Hi,

I solved this problem, but discovered another one. The flavor sent by the flex panel has been changed, so that it's a text flavor instead of an URL flavor. My method couldAcceptType works now :

DragDrop::TargetResponse

AutocatDNDCustomFlavorHelper::CouldAcceptTypes(const IDragDropTarget* target, DataObjectIterator* dataIter, const IDragDropSource* fromSource, const IDragDropController* controller) const

{

     if (0 != dataIter && 0 != target)

     {

          // Check for URL Flavor in the drag

          DataExchangeResponse response = dataIter->FlavorExistsWithPriorityInAllObjects(kTEXTExternalFlavor);

               if (response.CanDo())

               {

                    return DragDrop::TargetResponse(response, DragDrop::kDropWillCopy);

               }

     }

     return DragDrop::kWontAcceptTargetResponse;

}

The problem is now in the ProcessDragDropCommand method. Here is the code :

ErrorCode AutocatDNDCustomFlavorHelper::ProcessDragDropCommand(IDragDropTarget*                               target, IDragDropController* controller, DragDrop::eCommandType                    action)

{

       // retrieve drop data

               IPMDataObject* dragDataObject = controller->GetDragItem(1);

               uint32 dataSize = dragDataObject->GetSizeOfFlavorData(kTEXTExternalFlavor) ;

     ...

}

The problem is the IMPDataObject I get is nil. There is no item in the controller. However, there were items in the CouldAcceptTypes method, in the DataObjectIterator. So, where are my items ?

I tried using a custom CDataExchangeHandlerFor, but could not really understand what its usage was for. It didn't work anyway.

Has anyone an idea ?

Regards,

Rémi

Hi Dirk,

There are two reasons for which I use GetDragItem(1) :

• It works on Windows
• The documentation in the header says it should be so :

// ---------- Content of the doc

/** Retrieve a particular drag item from the current drag

                              @param itemID IN the id of the item to retriver (almost always 1).

                              @precondition a drag must be in progress

                              @return a pointer the drag item

                    */

// ---------- Content of the doc

I tried to iterate as you say, but without any success. Is there a chance that InDesign consumes the content of my drag with one of its helpers, before mine is called ? The Flavor I use is not custom, so I thought it could be possible. The iterator on dragged objects in CouldAcceptTypes method is not empty, so my helper accepts the drop. But when it is performed (ProcessDragDropCommand method), I try to get the items from the controller, and they are absent. The GetItemCount returns -1 though.

Would you have any other idea ?

Regards

Rémi

I finally found a "solution". This one is dirty, but I could not find any other clean solution, so I use it.

The solution is the following one : In the couldAcceptTypes method, I get the first object of the DataObjectIterator, and store the itemID I retrieve from the object contained within. I store it with a dirty memcpy (No other solution, the method is declared as const).

Then, in the ProcessDragCommand, I retrieve the itemID, and then call GetDragItem with this itemID. There I finally get the item.

Why should I do such a solution ? Because the itemID on PC is alsways 1. But on Mac, the one I retrieved was something like 719531, or whatever. I don't know why.

If this solution can help someone, this will be good. If someone find a clean solution, I would appreciate to know it.

@Dirk : I tried your solution, but could not manage it to make it work. I may have done something wrongly, I don't know...

Hi Thomas,

I tried to use the flavors you mentioned, before I knew the problem with the itemID, without success at that time.

The fact is I used a static variable, but I had problem with the fact the CouldAcceptTypes method is declared as const. That's why I use the very dirty solution of the memcpy.

Rémi