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KIcon

Another component that is sometimes useful. This component makes sense if a more complex manipulation with icons (or better icon files *.ico) than just viewing is needed.

I was googling for a suitable component in January 2005 and although i found many components, there was always some problem with them. The main issue was a lack of versatility, i.e. the ability to display any icon - inclusive 32-bit icons with alpha channel - in any 32-bit Windows system (KIcon does this, not tested on a 64-bit system).

KIcon features
32-bit icons and cursors supported
Full PNG icon image support (up to Delphi 2007 PngImage component is needed)
Correct rendering in all 32-bit Windows
Optionally all icon images can be drawn
Icons can be stretched when drawn
Except for the normal rendering the sole color image (image information) or the sole mask (transparency) can be drawn
Icons can be loaded from an ico file, stream, HICON, module resources (exe or dll), associated modules (file associations)
Icons can be saved into an ico file or stream
Icon image manipulation (inserting/deleting/cropping/enlarging)
full TPicture integration

Necessary packages

From version 1.8 none. Up to version 1.7 JEDI Code Library (JCL) - Version 1.100+ - download here.

KIcon downloads

Note: there are only stable packages here. For latest changes and hotfixes please download KControls.

File	Version	Number of downloads	Available tools:	Changes
kicon_2.1.zip	2.1	501	Delphi 6+, Lazarus 0.9.26+	CopyToAlphaBitmap function fixed
kicon_2.0.zip	2.0	138	Delphi 6+, Lazarus 0.9.26+	fixed several bugs
kicon_1.9.zip	1.9	55	Delphi 6+, Lazarus 0.9.26+	tiny changes due to the first release of KControls, 16.11.09 hotfix: ability to load some slightly corrupted icons, LoadFromModule png loading fixed, kcontrols.pas put into the package.
KIcon_1.8.zip	1.8	180	Delphi 6+, Lazarus 0.9.26+	doesn't need JCL, port to Lazarus(Win32), full PNG icon support
KIcon17.zip	1.7	339	Delphi 6+	Update for Delphi 2009, PNG read/write support, 256x256 pixel icon support
KIcon16.zip	1.6	489	Delphi 6 till 2007	Initial release on this web site

Screenshots (click the images to enlarge)

KIcon demo - big 32-bit image with alpha channel is shown

All icon images (horizontally displayed)

Displaying without mask - 32-bit images do not need a mask here - alpha channel does this

Article author: tk

Add comment or question

inserted: 2011-06-24 23:41:31 Reply...

From: yannick

Thank you for this library, great !!! I'd like to convert a JPEG file to an ICO file format with inside : 128_RGB, 48_RGG, 32_RGB, 16_RGB , 48_256, 32_256, 16_256. How to convert the source file directly into 256 color without ugly colors ? An other good idea will be to support compression for 256x256_RGB (supported with vista mini). Best regards.

inserted: 2010-11-20 05:57:52 Reply...

From: zizzo81

Hi tk, I've found your TKIcon component fabolous, but I have a problem. I've got a PNG image (with alpha channel) and I can't Add it to an icon. The only way I got for achieving this is to paste it to a TBitmap then adding it, losing the alpha channel this way. Could you please illuminate me? Thanks.

inserted: 2010-11-20 09:20:26 Reply...

From: tk

I'm sorry this is not supported yet. For next version I'll implement custom AddFrom... methods (for Delphi sth. like CopyToPng - per pixel copy). Until then please use an external tool to convert png to Vista icon.

inserted: 2008-10-16 15:57:32 Reply...

From: glob

is it possible with kicon to paint an icon's alpha transparency mask as a gray scale image? i know you can use an IconDrawStyle of idsMaskOnly to paint just the monochrome mask, however for an icon with alpha transparency this is not sufficient :( thanks :)

inserted: 2008-10-17 01:13:23 Reply...

From: tk

I made a new version 1.7 and it supports it via TIconDrawStyle.idsAlphaChannel.

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