Drag/drop and Add-ins

[Ian Mitchell]

I'm writing an Add-in which needs to drag items from the Project Browser into a treeview control, which is inside a custom control.
I've enabled the control for drag/drop, but none of the dragover etc events fire. All I get is the 'there is no current diagram to perform this operation...' message from EA.
Does anyone have some example code for making d/d work in this context ?

[fwoolz]

I would be very interested in seeing this myself, since I'm working on an add-in with a custom control parked in an EA tab that has a tree view as well... right now I'm adding nodes to the tree (requirement elements and packages) using toolbar and context menu event handlers; drag-and-drop from the Project Browser would be even better.

BTW, the context menu/toolbar/menu bar approach is an alternative to drag-'n-drop if it turns out d&d isn't supported. There isn't an EA automation interface broadcast event AFAIK for custom tab controls. Sparx should consider adding this along the lines of the VBA "MarkerEvent" in Office apps, which allows otherwise invisible events to be passed up to an add-in.

Fred W

[fwoolz]

Feature request sent!

[fwoolz]

BTW - EA does have a pair of broadcast events - EA_OnOutputItemClicked/ DoubleClicked that fire in response to clicks on a custom view, but no generic "OnOutputItemEvent" that could, conceivably, respond to arbitrary tab events.

Fred W

[Geert Bellekens]

Ian, Fred,

I think the new EA version 8 might be of interest to you.
They have added some new events, and a new addin docked window feature.

Geert

[stao]

in the custom window (c# usercontrol) the drag & drop events doesnt fire as well. At least i cant get it to work.
Any one has experiences with that?

[Geert Bellekens]

No, I haven't tried it yet, but I was planning to in the future.
Have you asked Sparx support yet?

Geert

[Ian Mitchell]

Yes -I have some experience of it. Nothing good. I have asked Sparx for drag/drop support through as many channels as possible, but interestingly, no response.
If any Spaxians are listening-in, this really would be of huge benefit to add-in/extension writers: users expect drag/drop because of their experiences in all other UIs they use, so when an EA add-in arrives without d/d, our stuff looks a bit lame.