Popup Button bug??

[Bob Sneidar]

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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> 
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