Thanks for the suggestion Craig. I did tinker with this some more:
So in my test field I have this script:
on mousedown whichButton
if whichButton is not 3 then exit mousedown
put the mouseLoc into ML
get lineOffset(the text of me,btn "myPopUpButton")
if it is not 0 then
--For the X coordinate: move the menu over to the left a bit so
it's under the cursor
subtract 8 from item 1 of ML
--For the Y coordinate: take the line number and multiply by
apparent line
--height of menu text and adjust so the menu pops up at the
correct line
subtract (it*19)-10 from item 2 of ML
end if
popup btn "myPopUpButton" at ML
end mousedown
Then in my hidden test popup menu, I have numbers 1 through 35. This
works until I type in a number that causes the popup menu to hit the top
of the screen. Unlike an option menu, it does not truncate itself with a
scroll arrow - it just stops at the top of the screen with the first
menu item at the top. Interesting, it will truncate with a scroll arrow
if it hits the bottom of the screen.
Any thoughts or suggestions?
Thanks,
Marty Knapp
It seems like there should be an easy way to do this, but I cannot find it. I made an
ugly workaround with a two buttons. I'm sure you can modify it to make your data entry
field do the same thing. With a popup button ("yourPopUpButton") and an action
button, try this in the action button script:
on mousedown
popup btn "yourPopUpButton"
end mousedown
on mouseup
set the screenmouseLoc to (item 1 of the loc of me + 125& ","& item 1
of the loc of me + 195)
end mouseup
Note that the screenMouseLoc is a property, whereas the mouseLoc is a function.
You will have to modify this in your own stack to account for relative
placement of the objects in question. Play around with the coordinates.
I don't know why there isn't a property for this in local window terms, as
opposed to a function. I hear that setting the loc of the cursor is considered
dicey in UI terms.
Anyway, if you set the numbers up correctly, you can see that when clicking on
the action button, a menuItem from the popup will be selected.
Now for the weird stuff. THE MOUSE NEED NOT BE RELEASED for this to work. The
mouseUp message should never be sent. So how do it know? If the mouseUp
handler is commented out, the location of the cursor is not set, Jacques, I
need an aspirin.
Anyone? This baffles me, even though it works fine.
Craig Newman
-----Original Message-----
From: Marty Knapp<martykn...@comcast.net>
To: How to use LiveCode<use-livecode@lists.runrev.com>
Sent: Thu, Apr 21, 2011 12:19 am
Subject: Popup menu& menuhistory
I have a field that I've configured to display a popup menu using a hidden
popup menu button. If a user starts to type into this field, I use a type-ahead
routine that grabs its guess from the menu items in the button. Is there a way
to set this up so that if they type something, then click for the popup menu,
for the menu to pop up at the line where this text is found (like in an option
menu)? Setting the menuhistory doesn't seem to work.
Thanks for any help,
Marty Knapp
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