On 15/11/2013 at 07:23, xxxxxxxx wrote:
User Information:
Cinema 4D Version:
Platform: Windows ; Mac ;
Language(s) : C++ ;
---------
Hi all,
i need to do a implementation for starting a drag&drop from GeUserArea to Material Manager or over the objects. But can't found any clue how can start this operation with DragAndDrop structure. I want to same thing which is done by material manager.
Any help will welcome,
Best
On 16/11/2013 at 06:06, xxxxxxxx wrote:
If I remember correctly, this will need to be handled by a SceneHook plugin. Override the Message() method and check for these (as needed) :
MSG_DESCRIPTION_CHECKDRAGANDDROP ``MSG_MATERIALDRAGANDDROP ``MSG_DRAGANDDROP
On 16/11/2013 at 11:25, xxxxxxxx wrote:
I was curious about this. So I gave it a try myself.
But I can't get the messages to fire in my SceenHook plugin for some reason.
What else is needed for a message to execute?
Bool MySceneHook::Message(GeListNode *node, LONG type, void *data)
{
BaseDocument *doc = GetActiveDocument();
BaseObject *obj = doc->GetFirstObject();
if(!obj) return FALSE;
MaterialDragAndDrop mdd; //Create an instance of the MaterialDragAndDrop struct (class)
mdd.op = obj; //Point to this object
//if(mdd.op) GePrint(mdd.op->GetName()); //works..But prints all the time. Not just when dropping a material on the obj
if(type == MSG_MATERIALDRAGANDDROP)
{
GePrint(mdd.op->GetName()); //<---Not working! :-(
}
if(type == MSG_DESCRIPTION_CHECKDRAGANDDROP)
{
GePrint(mdd.op->GetName()); //<---Not working! :-(
}
if(type == MSG_DRAGANDDROP)
{
GePrint(mdd.op->GetName()); //<---Not working! :-(
}
return TRUE;
}
-ScottA
On 17/11/2013 at 06:05, xxxxxxxx wrote:
If that is the case, then these might only be sent to a recipient plugin 'object' (checking in its Message() method). That would mean there is no way to handle general drag-and-drop as the op intends.
On 17/11/2013 at 10:01, xxxxxxxx wrote:
Thanks, but it's very annoying to can't do it. I hope any devs can give a hand for that. I have developped a custom browser over GeUserArea but i cannot drag&drop; materials from to any where.
On 17/11/2013 at 10:05, xxxxxxxx wrote:
i forgot to say, as you know GeUserArea can detect the dropped materials...
this for getting:
case BFM_DRAGRECEIVE:
{
String string, str;
LONG type = 0;
void \*object = NULL;
C4DAtomGoal \*bl = NULL;
GetDragObject(msg,&type,&object);
if (type==DRAGTYPE_ATOMARRAY && ((AtomArray\* )object)->GetCount()==1 && ((AtomArray\* )object)->GetIndex(0))
{
bl = (C4DAtomGoal\* )((AtomArray\* )object)->GetIndex(0);
if (bl->IsInstanceOf(Mmaterial))
{
str += "Mmaterial";
}
}
On 17/11/2013 at 11:07, xxxxxxxx wrote:
^Thanks for posting that code khor.
I didn't have that one in my notes.
-ScottA
On 17/11/2013 at 13:03, xxxxxxxx wrote:
you're welcome. If it helps i can completed last part as:
case BFM_DRAGRECEIVE:
{
String string, str;
LONG type = 0;
void \*object = NULL;
C4DAtomGoal \*bl = NULL;
GetDragObject(msg,&type,&object);
if (type==DRAGTYPE_ATOMARRAY && ((AtomArray\* )object)->GetCount()==1 && ((AtomArray\* )object)->GetIndex(0))
{
bl = (C4DAtomGoal\* )((AtomArray\* )object)->GetIndex(0);
if (bl->IsInstanceOf(Mmaterial))
{
str += "Mmaterial";
}
}
else
str = str+"unknown object";
if (msg.GetLong(BFM_DRAG_FINISHED)) info("Dropped..."+str);
return SetDragDestination(MOUSE_POINT_HAND);
break;
}
On 17/11/2013 at 13:54, xxxxxxxx wrote:
Thanks again.
That handles dragging things ** to** the UA nicely.
Now we just need someone to post how to handle dragging from the UA.
-ScottA
On 18/11/2013 at 15:40, xxxxxxxx wrote:
i found a hacked way for drag from a GeUserArea to another GeUserArea. I'm testing now .
But still really need help for native method
On 23/03/2015 at 02:45, xxxxxxxx wrote:
Hello khor, did you find a solution to start a drag from a User Area? I need to do this as well, and I
have doubts it will be possible from Python if even from C++. :cry:
On 23/03/2015 at 07:59, xxxxxxxx wrote:
Hi,
I'm not sure I'm getting this right, but in order to start a mouse drag from a GeUserArea you simply call HandleMouseDrag from GeUserArea class.
I don't think the function exists in Python. Or if it does, it's at least undocumented.