Article View: borland.public.cppbuilder.multimedia
Article #462Re: How to draw into a jpeg image
From: Remy Lebeau (TeamB)
Date: Tue, 01 Jun 2004 22:23
Date: Tue, 01 Jun 2004 22:23
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"Mario Sernicola" <mariosernicola@nospam.libero.it> wrote in message news:40bcd795$1@newsgroups.borland.com... > Timage1->Canvas->Pen->Width = 1; <snip> > a message error appears: > > "Can only modify an image if it contains a bitmap" The error is correct. The Canvas property is only valid when the Picture contains a TBitmap. > How can I draw on TImage either if it contains a BMP or JPG??? You can't. You would have to convert the JPG into a BMP first, then draw on it, then convert it back into a JPG again. The problem is that JPG is a lossy format. The more you alter it, the more image quality it loses. Gambit
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 10d0fc,57413bdb9b690d15 X-Google-Attributes: gid10d0fc,public From: "Remy Lebeau \(TeamB\)" <gambit47.no.spam@no.spam.yahoo.com> Newsgroups: borland.public.cppbuilder.multimedia References: <40bcd795$1@newsgroups.borland.com> Subject: Re: How to draw into a jpeg image Date: Tue, 1 Jun 2004 15:23:01 -0700 Lines: 24 X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 6.00.2800.1409 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 NNTP-Posting-Host: 67.22.135.163 Message-ID: <40bd02cb@newsgroups.borland.com> X-Trace: newsgroups.borland.com 1086128843 67.22.135.163 (1 Jun 2004 15:27:23 -0700) Path: arc1-ca.pugleaf.net!controlnews3.google.com!news1.google.com!news.glorb.com!hammer.uoregon.edu!logbridge.uoregon.edu!newsfeeds.ihug.co.nz!ihug.co.nz!newsgroups.borland.com!not-for-mail