public void StartWebCam() //打开视频设备
{
byte[] IpszName = new byte[100];
byte[] IpszVer = new byte[100];
VideoAPI.capGetDriverDescriptionA(0, IpszName, 100, IpszVer, 100);
this.IwndC = VideoAPI.capCreateCaptureWindowA(IpszName, VideoAPI.WS_CHILD | VideoAPI.WS_VISIBLE, 0, 0, mWidth, mHeight, mControlPtr, 0);
if (VideoAPI.SendMessage(IwndC, VideoAPI.WM_CAP_DRIVER_CONNECT, 0, 0))
{
VideoAPI.SendMessage(IwndC, VideoAPI.WM_CAP_SET_PREVIEWRATE, 100, 0);
VideoAPI.SendMessage(IwndC, VideoAPI.WM_CAP_SET_PREVIEW, true, 0);
}
}
public void GrabImage(IntPtr hWndC, string path) //拍照
{
IntPtr hBmp = Marshal.StringToHGlobalAnsi(path);
VideoAPI.SendMessage(IwndC, VideoAPI.WM_CAP_SAVEDIB, 0, hBmp.ToInt32());
}
public void CloseWebcam() //关闭视频设备
{
VideoAPI.SendMessage(IwndC, VideoAPI.WM_CAP_DRIVER_DISCONNECT, 0, 0);
}