popask "NO" values differ in keyboard

[PDP-8]

TinyCorePure64 10.1 :

If you aren't using a mouse to click on yes / no, but instead are using the return key OR the space key to register a "NO", they return different values.  Use TAB to navigate to "no" button.

Example:

popask using the return/enter key to register a "yes" = 1

popask using the SPACE key to register a "yes" =1

Fine.

Use the TAB key to navigate to NO button.

popask using return/enter to register "no" = 1

popask using SPACE key to register "no" = 0

So, not a showstopper, BUT in the hands of the unskilled who might just actually use the space/return keys instead of a mouse, may result in unintended actions.

[Rich]

Hi PDP-8
It seems it's not a bug:

Description

Displays a printf-style message in a pop-up box with an "Yes" and "No" button and waits for the user to hit a button. The return value is 1
if the user hits Yes, 0 if they pick No or another dialog box is still open. The enter key is a shortcut for Yes and ESC is a shortcut for No.

Note: Common dialog boxes are application modal. No more than one common dialog box can be open at any time. Requests for
additional dialog boxes are ignored.

Found here:
https://www.fltk.org/documentation.php/doc-1.1/functions.html#fl_ask

[pek]

Hi guys,
How to catch the Yes No output?
I tried

I always get No - regardless I clicked yes or no

[Rich]

Hi pek
Check out  xmessage.  It's part of  Xorg-7.7-bin.tcz. Example:

Code: [Select]

tc@E310:~$ xmessage -buttons Yes:1,No:2,Maybe:3 -print  -center "Hello, World!"
Maybe
tc@E310:~$ echo $?
3
tc@E310:~$
This tells  xmessage  to create a popup with 3 buttons, Yes, No, and Maybe.
The numbers are the exit code you want for each button. The exit code can be found in  $?
The  -print  option tells it to print the name of the button selected.
The  -center  option tells it to place the popup in the center of the screen.

Just entering  xmessage  produces a help screen.

[pek]

Hi Rich..
Sorry I was asking about popask.
I don't have xorg, only xfbdev. So I don't have xmessage either.

Back to popask..

Code: [Select]

popask
clicked yes.. gives 1and

Code: [Select]

popask
clicked no.. gives 0
How to catch that 1 or 0 so I can make and if loop?
Thanks.

[Rich]

Hi pek
When you click a button, popask exits and returns an exit code. That exit code (0 or 1) will be in the  $?  variable.

This will display the value of the exit code:

Code: [Select]

echo $?
Test it like this for No:

Code: [Select]

if [ "$?" == 0 ]

[Rich]

Hi pek
Ignore the previous post. It seems  popask  doesn't use the exit code for this. Try this:

Code: [Select]

VAR="`popask "Your text."`"The value will be in  $VAR. Those are not single quotes, they are back ticks.

[pek]

Hi Rich..
Strangely no matter if  I clicked yes or no, it always give me 0 for $?.

when I click yes

Code: [Select]

$ popask
$ 1
$ echo $?
$ 0
when I click no

Code: [Select]

$ popask
$ 0
$ echo $?
$ 0
So, it actually spitted out 1 or 0 after clicking.. But the $? always gives 0, regardless.

[Rich]

Hi pek
You missed the corrected answer I added.

[pek]

Yes, I missed this one.

Hi pek
Ignore the previous post. It seems  popask  doesn't use the exit code for this. Try this:

Code: [Select]

VAR="`popask "Your text."`"The value will be in  $VAR. Those are not single quotes, they are back ticks.

This works as intended.
Thank you very much Rich..  It's brilliant

[Rich]

Hi pek
You are welcome. Glad I could help.