Ray,
Try moving your dragEnter & dragDrop to the card script (or the stack script),
this works fine for me and I can't break it…
on dragEnter
if char -3 to -1 of the dragData["files"] is among the items of
"jpg,png,gif" then
set the dragAction to "copy"
end if
end dragEnter
on dragDrop
put the dragData["files"] into tFilePath
set the fileName of img "imageViewer" to line 1 of tFilePath
end dragDrop
With this method I see the cursor change to the circle with a line through it
as soon as I drag an image onto the card, but then it changes to a green circle
with a plus sign as soon as the app can accept the drop. i.e. When the cursor
is over the (empty or not) image area.
Paul
On 2013-05-10, at 5:16 AM, Ray Horsley wrote:
> Very interesting point Jacqueline. In my case my image control displays
> nothing. I use it as a template, ultimately to make images out of what users
> drag and drops. It's the same dimensions as the stack itself. Since the
> image control displays nothing as it isn't linked (the FileName of it) to any
> file I'm not sure whether the whole thing is consider transparent pixels or
> not. Livecode doesn't seem to have a setting of transparent or opaque for
> image controls. So I've experimented with buttons giving them the same
> script as the image has:
>
> on dragEnter
> set the dragAction to "copy"
> pass dragEnter
> end dragEnter
>
> The new thing I've discovered is I can consistently break Livecode's
> accepting the drop, evidenced by the cursor turning into a circle with a line
> through it instead of a plus sign, if I drag extremely slowly right at the
> point where I stop dragging across the desktop and start dragging over the
> stack window. This happens even if I let the button overlap off the stack
> window. If I continue dragging around on top of the stack to another button
> with the same script I do get the plus sign for a cursor. Weird isn't it?
>
>
> On May 9, 2013, at 9:14 PM, J. Landman Gay wrote:
>
>> On 5/9/13 7:03 PM, Ray Horsley wrote:
>>
>>> At the end of the day I'm wondering if this should be reported as a
>>> bug. It seems like something is getting hooked in memory. It's
>>> weird that I can drag a file onto my Livecode stack (which is one
>>> large image control with the drag handlers in it) and get nothing.
>>> Then, simply continuing to drag off the stack window and right back
>>> on it fixes it.
>>
>> I wonder if it is because you are dropping onto an image. Images don't
>> register mouse events unless you click (or presumably release) on an opaque
>> pixel. It may be that sometimes you're dropping onto a transparent area and
>> then nothing will happen.
>>
>> You could test the theory by putting a big button over the card and seeing
>> if the drop is reliable there, or by always consciously dropping exactly on
>> an opaque area.
>>
>> --
>> Jacqueline Landman Gay | [email protected]
>> HyperActive Software | http://www.hyperactivesw.com
>>
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