>> IF mode_byte=16 THEN
>>      IF file_length=32778 THEN mode_byte=0 : REMark handle as mode 
>> 4
>> END IF
>>
>
> Now now Dilwyn, not so fast !!
>
> 1) You cannot presume that if the file length is 32768 that it is 
> mode 4
> (you are forgetting about the header in the file length btw - so 
> should be
> testing 32778).  Also, as it is a cut area, it is possible that 
> another
> program could provide an area which actually is in mode 32 and just
> happens to be 32768 (or 32778) bytes
OK then,
if mode_byte> 8 and width=512 and height=256 and filelength=(10+32768) 
then mode_byte=0


> 2) Now that Xchange can work with bigger screens - can it actually 
> display
> Easel in more than 256x256 pixels and save the larger screen area??
Yes, it can display more screen area, no it can't save it. You get the 
top 32K as far as I can tell. Certainly, it remains a 32K file with 
bottom of the graph missing.

If you are in a mode 4 hires screen, xchange 3.90L seems to cope (but 
not in anything other than mode 4). If in high colour modes, the 
graphs don't always display correctly, sometimes not at all. Marcel's 
hacked version seems to work in mode 32 at least, though I haven't 
tried all the possible graph variations.

I should have mentioned that only Xchange Easel can save the CUT file 
format. Standard QL Easel can only save ordinary 32K screens.

-- 
Dilwyn Jones



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