Hippo icon for cygwin...

[Charles Wilson]

Greg Chicares wrote:
> Might this file:
>   1a652c4c8c31b80c85d6cbc2b4093060 *hippo.ico
> be somehow malformed? My computer BSODs every time I try to view
> it in 'irfanview'. This has happened three times in a row.

BSOD? Well, *any* BSOD is by definition a bug inside ring 0 (e.g. the
core Windows kernel, or a graphics driver.  So, it isn't *.ico's fault.

Still, it'd be good to avoid...

> I tried opening the icon file in gimp-2.2.4, which crashed with:
>   winicon.exe caused an Access Violation at location 00402795
>   in module winicon.exe Reading from location 00000008.
> (no BSOD). Yet the icon displays successfully in 'windows explorer'.

That's a pretty old version of gimp...

> An .ico file actually can cause an application to crash:
>   http://securitytracker.com/alerts/2007/Jun/1018202.html
> That tracker says ms planned to patch the problem, but right now
> I'm using XP SP1, so I wouldn't have that patch.

Hmmm.  Well, the .ico contains the *vista*-approved sizes:

256x256 32bit RGBA .png-compressed
64x64 32bit RGBA
48x48 32bit RGBA
48x48 8bit 256-color indexed (1bit transparency)
48x48 4bit 16-color indexed (1bit transparency)
32x32 32bit RGBA
32x32 8bit 256-color indexed (1bit transparency)
32x32 4bit 16-color indexed (1bit transparency)
24x24 32bit RGBA
24x24 8bit 256-color indexed (1bit transparency)
24x24 4bit 16-color indexed (1bit transparency)
16x16 32bit RGBA
16x16 8bit 256-color indexed (1bit transparency)
16x16 4bit 16-color indexed (1bit transparency)

Supposedly, the 256x256 png-compressed size should be ignored on
platforms that do not support it -- but maybe that's causing your
problem.  Try the attached version, which omits the 256x256 resolution.

--
Chuck



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