# Is there a way to detect whether a drawing was created by ODA or another application?

 1. [FAQ](/ja/faq)
2. »
3. [Regular archives](/faq/regular-archives)

The TDFILEPRODUCT command prints to the console either an ODA version string or "Unknown": TOOLKIT\_EXPORT OdString odFileWasSavedBySoftware(const OdDbDatabase\* pDb); This function is not declared in Include headers.
