//设置CGCamera的参数,
 void SetFindPointCGCameraInfo()
 {
     SetCGCameraIsOpen(false);
     if (mDeviceHandle == IntPtr.Zero)
     {
         return;
     }
     CGAPI.SetExposureTime(mDeviceHandle, 239);
 }
 //设置CGCamera的参数,用于调整摄像头位置.
 void SetPlayCGCameraInfo()
 {
     SetCGCameraIsOpen(true);
     if (mDeviceHandle == IntPtr.Zero)
     {
         return;
     }
     CGAPI.SetExposureTime(mDeviceHandle, 16383);
 }