MESSAGE
| DATE | 2020-12-13 |
| FROM | John Emmas
|
| SUBJECT | Re: [Hangout - NYLXS] [png-mng-implement] Do PNG files come in
|
On 11/12/2020 17:50, Bob Friesenhahn wrote:
>
> No. There is only one version of PNG files. The PNG format was not
> updated for 64-bit apps. :-)
>
> The PNG format is designed to only deal with a small bit of data at a
> time.
>
> The main thing to be aware of under Windows when porting from 32 to
> 64-bits is that the size of a 'long' type remains the same, but the
> size of 'size_t' (the size of memory that malloc may allocate) and the
> size of pointers become 64 bits. This means that additional work must
> be done under Windows in order for a ported 32-bit app to fully
> benefit from 64-bits, and care must be taken to avoid passing 64-bit
> values into 32-bit storage.
>
Many thanks for that, Bob. I've started a thread over on the Gnome
Discourse site - though I must admit, it's all a bit baffling at the
moment:-
https://discourse.gnome.org/t/building-gdk-pixbuf-as-64-bit-using-msvc/5013
Regards, John
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