public void TakePhoto()
{
string bla = "bla";
HandleError (_camera_set_photovf_property (handle,
ImageProperty.CAMERA_IMGPROP_WIN_ID,
ref bla,
ImageProperty.CAMERA_IMGPROP_END));
HandleError (camera_start_photo_viewfinder (handle, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero));
System.Threading.Thread.Sleep (3000);
HandleError (camera_take_photo (handle, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero, true));
}