i don''t know how to decode the HRESULT, ie, convert it to something(ie,string) to put it on a file or probably display it on the screen, thanks!

if its a direct3d error you can use a D3DX function called GetErrorString() look up the D3DX functions in the SDK help

http://www.positech.co.uk

hi thanks! i''ve already used that and i think you can use it in all of dx apis,

This could be usefull for my logging system

Also see FormatMessage for generic Win32 errors. I don''t recall whether DXErr handles those.

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Thanks to Kylotan for the idea!