public static extern int imgSessionCopyAreaByNumber(uint sid, uint bufNumber, uint top, uint left, uint height, uint width, IntPtr userBuffer, uint rowPixels, ImaqEnums.IMG_OVERWRITE_MODE overwriteMode, ref uint copiedNumber, ref uint copiedIndex);
public static extern int imgSessionCopyBufferByNumber(uint sid, uint bufNumber, IntPtr userBuffer, ImaqEnums.IMG_OVERWRITE_MODE overwriteMode, ref uint copiedNumber, ref uint copiedIndex);