Dragging multiple items in treeview



  • THE POST BELOW IS MORE THAN 5 YEARS OLD. RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED

    On 13/01/2006 at 09:32, xxxxxxxx wrote:

    User Information:
    Cinema 4D Version:   9.5 
    Platform:      
    Language(s) :     C++  ;

    ---------
    Hi,

    I would like to drag multiple selected items from a treeview, to another item in the treeview.

    Currently, I can re-organize the treeview items 1 by 1, but I'm not sure how to make it work with multiple selected items.

    I am currently doing it like this

      
        virtual void InsertObject(void *root,void *userdata,void *obj,LONG dragtype,void *dragobject,LONG insertmode, Bool bCopy)  
              {  
                   BaseObject *head = (BaseObject* )root;  
                   UserData *user = (UserData* )userdata;  
                   BaseObject *op = (BaseObject* )obj;  
                     
                   switch(dragtype)  
                   {  
      
                   case MYPLUGIN_ITEM_DRAG:   
                        {  
           
                             BaseObject *dragop = (BaseObject* )dragobject;  
                             dragop->Remove();  
                             dragop->InsertUnder(op);  
                          
      
                             break;  
                        }  
      
                   }  
                   return ;  
    

    dragobject looks like its always a BaseObject, and not an AtomArray (which I was assuming if I dragged multiple selected items)



  • THE POST BELOW IS MORE THAN 5 YEARS OLD. RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED

    On 13/01/2006 at 13:13, xxxxxxxx wrote:

    Have you tried checking for DRAGTYPE_ATOMARRAY in the BFM_DRAGRECEIVE message? Since the TreeView is basically an extension of GeUserArea (note that I say 'basically'), this message should be received somewhere (either in the TreeView or in the owning GeDialog).

    There is also something else to consider from TreeViewFunctions: GenerateDragArray().

    Having not tried any multiple-object drags in a TreeView myself, I'm just offering up some suggestions. :)


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