Starting drag operation with a widget

[trevordevore]

Hi,

Should it be possible to start a drag operation when clicking on a widget? I haven't been successful in the past and I wonder if anything has changed or if perhaps I was doing something wrong.

[peter-b]

I think at the moment you have to start it from the widget's LiveCode Script rather than being able to start it directly from LCB.

[trevordevore]

I'm trying to start it from LCS. That is what doesn't work.

[peter-b]

I'm trying to start it from LCS. That is what doesn't work.

Hmm, that's really weird -- I swear that's how dragging widgets out from the Tools palette works (dragging on an SVG Path widget initiates the drag operation).

[trevordevore]

Okay. I'll do some more tests and try again.

[trevordevore]

I just tried this test:

1) Drag SVG icon widget onto new stack.
2) Add this script to the widget:

Code: Select all

on dragStart
   put the milliseconds
end dragStart

3) Click and drags on the widget. The milliseconds doesn't display in the message box.

The same script on a button control displays the milliseconds. I'm guessing the tools palette is using a different technique.

[LCMark]

The tools palette uses its own drag-drop (modal) loop to do its thing. This sounds like a bug in the widget host - it should still allow drag-drop stuff to be managed from script, even if widget's can't yet do so themselves.

[peter-b]

Probably best to file a bug report about this.

[LCMark]

Already done: http://quality.livecode.com/show_bug.cgi?id=17217

[trevordevore]

Thanks guys.

[LCMark]

And fixed: https://github.com/livecode/livecode/pull/3797

[pthirkell]

This seems to relate also to bug http://quality.livecode.com/show_bug.cgi?id=16930 reported in mid Feb. Glad to see quick fix thanks.