There is no built in DLL in Windows or .Net - but there are several api's that can be downloaded (both free and paid) that will do this to varying levels and for various bar code types.
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AngloThaiSolutions
@AngloThaiSolutions
Posts
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How to generate barcode and qrcode dynamically? -
get pixel color on imageThere are two ways depending if you need performance or not. Use GetPixel (not performant) or LockBits and and seek the byte (s) (can be calculated using Scan0 position plus y * stride + ( x * bits per pixel) assuming non indexed - for indexed this will give a reference in the pallet object which will hold the colour. Many examples of basic GDI+ lockbits scanning on the web.
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How old were you when you first wrote a line of code ?Yeah - never had on the ZX81 (it was a school machine - bought by the local authorities - one of two for the whole school) - but had one on the old Vic20 and CBM64 - 20 minutes to load a game and failed as often as not too!
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How old were you when you first wrote a line of code ?11 years old. That was back in 1981, the machine was a Sinclair ZX 81 (massive 0.25kb of memory and no way to save programs - they had to be rekeyed each time).
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format is crap after logging onAfter I log in, the format goes to pot (following automatic refresh). In the article I get a JS error: Webpage error details User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; WOW64; Trident/4.0; GTB7.2; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; .NET4.0E; InfoPath.2) Timestamp: Tue, 24 Jan 2012 03:16:51 UTC Message: 'social' is undefined Line: 2276 Char: 1 Code: 0 URI: http://www.codeproject.com/Articles/2056/Image-Processing-for-Dummies-with-C-and-GDI-Part-3 And even here the format corruption makes filling this in very difficult. Webpage error details User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; WOW64; Trident/4.0; GTB7.2; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; .NET4.0E; InfoPath.2) Timestamp: Tue, 24 Jan 2012 03:23:47 UTC Message: Object expected Line: 1871 Char: 2 Code: 0 URI: http://www.codeproject.com/script/Forums/Edit.aspx?fid=1645&floc=/Forums/1645/Site-Bugs-Suggestions.aspx If I view not logged on, it works fine. IE8 (32bit) - Win7 Ult 64Bit.