Hi there, first of all, congratulations for this very handy and superb tool, thx for sharing it! At this moment I'm trying creating very large images (over gigapixel) but everything I tested with winapi (including .Net System.Drawing.Bitmap, Gdipluss::Bitmap, CImage - which uses CreateDIBSection inside) can't get the work done (always getting invalid parameter error, not matter it the platform is x64 or not). When seeking for answers over the internet I read someone suggesting to download Pain