[Lazarus] High-DPI TImageList

[Ondrej Pokorny]

On 05.02.2018 14:07, Werner Pamler via Lazarus wrote:
> The high-DPI imagelist adds a new entry to the lfm file, "BitmapAdv". 
> Is this really absolutely necessary in all cases, for example if the 
> imagelist contains only standard-resolution images? The problem is 
> that once a form with an image list has been opened by Laz trunk it 
> cannot be opened by Laz 1.8 or older any more without an error message 
> and the need to remove this new entry.  In particular, this is an 
> issue for third-party components where the author must be very careful 
> to save demo forms with Laz 1.8, not with trunk.
>
> I remember I had the same argument with the addition of 
> "Application.Scaled := true" to the lpr file, but here portability 
> could kept by putting it into an {$if lclversion >= 1090000} 
> directive. In the lfm files, however, such directives are not allowed.

No, it's not needed if no extra resolutions are stored. I'll check if it 
can be omitted (it's a manually added entry and not a normal property). 
If not, I'll add an ignore entry for 1.8.2.

Ondrej