In GRAB control

[Tore Nilsen]

Try on mouseMove instead of on grab:

on mouseMove
if the mouse is down — to make sure you are holding on to something
your code goes here
end if
end mouseMove


Tore

> 15. okt. 2017 kl. 19:07 skrev Richmond Mathewson via use-livecode <use-livecode at lists.runrev.com>:
> 
> If you try that "code snippet" I think you will get terribly stuck: that's a question.
> 
> Richmond.
> 
> On 10/15/17 8:04 pm, Tom Glod via use-livecode wrote:
>> richmond, are you asking a question or giving us code snippet to use?
>> 
>> On Sun, Oct 15, 2017 at 1:01 PM, Richmond Mathewson via use-livecode <
>> use-livecode at lists.runrev.com> wrote:
>> 
>>> Imagine a stack with a picture of an orange in its centre . . .
>>> 
>>> The picture: img "arancia", contains the following script:
>>> 
>>> on mouseDown
>>>       grab me
>>> end mouseDown
>>> 
>>> so the end-user can move the picture wherever they want
>>> all over the stack.
>>> 
>>> HOWEVER . . . I want to know whether their initial movement is to the
>>> left, right, upwards or downwards.
>>> 
>>> Fantasy time again [pseudocode]:
>>> 
>>> on Grab
>>>     put the left of me into LEFT1
>>>     put the top of me into TOP1
>>>     wait 2 ticks
>>> put the left of me into LEFT2
>>>     put the top of me into TOP2
>>>      if LEFT2 < LEFT1 then
>>>         put "LEFT"
>>>      else
>>>         put "RIGHT"
>>>      end if
>>>      if TOP2 < TOP1 then
>>>          put "UP"
>>>      else
>>>          put "DOWN"
>>>      end if
>>> end Grab
>>> 
>>> Richmond.
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>>> 
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