PATCH/RFC: imagelist rewrite to use N x M grid

Marcus Meissner marcus at
Tue Nov 29 14:37:01 CST 2005

On Tue, Nov 29, 2005 at 01:24:47PM -0700, Vitaliy Margolen wrote:
> Tuesday, November 29, 2005, 12:58:55 PM, Marcus Meissner wrote:
> > On Mon, Nov 28, 2005 at 09:55:57PM -0600, Dustin Navea wrote:
> >> Hmmmm.  I havent tested due to sys overhaul, but it seems that this 
> >> should work.  Just out of curiosity, what was the reason for picking 4
> >> as the magic number?
> > Randomness. Any number could be used.
> I think native uses 4. As I remember, Delphi understands only 4xN.
> So when you edit an imagelist in IDE and save it, Delphi could not use
> produced output and was crashing/displaying corrupted images.

So our current implementation has problems?

Is this the Read/Write to/from IStream interface to imagelists?
> > However I got another suggestion to just store all the images in
> > an array (of HBITMAP or similar).
> >
> > Does anything speak against doing this instead of having this 
> > large bitmap and cutting out the images?
> The problem is that you can't read it as-is from the stream. Also you
> will have to put it back together into a single bitmap to save it. Also
> some ops require operation on the whole image list. And last but not
> least, it will be much slower, as you will have to create/delete DCs each
> time you need to use imagelist.

Ah ok.

Ciao, Marcus

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