LiveCode Forums.

Hi, New to the Revolution trying to get my head around the syntax, I normaly program web sites with PHP.

I'm trying to mimic a grid by creating multiple rows of field boxes.
The number of rows will be determined by the number of rows in a database.

So far I have this: (testing with preset values from a button action)


on mouseUp

put 100 into xpos
put 100 into ypos
put 1 into dbdfieldscountstart
put 4 into dbfieldscountend
put 5 into dbrowscount


repeat with dbrows = 1 to dbrowscount

repeat with dbfields = dbdfieldscountstart to dbfieldscountend
create field dbfields
set the location of card field dbfields to xpos,ypos
set the width of card field dbfields to 50
set the height of card field dbfields to 20
add 50 to xpos
end repeat

put 100 into xpos
add 30 to ypos
put dbfieldscountend into dbfieldscountstart
put 8 into dbfieldscountend
end repeat


end mouseUp


This creates the rows but removes each row during the next repeat which I do not understand?

Also the initial created field box remians in situ?

You may be asking 'why dosn't he use the field table?' - I want to easily specify backround colours of individual fields dependent on content. Looking through the docs and searching the forums this does not seem possible....apart from this it's also a good exercise for me.

Any help will be much appreciated.

Andy

I've done similar things before, like when I made a color palette program that needed 256 squares for 256 colors. Here's basically what I did:
There might be better ways to do this, but this is just how I did something like this before.

You could also go so far as to remove the 3d borders and make a single line border around each, then also make your grid a group, so that if it gets too big, you can size the group, and your fields in it are scrollable.

Hi Garrett

Thanks, that really helps.

Very impressed with the response to my first call for help.

Andy

AndyP

Don't get into the situation I had experimenting
with something similar. I was cloning a small
graphic and trying various methods - and using
different names for them.

If you don't have a way to delete the generated
fields they pile up and when you get to 2,000 or
so (very easy to do) the Inspector will give an error
of "Too many objects to display".

Very disconcerting (and time-wasting) to say the least.

I had to knock out a script (party guessing the
various names I'd given them ) and run it
repeatedly in a loop until I reduced them to a
number which didn't upset the Inspector.

Thanks bjb007

Is there a way to delete all the field objects prior to creating the next batch?

If you name them something0001, something0002 etc
the you can do

repeat with i = 1 to 1000
if exists(field ("something"&i)) then
delete field ("something" & i)
end if
end repeat

(just from memory)

I had multiple copies with the same names (Rev
doesn't seem to mind) so I had to put all the
above in another loop (1 - 99) to get rid of them
all.

Even if your app doesn't need a "Reset" button you
could put one on just for getting rid of the rubbish and
remove it when you've got it sorted.

There's also a plug-in which can handle up
to 10,000 objects. It was mentioned in one
of the responses to my query on this subjet.

Just had a look - it's called RevNavigator from
www.inspiredlogic.com/navigator.

Thanks bjb007