murray@andromeda.rutgers.edu.rutgers.edu (Murray Karstadt) (08/02/89)
I want to use the choose command with info read from a field. Something
like:
choose field 1 tool
which as I understand it should read the info out of field 1. I have the
word brush on a line by itself. When I use this command I get the following
error
Can't understand arguments to command choose
I must be missing something here but I just can't see it.
thanx for any help
murray
englandr@phoenix.Princeton.EDU (Scott Englander) (08/03/89)
In article <Aug.1.15.59.20.1989.6372@galaxy.rutgers.edu> murray@andromeda (Murray Karstadt) writes: > > I want to use the choose command with info read from a field. Something > like: > > choose field 1 tool You need to use the "do" command. First assemble your command string. Then "do" the string: put "choose " & field 1 && "tool" into cmdstr do cmdstr I tried it and it works! BTW, you won't be able to do this from the message box. -- - Scott
baum@Apple.COM (Allen J. Baum) (08/04/89)
[] >In article blahblahblah (Scott Englander) report on how to choose with a variable: >> >> I want to use the choose command with info read from a field. Something >> like: >> >> choose field 1 tool > >You need to use the "do" command. First assemble your command string. >Then "do" the string: > >put "choose " & field 1 && "tool" into cmdstr >do cmdstr So, what are the rules that determine when a "Do" is necessary, and when a variable can simply be used? -- baum@apple.com (408)974-3385 {decwrl,hplabs}!amdahl!apple!baum
jm7f+@andrew.cmu.edu (Joe Melvin) (08/04/89)
regarding when the use of the "do" command is necessary and when it is not, here is one rule: try it the straightforward way. If hyperCard gets confused, use "do". I know the command is needed in some cases, but in others it seems like things should work without it. The example that has been recently discussed, "choose field 1 tool", does seem like the do command would be needed if you think about it. There is a field tool, so hyperCard probably thinks your command is starting out as "choose field" and expects the next word to be "tool", then it runs into the "1" and gets confused. Joe Melvin HyperCard Programmer & student Carnegie Mellon University
mesard@bbn.com (Wayne Mesard) (08/05/89)
In article <QYqA4By00WB3EHVWFb@andrew.cmu.edu> jm7f+@andrew.cmu.edu (Joe Melvin) writes: >regarding when the use of the "do" command is necessary and when it is >not [...] > The example that has been recently discussed, >"choose field 1 tool", does seem like the do command would be needed if you >think about it. There is a field tool, so hyperCard probably thinks your >command is starting out as "choose field" and expects the next word to be >"tool", then it runs into the "1" and gets confused. But if that were true then "choose (field 1) tool" WOULD work and it doesn't. Here's the rule: If you're trying to use a container (field, string, variable) and the description of the command in The Book doesn't indicate that a container is valid, then you have to use "do". "Choose" doesn't accept container's. It wants a keyword. (I.e., choose "field" tool -- will NOT work!) -- unsigned *Wayne_Mesard(); "We need your business, we're going out of Mesard@BBN.COM business, we'll give you the business." BBN, Cambridge, MA -Tom Waits, "Step Right Up"