发个小程序希望有人需要(操作摄像头)

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 Ent ryPoint SendMessageA static extern int SendMessage int hwnd int wMsg int w Param MarshalAs UnmanagedType AsAny object lParam System Runtime InteropServices DllImport user32 Ent ryPoint SetWindowPos static extern int SetWindowPos int hwnd int hWndInsert After 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 lpszWi ndowName 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 wDriv er 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 ToIn t32 0 Connect to device if SendMessage hHwnd WM CAP DRIVER CONNECT iDevi ce 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 iDevic e 0 close window DestroyWindow hHwnd private void button1 Click object sender EventArgs e iDevice int Parse device number textBox Text OpenPreviewWindow C C codecode 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 Ent ryPoint SendMessageA static extern int SendMessage int hwnd int wMsg int w Param MarshalAs UnmanagedType AsAny object lParam System Runtime InteropServices DllImport user32 Ent ryPoint SetWindowPos static extern int SetWindowPos int hwnd int hWndInsert After 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 lpszWi ndowName 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 wDriv er 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 ToIn t32 0 Connect to device if SendMessage hHwnd WM CAP DRIVER CONNECT iDevi ce 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