideoAPI.SendMessage(lwndC, VideoAPI.WM_CAP_DRIVER_DISCONNECT, 0, 0)

}

/// <summary>

/// 拍照

/// </summary>

/// <param name="path">要保存bmp文件的路径</param>

public void GrabImage(IntPtr hWndC, string path)

{

IntPtr hBmp = Marshal.StringToHGlobalAnsi(path)

VideoAPI.SendMessage(lwndC, VideoAPI.WM_CAP_SAVEDIB, 0, hBmp.ToInt32())

}

}

private void button1_Click(object sender, EventArgs e)

{

video = new cVideo(pictureBox1.Handle, pictureBox1.Width, pictureBox1.Height)

video.StartWebCam()

}

private void button2_Click(object sender, EventArgs e)

{

video.CloseWebcam()

}

private void button3_Click(object sender, EventArgs e)

{

video.GrabImage(pictureBox1.Handle, "d:\\a.bmp")

}

}

}

首先WIN7正常情况下是不带照相机的，自己下载安装一个就可以了（具体软件请百度搜索）安装完成后按下列步骤 *** 作即可拍照：

1、打开我的电脑找到照相机打开

2、点击下图中红框所示的相机图标就可以拍照了

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