如何用c#打开摄像头
求热心人帮忙告诉一下用c#如何打开摄像头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;
static extern int SendMessage(int hwnd, int wMsg, int wParam,
object lParam);
static extern int SetWindowPos(int hwnd, int hWndInsertAfter, int x, int y, int cx, int cy, int wFlags);
static extern bool DestroyWindow(int hndw);
static extern int capCreateCaptureWindowA(string lpszWindowName, int dwStyle, int x, int y, int nWidth, short nHeight, int hWndParent, int nID);
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();
}
百度来的 不知道对你有用没。。
ibcadmin 发表于 2014-5-8 22:31
const short WM_CAP = 1024;
const int WM_CAP_DRIVER_CONNECT = WM ...
这片我看过了,还是谢谢你
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