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TImageEnView and Proc.Fill() method

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T O P I C R E V I E W
Flashcqxg	Posted - Apr 16 2025 : 22:56:05 When using the Proc.Fill() method of TImageEnView to dynamically change colors with an Opacity value of 0.5, after changing the color several times, the original image is no longer visible. What is the reason for this, and is there a way to fix it?
8 L A T E S T R E P L I E S (Newest First)
Flashcqxg	Posted - Apr 18 2025 : 22:37:43 Thanks.
xequte	Posted - Apr 18 2025 : 20:44:34 Yes, that is what will happen. Why not use something like: ImageEnView1.Assign( fOriginalFile ); ImageEnView1.Proc.Fill(cxColorComboBox2.ColorValue, 0.5); ImageEnView1.update. Nigel Xequte Software www.imageen.com
Flashcqxg	Posted - Apr 18 2025 : 02:35:45 My code: ImageEnView1.Proc.Fill(cxColorComboBox2.ColorValue, 0.5); ImageEnView1.update. cxColorComboBox2 is a color select box. First time is ok,but....you won't be able to see the content on the picture on the fifth try.
xequte	Posted - Apr 18 2025 : 02:30:45 Hi That is: // Blend image with 50% blue ImageEnView1.Proc.Fill( clBlue, 0.5 ); Nigel Xequte Software www.imageen.com
Flashcqxg	Posted - Apr 18 2025 : 02:19:10 how to blend ?
xequte	Posted - Apr 18 2025 : 02:17:00 Hi Image formats do not support that. You can make an image 50% transparent, but then it won't be 50% blue (unless displayed over a blue background). The only way to make an image 50% blue is to perform a 50% blend with blue (and 0% transparency). If you then apply 50% red then you are going to get a result which is 25% image, 25% blue and 50% red, etc. Your only option is to restore the original image and apply the new color changes to it. Nigel Xequte Software www.imageen.com
Flashcqxg	Posted - Apr 18 2025 : 01:53:55 I want to set a different color each time, and set its opacity value to 0.5 Proc.Fill() and AlphaFill() can not do this. How to do?
xequte	Posted - Apr 17 2025 : 23:45:18 Hi Fill does not alter the alpha channel, only performs a color blend with the existing image content. So each time you fill at 0.5 opacity, you are making the image 50% solid color. If you instead want to make the image 50% transparent use https://www.imageen.com/help/TImageEnProc.AlphaFill.html Nigel Xequte Software www.imageen.com