plib-users

[Plib-users] Plib beginner questions

[Eoin D. <ed...@gm...>]

Hi, hows it going, i just started using Plib to add some PUI widgets to an
application i'm creating using GLUT and i just want to be pointed in the
right direction.

I want to design the app so that the user clicks an "Add object" button and
the dialog box opens where the user can then enter the dimensions of the
object. When the user clicks OK the dialog box should close and the object
dimensions should be added to the program.

I have it all working fine except i want a table to display the
different object that the user has created. The user should then be able to
highlight a row and hit a "Remove" button to delete an object.  What widget
should i use for this and how?

I've been trying to use the puListBox but i can get it working right, and
when i try to use the newList() functions in the callback from the OK
button in the dialog box i get a runtime error.  Is there any other widget
that might be more suitable or is there someway of getting puListBox to do
the job.

Any suggestions will be greatly appreciated, i'm totally new to this and am
getting really stuck with this problem.

Thanks,

Eoin

Re: [Plib-users] Plib beginner questions

[<coz...@gm...>]

Hi Eoin,

I'm answering just because I haven't seen another answer, and I'm
probably not the best person to answer, so I'm sorry if this message
doesn't helps.

> I've been trying to use the puListBox but i can get it working right, and
> when i try to use the newList() functions in the callback from the OK button
> in the dialog box i get a runtime error.  Is there any other widget that
> might be more suitable or is there someway of getting puListBox to do the
> job.

It looks like puListBox is the best widget for the job. This is from
http://plib.sourceforge.net/pui/index.html#puListBox :

<In this case "list" is a null-terminated array of character strings
that contain the items that go into the list box. You are responsible
for supplying this array and for making sure that it is still around
the entire time the puListBox widget is using it. The widget does not
make its own copy of the array.>

Maybe somehow the array you supplied was erased. I would check the
plib examples, compare the code to them and do things the same way it
is done there.

-Coz

Re: [Plib-users] Plib beginner questions

[Jan R. <slo...@gm...>]

Am Tue, 13 Feb 2007 19:55:40 -0300 schrieb "Eduardo Alberto Hern=E1ndez Mu=
=F1oz" <coz...@gm...>:

> Maybe somehow the array you supplied was erased. I would check the
> plib examples, compare the code to them and do things the same way it
> is done there.

Yes, I already made this mistake several times. Always double-check
that

- the last character string in your array is a pointer to NULL and
- the array is still around when you leave the creating function

Try to use a global array like this:

char *names[] =3D {"Wilma", "Fred", "Barney", NULL};

and see if your code works if you pass "names" to the puList. Or
maybe simply post us a snippet of your code, that might help with
finding the source of the error.

Kind regards,
Jan R.

--=20
Jan Reucker
email: jan dot reucker at web dot de
web:   http://www.reucker-online.de