发个小程序希望有人需要(操作摄像头)
2010-05-18 13:07
218 查看
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();
}
}
}
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();
}
}
}
相关文章推荐
- 发个小程序希望有人需要(操作摄像头)
- 发个小程序希望有人需要(操作摄像头)
- 发个小程序希望有人需要(操作摄像头)
- 重装IE时出错: 以前的安装有未完成的操作,需要重新启动,建议在安装INTERNET EXPLORER6.0之前重新启动计算机,现在安装程序将关闭
- windows无法结束这个程序,要完成操作可能需要更多时间??
- 您希望通过将所有ArrayList对象替换为相应的泛型版本以提高应用程序的效率,并使得代码更易于使用。当结构体或其他值类型存储在这些数据结构中时,会导致装箱/拆箱操作,这时就需要这么做。
- 编写操作数据库的JAVA程序时需要的连接MySQL数据库的JDBC连接包mysql-connector-java-5.1.10.zip怎么安装
- 自己写的在服务器上一段重试次数的程序,对于TAIR操作需要加乐观锁版本号防止集群上数据安全
- delphi调试需要管理员权限程序报错“Unable to create process:请求的操作需要提升”
- iOS 中 当程序进入后台 但是程序员希望在程序进入后台的时候还可以运行一段代码时候可以做以下的操作
- SQL Server补丁:“以前进行的程序安装创建了挂起的文件操作,应用程序需要重启”的错误
- RuntimeException的特殊情况&&[C++] 有人会在程序中try catch吗?&&什么样的问题需要用try catch语句执行
- 在开发iOS程序时,有时候需要将时间格式调整成自己希望的格式,这个时候我们可以用NSDateFormatter类来处理。 例如: //实例化一个NSDateFormatter对象 NSDateFor
- C primer plus 第一章习题 1.13,需要一个将英寸转换成厘米的程序。他们希望建立的该程序可提示用户输入英寸值。
- 如通过android程序访问网络,比如webservices程序,需要允许程序访问网络,操作如下
- 初学java,写的一个小程序遇到点问题,又碰上论坛关闭,在此上代码,希望能有人帮我看下,多谢
- 近日有需要写点C#程序,有用到Dataset数据集和SQLite数据库,由于我从来就不擅长记各种编程语言的语法,所以在查阅一堆资料后,留下以下内容备忘: 一、SQLite操作,直接贴代码,很简单
- 升级IE弹出"以前的安装有尚未完成的操作,需要重新启动。建议在运行Internet Explorer安装程序之前重新启动计算机。现在安装程序将关闭"
- 完成文件复制操作,在程序运行后提示输入源文件路径,然后再输入目标文件路径。
- 工作4-5年的.NET开发人员也需要有人带带才可以保证软件项目的质量