[Mono-dev] Howto improve Error-Messages of GDI-Functions?

[latency at gmx.de]

I recently ran into a problem where Bitmap.GetPixel(int, int) threw 
ArgumentException with the Message: "Invalid Parameter. A null reference or 
invalid value was found."

As you can image, that does not help at all when debugging your application.

Therefore I've made a quick fix which helped me to have a better exception 
message (btw. the path implements behavior which is specified in MS 
documentation of GetPixel), but still, is there a way to improve the 
exceptions messages of gdi+ in general? Or do we have to do what I've done 
with GetPixel?

Kind Regards,
Valentin S.
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