Hi all,

I am very new to React. I am trying to find a simple example of how to create a simple listview.

I think this is called a listbrowser in React.

I am attemting to display a list that looks like this:

1 text for line number 1 up to 70 characters wide
2 text for line number 2 up to 70 characters wide
3 text for line number 3 up to 70 characters wide
Etc.

My goal is to read each line of text from an external text file, and add it to the list.

Please note:
I have already figured out how to do this with MUI using rxMUI.
I have also figured out how to do this using the viewlist function in rexxtricks.library.

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redfox

Last edited by redfox on 27-Nov-2019 at 05:01 AM.
Last edited by redfox on 27-Nov-2019 at 04:59 AM.

It is pretty straightforward. There is an example in http://aminet.net/package/dev/gui/ClassAct2Demo and you could also look at the code of open source ReAction applications like http://aminet.net/package/util/misc/ReportPlus .

Last edited by Minuous on 27-Nov-2019 at 01:51 PM.
Last edited by Minuous on 27-Nov-2019 at 01:50 PM.
Last edited by Minuous on 27-Nov-2019 at 01:50 PM.

@redfox

Here are a few resources to assist with development using ReAction:

https://wiki.amigaos.net/wiki/ReAction

http://www.os4depot.net/index.php?function=showfile&file=document/development/reactionguide.lha

https://wiki.amigaos.net/wiki/AmiWest_Lesson_4 - Video of this lesson - https://youtu.be/6bHYHJu9-7o

Further development assistance can also be found at http://www.os4coding.net and http://forum.hyperion-entertainment.com/

@redfox

datetime_docky,lha uses for its reminders a listbrowser list, sources are included on archive.

@Minuous
@Sbaitso
@jabirulo

Thanks for your suggestions. Perhaps I will have more time in the new year to go through the examples and documentation. Unfortunately, most of the examples are way more complicated than what I actually need, and some examples do not work on my system.

Unfortunately, I do not know C or C++ or whatever language you guys use for programming.

Perhaps, I need an easy to understand introduction to Amiga programming that explains tags, taglists, tagstems, etc. And explains the options available for each tag. For example, how do you select the monospaced font instead of the proportional spaced font that seems to be used by default for all text inside a window.

I have been using ARexx for several years now, and I have been very happy to find some good helper programs and libraries that allow me to do more complicated stuff as I continue to learn.

I have also used ProAction to help me create a nice React GUI, but I can't find an example with a listbrowser (to view a list containing lines of text).

---
redfox

Last edited by redfox on 11-Dec-2019 at 01:35 AM.
Last edited by redfox on 11-Dec-2019 at 12:35 AM.

@redfox

You would use the OpenDiskFont() function to get a pointer to the TextAttr structure, then use that with the GA_TextAttr tag when you create the listbrowser gadget.

To fill up the listbrowser, you call AllocListBrowserNode() once for each row and add them into a List with AddTail() or similar, then you use that with the LISTBROWSER_Labels tag when you create the listbrowser gadget.

A list of all tags that are understood is at https://wiki.amigaos.net/amiga/autodocs/listbrowser_gc.doc.txt

An introduction to tags is at https://wiki.amigaos.net/wiki/Tags

I'm not sure how taglists are supported by ARexx, maybe an ARexx programmer can help you with that.

Last edited by Minuous on 11-Dec-2019 at 02:59 AM.
Last edited by Minuous on 11-Dec-2019 at 02:54 AM.

@redfox

There is listbrowser example in the SketchBlock demo archive on os4depot.net

http://os4depot.net/?function=showfile&file=graphics/edit/sketchblock.lha

The file you need is

SketchBlock/Rexx/PrefsEditor.rexx

It's not a 'simple' example but does handle creating and free the list nodes with the ProAction helper functions.

_________________
BroadBlues On Blues BroadBlues On Amiga Walker Broad

@Minuous

Quote:

I'm not sure how taglists are supported by ARexx, maybe an ARexx programmer can help you with that.

ARExx by itself can't so it application specific. ProAction has two modes either a string

"TAG_ONE,value1,TAG_TWO,value2,TAG_DONE"

or a stem variable

stem.0 = numtags
stem.1.tag = TAG_ONE
stem.1.value = value

etc.

_________________
BroadBlues On Blues BroadBlues On Amiga Walker Broad