Popup Button bug??

Bob Sneidar bobsneidar at iotecdigital.com
Mon Jan 27 16:18:19 EST 2025 

Not at all. I have a File Server Agent that uses socket communications. I first get a list of files from the user, then I query the server or a list of what I call Profiles which right now are just a name and a file path on the server. 

I want to present the client user with a list of the names of those profiles. If the user does not select a profile, either by clicking off the menu I pop up, or by hitting the escape key, then I notify the user that they must choose a profile. 

If they do choose a profile then I send the server an array with some key/values, and the file data is stored in a numbered array in the data key. Each key in the data keys is first encrypted, then tho whole of the array is arrayEncoded, then base 64Encoded before opening a socket and sending the data. 

I tried using the popup menu button but that will not work unless the popup button command is called from a mouseDown or mouseUp handler. I am making the call from a behavior script which is why I was getting the error. And besides, you can’t control the popup menu’s appearance, whereas with a field you can. Also I am anticipating having more values than can be entirely displayed by a popup menu without running out of screen real estate, so a scrolling field works much better. 

I’m curious how you would do that with native controls? 

Bob S


> On Jan 27, 2025, at 12:27 PM, Craig Newman via use-livecode <use-livecode at lists.runrev.com> wrote:
> 
> Bob.
> 
> What are you trying to accomplish that the native buttons do not do for you? The popUp command, to me, is simply a tool to invoke a display of resident menuItems that do not necessarily have to live at the button location itself, and that button not even needing to be visible.
> 
> Are you adding a lot of additional gadgetry?
> 
> Craig
> 
>> On Jan 27, 2025, at 2:01 PM, Bob Sneidar via use-livecode <use-livecode at lists.runrev.com> wrote:
>> 
>> Interesting, the dictionary didn’t mention mouseUp. But some kind of mouse up or down handler has to be what makes the call. 
>> 
>> It turns out that rolling your own blocking popup “menu” is not very straightforward. Here is what I came up with: 
>> 
>> on popupMenu pMenu, pItems, pLocation
>>  -- anything less than 3 lines and the scrollbar does not display correctly
>>  if the number of lines of pItems >3 and \
>>        the last char pItems is cr then \
>>        delete last char of pItems
>> 
>>  set the text of pMenu to pItems
>>  set the height of pMenu to \
>>        min(the formattedHeight of pMenu, 178) — for me 178 is 10 lines of formattedText YMMV
>>  set the width of pMenu to the formattedWidth of pMenu
>>  set the topLeft of pMenu to pLocation
>>  show pMenu 
>>  focus on pMenu
>>  set the hilitedLine of pMenu to empty -- because focus will auto-select line 1
>>  wait until the visible of pMenu is false with messages
>> end popupMenu
>> 
>> 
>> — in the script of a Scrolling List Field
>> local lParentCard
>> 
>> on selectionChanged
>>  put getParentCard(the long id of me) into lParentCard
>>  put the hilitedLine of me into tLine
>>  put line tLine of the text of me into tItem
>>  set the currentLocation of lParentCard to tItem — or whatever you want to do with tItem
>>  hide me
>> end selectionChanged
>> 
>> on escapeKey
>>  selectionChanged
>> end escapeKey
>> 
>> on focusOut
>>  selectionChanged
>> end focusOut
>> 
>> FUNCTION getParentCard pObjectID
>>  put offset("card id", pObjectID) into tStartChar
>>  put char tStartChar to -1 of pObjectID into tCardID
>>  return tCardID
>> END getParentCard
>> 
>> Bob S
>> 
>>> On Jan 27, 2025, at 9:39 AM, Craig Newman via use-livecode <use-livecode at lists.runrev.com> wrote:
>>> 
>>> Bob.
>>> 
>>> It works just fine in a mouseUp handler as well. I just did it. 
>>> 
>>> Craig
>>> 
>>>> On Jan 27, 2025, at 12:31 PM, Bob Sneidar via use-livecode <use-livecode at lists.runrev.com> wrote:
>>>> 
>>>> Understood. That is why I wrote, I assure everyone there *IS* a button called “mnuLocations”. As I posted later, this command can only be used in a mouseDown handler. I think I knew this many, many years ago, but I forgot. 
>>>> 
>>>> Bob S
>>>> 
>>>> 
>>>>> On Jan 27, 2025, at 9:28 AM, Craig Newman via use-livecode <use-livecode at lists.runrev.com> wrote:
>>>>> 
>>>>> Bob .
>>>>> 
>>>>> “popup” is not a command that creates a button. It only works with an existing button, opening its contents at a location of your choice. That button can be hidden, but its menu will appear anyway.
>>>>> 
>>>>> Craig
>>>>> 
>>>>>> On Jan 27, 2025, at 12:17 PM, Bob Sneidar via use-livecode <use-livecode at lists.runrev.com> wrote:
>>>>>> 
>>>>>> Hi all. 
>>>>>> 
>>>>>> I have the command: 
>>>>>> popup pMenuButton at pLocation
>>>>>> 
>>>>>> pMenuButton contains:
>>>>>> button “mnuLocations"
>>>>>> 
>>>>>> pLocation contains: 
>>>>>> 55,303
>>>>>> 
>>>>>> I am getting the error: 
>>>>>> stack "moduleCardBehavior": execution error at line 360 (subwindow: can't find stack or button), char 1
>>>>>> 
>>>>>> I assure everyone there *IS* a button called “mnuLocations”. What in the name of all <fill in the blank> is going on here??
>>>>>> 
>>>>>> Bob S
>>>>>> 
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>>>>> 
>>>>> 
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