AutoHotkey Community

Serenity · Joined: 08 Nov 2004 Posts: 839

On 2k I notice that 16x16 icons look degraded when loaded into a listview with ExtractIconA. I get this with the main listview example in the help file, and with ExtractAssociatedIconA, yet the same icons look fine in Explorer in list/detail mode. I'm not sure exactly why this is. I saw this thread and tried CopyImage but icons still look degraded, only slightly different to without CopyImage. Is it possible to load only the small icons instead of relying on the system to resize icons to fit?
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"Anything worth doing is worth doing slowly." - Mae West

Chris · Site Admin Joined: 02 Mar 2004 Posts: 10467

You could try using ExtractAssociatedIconEx(), but it requires Windows 2000 or later. Furthermore, I'm not sure if it's the method Explorer uses to get better quality icons.

If you find out more, please post here.

Serenity · Joined: 08 Nov 2004 Posts: 839

Thanks Chris. I tried ExtractAssociatedIconEx() and for some reason DllCall returns -4, The specified function could not be found inside the DLL. I have version 5.0.3700.6705 of shell32.dll.
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"Anything worth doing is worth doing slowly." - Mae West

PhiLho · Posted: Thu Apr 13, 2006 3:35 pm Post subject:

You can use Dependency Walker to check the list of functions exported by a given DLL.
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vPhiLho := RegExReplace("Philippe Lhoste", "^(\w{3})\w*\s+\b(\w{3})\w*$", "$1$2")

Serenity · Joined: 08 Nov 2004 Posts: 839

I tried this instead and it returns 0xc0000005, so the function was called, but something is wrong:

Chris · Site Admin Joined: 02 Mar 2004 Posts: 10467

Serenity · Joined: 08 Nov 2004 Posts: 839

Thanks Chris, the following works for me, but if I change the third parameter to IconIndex, the wrong icons are loaded for some programs. In either case, the icons are still appear degraded.

hIcon := DllCall("Shell32\ExtractAssociatedIconExA", UInt, 0, Str, this, UShortP, 0, UShortP, IconID)
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"Anything worth doing is worth doing slowly." - Mae West

Chris · Site Admin Joined: 02 Mar 2004 Posts: 10467

Thanks for the follow-up. I've researched this some more and it appears that SHGetFileInfo() is the recommended way to get the high-quality small-icon associated with a file type. The following is a working example:

Lemming · Joined: 20 Dec 2005 Posts: 150 Location: Malaysia

Is it absolutely necessary for the script to load icons from an EXE? If not, you can extract the required icon beforehand using an icon editor, then save it to an .ico file. Ahk can then load the .ico file without any dllcalls.

Tekl · Joined: 24 Sep 2004 Posts: 813 Location: Germany

Hi,

the example on the listview-page does not show high-quality small icons on my XP SP2 with AHK 1.0.44.7. Is it broken or what could be the reason?
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Tekl

Tekl · Joined: 24 Sep 2004 Posts: 813 Location: Germany

Ahh... I tried 0x101 instead of 0x100 (SHGFI_ICON) to get the right small icon and it works.
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Tekl

Chris · Site Admin Joined: 02 Mar 2004 Posts: 10467

Thanks for the tip; I've updated the example on the Listview page.

skrommel · Joined: 30 Jul 2004 Posts: 175

Works great for the first icon in the file, but how about files with multiple icons?

I can't see any option to specify what icon to access in SHGetFileInfoA. The only thing I have found is FindResource.

There's a working sample with sourcecode at
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnwui/html/msdn_icons.asp

Look for ReadIconFromEXEFile.

Skrommel