Problems with PNG files

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peterbonge
Posts: 367
Joined: 25 May 2004 21:53

Problems with PNG files

Post by peterbonge »

PNG files saved with the new IrfanView v3.92 aren't shown correctly anymore (preview/thumbnail). I don't know if it is a TrackerV3 problem. Anyway all my other programs are showing these files correctly.
Regards,
Peter Bonge

My System:
Windows 11 Pro, 64-bit, German

admin
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Re: Problems with PNG files

Post by admin »

Send one per mail, please.

peterbonge
Posts: 367
Joined: 25 May 2004 21:53

Post by peterbonge »

Done.
Regards,
Peter Bonge

My System:
Windows 11 Pro, 64-bit, German

admin
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Post by admin »

Thanx, research is on the way...

Gandolf

Post by Gandolf »

You're not alone!! Even the wonderful Windows Explorer cannot display either the thumbnails or preview. Xplorer² also produces a corrupt display and, as one of Nikos' beta testers I'm not going to make him very happy!

Works with 0 compression but anything else either crashes TrackerV3 or displays very corrupted. All my other graphics programs seem to be O.K.

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Post by admin »

Gandolf wrote:Works with 0 compression but anything else either crashes TrackerV3 or displays very corrupted.
Crashes??? Which image crashes TrackerV3?

I noted that the image in question (the one peter sent me) is a 4-bit PNG which is a rare format. Photoshop for example can read but not write that format.

peterbonge
Posts: 367
Joined: 25 May 2004 21:53

Post by peterbonge »

Oh yes. Explorer has also problems with these files. And xplorer² too.
-> IrfanView is the problem!
I'll notify the author about this.
Regards,
Peter Bonge

My System:
Windows 11 Pro, 64-bit, German

Gandolf

Post by Gandolf »

Donald, I've e-mailed you the PNG that crashes my system (it's 700K so don't be worried by the large attachment - it's not a virus!!)

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Post by admin »

Thanks. Yes it looks terrible. But no crash. ACDSee has no problems with it... it's truecolor format (16M colors). I can't do anything about it, because the problem must be some incompatiblity with GDIPlus.dll... which explains why Explorer can't do it either.

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Post by admin »

admin wrote:Thanx, research is on the way...
Result: it's a GDI+ bug. Microsoft has to take over...

peterbonge
Posts: 367
Joined: 25 May 2004 21:53

Post by peterbonge »

admin wrote:Result: it's a GDI+ bug. Microsoft has to take over...
But isn't it strange that this problem occurs right after the release of IrfanView v3.92?
Regards,
Peter Bonge

My System:
Windows 11 Pro, 64-bit, German

admin
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Posts: 67067
Joined: 22 May 2004 16:48
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Post by admin »

peterbonge wrote:
admin wrote:Result: it's a GDI+ bug. Microsoft has to take over...
But isn't it strange that this problem occurs right after the release of IrfanView v3.92?
IrfanView can create files that GDI+-dependent apps cannot render correctly. But many other programs besides IrfanView can, for example ACDSee, Photoshop, InternetExplorer (!). XP native PictureViewer however cannot -- it also depends on GDI+! The pattern is clear. I don't think IrfanView is to blame.

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