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    Change LONG_CYCLE selected Item.

    Cinema 4D SDK
    c++ r20 windows
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    • O
      Ogers
      last edited by

      Hello,
      I am creating a CUSTOMGUI_CYCLE with my own attributes using getDDescription function. Everything goes fine until the point where I want to change the selected item. Assume that I have the following code, the Item with id 0 will be selected by default. Is there any way that I can change this? Like after a specific action the Item 1 will be selected? I tried many things but I could not find the right one. the .SetInt32(Id,value) method does not seem to work for this case as well.I also tried GetDParameter and other possible ways to do this but still could not solve this.

        BaseContainer settings = GetCustomDataTypeDefault(DTYPE_LONG);
        settings.SetString(DESC_NAME, "Drop Down"_s);
        settings.SetInt32(DESC_CUSTOMGUI, CUSTOMGUI_CYCLE);
        // add cycle elements
        BaseContainer items;
        items.SetString(0, "Item 1"_s);
        items.SetString(1, "Item 2"_s);
        items.SetString(2, "Item 3"_s);
        settings.SetContainer(DESC_CYCLE, items);
      

      Thank you.

      J H 2 Replies Last reply Reply Quote 0
      • ManuelM
        Manuel
        last edited by

        hello,

        You can set the default value you want in your Init function.
        In any case, the Cycle will show the value corresponding to the value of the parameter.

        #define MY_CYCLE_ID 1000
        
        class DefaultCycleValue : public ObjectData
        {
        	INSTANCEOF(DefaultCycleValue, ObjectData)
        public:
        
        	virtual Bool Init(GeListNode *node)
        	{
        		// set the parameter the value we want, the Custom GUI will show the corresponding line in the box.
        		node->SetParameter(DescID(MY_CYCLE_ID), GeData(1), DESCFLAGS_SET::NONE);
        		return true;
        	};
        
        	virtual Bool GetDDescription(GeListNode* node, Description* description, DESCFLAGS_DESC& flags) override
        	{
        	
        		if (!description->LoadDescription(node->GetType()))
        			return false;
        
        		const DescID* singleid = description->GetSingleDescID();
        		const DescID cid = DescLevel(MY_CYCLE_ID, DTYPE_LONG, 0);
        
        		if (!singleid || cid.IsPartOf(*singleid, nullptr))
        		{
        
        			// add the parameter as long
        			BaseContainer bc = GetCustomDataTypeDefault(DTYPE_LONG);
        
        			// set the custom GUI to a cycle.
        			bc.SetInt32(DESC_CUSTOMGUI, CUSTOMGUI_CYCLE);
        			bc.SetString(DESC_NAME, "Long Cycle"_s);
        			bc.SetInt32(DESC_SCALEH, 1);
        
        			// cycle elements
        			BaseContainer items;
        			items.SetString(0, String("Item 0"));
        			items.SetString(1, String("Item 1"));
        			items.SetString(2, String("Item 2"));
        
        			bc.SetContainer(DESC_CYCLE, items);
        
        			// icons
        			BaseContainer icons;
        			icons.SetInt32(0, IDM_COPY);
        			icons.SetInt32(1, IDM_CUT);
        			icons.SetInt32(2, IDM_DELETE);
        
        			bc.SetContainer(DESC_CYCLEICONS, icons);
        
        
        			description->SetParameter(cid, bc, ID_OBJECTPROPERTIES);
        		}
        
        		flags |= DESCFLAGS_DESC::LOADED;
        
        		return SUPER::GetDDescription(node, description, flags);
        	};
        
        
        	static NodeData *Alloc() { return NewObjClear(DefaultCycleValue); }
        };
        

        Cheers
        Manuel

        MAXON SDK Specialist

        MAXON Registered Developer

        1 Reply Last reply Reply Quote 2
        • O
          Ogers
          last edited by

          Thank you @m_magalhaes

          1 Reply Last reply Reply Quote 0
          • J
            JeffreyZimmerman @Ogers
            last edited by JeffreyZimmerman

            This post is deleted!
            1 Reply Last reply Reply Quote 0
            • H
              HectorSmallwood @Ogers
              last edited by Manuel

              Everything goes fine until the point I want to change the selected item. Assume that I have the following code, the Item with id 0 will be selected by default. Is there any way that I can change this? Like after a specific action the Item 1 will be selected?
              event to determine when the selected item in the ListBox is changed.

              1 Reply Last reply Reply Quote 0
              • ManuelM
                Manuel
                last edited by Manuel

                hello @HectorSmallwood

                @HectorSmallwood said in Change LONG_CYCLE selected Item.:

                Assume that I have the following code, the Item with id 0 will be selected by default. Is there any way that I can change this? Like after a specific action the Item 1 will be selected?

                That's exactly what the code is doing in the Init() function using SetParameter(). You change the value of the parameter, the UI show the item with that value in the list. So by default the parameter value is 1 so the UI show the item with the value 1 "Item 1"

                If you want to change the item somewhere else, same thing just change the value of the parameter, the ui will follow.

                node->SetParameter(DescID(MY_CYCLE_ID), GeData(1), DESCFLAGS_SET::NONE);
                

                I'am adding an answer here as it is a related. But for your second question if the answer doesn't fit your need, please open a new thread and post your question in a new thread. That will help us to keep things organized.

                @HectorSmallwood said in Change LONG_CYCLE selected Item.:

                event to determine when the selected item in the ListBox is changed.

                If i understand the question, you have to check for MSG_DESCRIPTION_CHECKUPDATE message type in the Message() function as follow.

                virtual Bool Message(GeListNode* node, Int32 type, void* data) override
                	{
                		switch (type)
                		{
                			case MSG_DESCRIPTION_CHECKUPDATE :
                			{
                				DescriptionCheckUpdate* dcu = static_cast<DescriptionCheckUpdate*>(data);
                				if (dcu == nullptr)
                					return true;
                
                				maxon::Int32 id = (*(dcu->descid))[0].id;
                				if (id == MY_CYCLE_ID)
                				{
                					DiagnosticOutput("Cycle have been changed");
                						// ... do Something
                				}
                				break;
                			}
                		}
                		return true;
                	};
                

                Cheers
                Manuel

                MAXON SDK Specialist

                MAXON Registered Developer

                W 1 Reply Last reply Reply Quote 0
                • W
                  williamgutierrez @Manuel
                  last edited by williamgutierrez

                  This post is deleted!
                  1 Reply Last reply Reply Quote 0
                  • CairynC
                    Cairyn
                    last edited by

                    Am I the only one who sees three posts in this thread defaced by insertions of spam into a valid post?

                    1 Reply Last reply Reply Quote 2
                    • M
                      mogh
                      last edited by

                      yesterday I saw 2 small triangles which i didn't unfold .... today they are gone... addblocker at work ?

                      1 Reply Last reply Reply Quote 0
                      • ManuelM
                        Manuel
                        last edited by Manuel

                        hi,

                        thanks for pointing those spam. I cleaned them

                        Cheers,
                        Manuel

                        MAXON SDK Specialist

                        MAXON Registered Developer

                        1 Reply Last reply Reply Quote 0
                        • W
                          walthenry
                          last edited by

                          Thanks for guiding

                          Regards,
                          Folexin

                          1 Reply Last reply Reply Quote 0
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