Drag and Drop Problem

[Trevor DeVore]

On Mar 2, 2007, at 5:54 AM, Dave wrote:

> I have the following "drag" handlers in the Script of a field. It  
> all works - mostly. The problem is that sometimes the field gets  
> left with a blue border. If I pick up a file in the Finder and move  
> it onto the border turns blue (most of the time) if I then move it  
> out of the field it goes back to normal (most of the time). However  
> sometimes it just doesn't receive the dragEnter/dragLeave message.  
> This happens running under the IDE and as a Standalone.
>
> Is this anything else I need to do in order to get this to work  
> reliably? I am using an Intel Mac Pro, MacOS X 10.4.8 with god  
> knows how much RAM and  1 Terabyte of  Hard Disk Space! Lucky me! lol

Drag and drop messages in Revolution are not always balanced meaning  
you won't always received a dragLeave even though you received a  
dragEnter.  In my testing this behavior seems worse when working with  
grouped controls.

Also, events are not always received in the right order:

<http://quality.runrev.com/qacenter/show_bug.cgi?id=3599>

Personally I have stopped providing visual feedback on objects for  
drag/drop events until the engine behavior is fixed (Rev is aware of  
it).  It is too easy to break and end up with objects that are always  
highlighted (or visual feedback that does not reflect the actual  
operation that will be performed when the drop occurs).

-- 
Trevor DeVore
Blue Mango Learning Systems
www.bluemangolearning.com    -    www.screensteps.com
trevor at bluemangolearning.com