BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  Convert a String to a Stream          BorlandTalk.com Forum Index -> comp.lang.pascal.delphi.misc View previous topic :: View next topic   Author Message Bruno G. Guest Posted: Thu Jan 29, 2004 2:56 pm    Post subject: Convert a String to a Stream Hi! I'm loading a bitmap image from its text representation in a DFM file - Everything is working, but it's way too slow. What I do is this: Trim extra information from the Picture.Data string - BMP start with 'BM' or 424D. Convert the string to a stream by converting each 2 characters pair ('42', '4D', etc.) to its decimal equivalent (66, 77, etc.) and putting it into a TMemoryStream. I can then use the LoadFromStream method to display the image. This works fine, but it takes forever! I'm sure there is a way to convert the whole string to a stream in a simple and fast way, but I can't find it. Anyone has a suggestion? Thanks in advance. Bruno G. Montreal, QC, Canada Back to top Rob Kennedy Guest Posted: Thu Jan 29, 2004 3:36 pm    Post subject: Re: Convert a String to a Stream Bruno G. wrote: Quote: I'm loading a bitmap image from its text representation in a DFM file - Everything is working, but it's way too slow. You might want to take a look at ObjectTextToBinary and TParser.HexToBinary, and HexToBin. Those are the routines the run-time library can use to make the same conversion you're doing. The text-to-binary conversion is actually performed by the compiler when you create your program, so no conversion takes place when loading the form at run time. -- Rob Back to top Bruno G. Guest Posted: Thu Jan 29, 2004 4:32 pm    Post subject: Re: Convert a String to a Stream Quote: Bruno G. wrote: I'm loading a bitmap image from its text representation in a DFM file - Everything is working, but it's way too slow. Rob Kennedy wrote: Quote: You might want to take a look at ObjectTextToBinary and TParser.HexToBinary, and HexToBin. WOW! HexToBin was exactly what I needed... Loading one DFM (with two big image list) went from 8m46s to only 27s... Thanks!! Bruno G. 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