Thanks for your detailed answers @ferdinand !
At night, I suddenly had a flash of inspiration and found a simpler solution, use html tags:

IDS_PLUGIN_HELP "description about......<br><b>Ctrl: </b> do something...<br><b>Alt: </b> do something...

Cheers~
DunHou

Thanks for your tips!

@ferdinand said in How to start a new line in plugin help with localization?:

I am personally also not sure it is a good idea to allow users putting control characters into strings, primarily due to whitespace

I want to add some shortcut description to plugin like:

Plugin Name
description about.....
Alt : do something...
Shift : do something...

do you have suggestions about this case?

Cheers~
DunHou

Hey community,

I want to add plugin help (or tooltips), I can use embed string for \n, it works fine. but when I use c4d resource files (c4d_strings.str), it not worked, how can I fix this?

I can not paste imgs, (Something went wrong while parsing server response)
See Move Tool in c4d, it has 3 lines.

Cheers~
DunHou

Hi SDK team,

I notice that webview in python only have few api but without functions such as ExecuteJavascript or SetWebMessageCallback and the SetURLCallback is diffrent form C++, at least that's what the document says.

Do we have plans to add corresponding functions in Python APIs?
Or, on the existing basis, how do you suggest implementing data processing from C4D ->web ->C4D？e.g. Read the selected object, click the button in the webview, and rename the selected object.

Cheers~
DunHou

Timer should return None:

    def Timer(self, msg: BaseContainer) -> None:
        """
        If you subscribe to timer events using :meth:`SetTimer` (x), this function is called every x'th millisecond.
    
        :type msg: BaseContainer
        :param msg: The raw timer message.
        """
        pass

@ferdinand Thanks for your great examples! Very helpful!

Thanks for @ferdinand awesome answer!
I found DescLevel and DescId always confused to me, but them do can access more than simple set item, time to dive deeper to the DescLevel part

Cheers~
DunHou

Hey community,

This my first dive into graphview node, sorry if this is a stupid basic question.

I want to set condition node input port (GvPort) value, but it seems I can not do this via __settitem__ / SetParameter, is this is a limit or I do it in wrong way?

Cheers~
DunHou

import c4d

def iterateNodes(node):
    while node:
        description = node.GetDescription(c4d.DESCFLAGS_DESC_0)
        data: c4d.BaseContainer
        pid: c4d.DescID
        for data, pid, _ in description:
            value: any | None = None
            try:
                value = node[pid]
            except:
                value = "Inaccessible in Python"
            
            if str(data[c4d.DESC_NAME]).startswith("Input"):
                print(f"\tInput '{data[c4d.DESC_NAME]}'(c4d.{data[c4d.DESC_IDENT]}) = {value} type: {type(value)}")
                
        
        node[2000, 1001] = 2 # TypeError: __setitem__ got unexpected type 'int'.
        node.SetParameter([2000, 1002],2,0) # no error but not worrk.
        print(node[2000, 1001].GetDataInstance()) # AttributeError: parameter access failed
        
        if node.IsGroupNode():
            iterateNodes(node.GetDown())

        node = node.GetNext()

def main():
    # Checks if selected object is valid
    if op is None:
        raise ValueError("op is none, please select one object.")

    # Retrieves the xpresso Tag
    xpressoTag = op.GetTag(c4d.Texpresso)
    if xpressoTag is None:
        raise ValueError("Make sure the selected object get an Xpresso Tag.")

    # Retrieves the node master
    gvNodeMaster = xpressoTag.GetNodeMaster()
    if gvNodeMaster is None:
        raise RuntimeError("Failed to retrieve the Node Master.")

    # Retrieves the Root node (the Main XGroup) that holds all others nodes
    gvRoot = gvNodeMaster.GetRoot()
    if gvRoot is None:
        raise RuntimeError("Failed to retrieve the Root Node.")

    # Iterates overs all nodes of this root node.
    iterateNodes(gvRoot)


if __name__ == '__main__':
    main()

I think you need to override RenderEngineCheck to false, the document said:

Bool MyRenderer::RenderEngineCheck(const BaseVideoPost* node, Int32 id) const
{
  switch (id)
  {
    case RENDERSETTING_STATICTAB_MULTIPASS:
    case RENDERSETTING_STATICTAB_ANTIALIASING:
    case RENDERSETTING_STATICTAB_OPTIONS:
    case RENDERSETTING_STATICTAB_STEREO:
      return false;
  }
 
  return true;
}

Cheers~
DunHou

@ferdinand love the new mxutils functions, Great work!

btw, python SDK change notes seems link to C++ docs.

Cheers~
DunHou

Hey @ferdinand , thanks for your information, Iterate graph is one of the solutions to listen to name change, but what I want is the "state" of any text input.

As I had posted on the beta forums (Typing software issue with Cinema 4D.), if someone used non-Latin languages, like Chinese for example, If you use a typing software like IME( Mircosoft Pinyin ), it should ship an English input. When we want to change something like an object name, it will set the typing to English mode. It is very annoying when you have tons of objects to rename one by one.

So I wonder if I can get the "typing mode" so I can set the IME always in Chinese mode when I input a text, and keep in English when not typing text to use shortcuts.

I am a very stupid beginner in C++, but you know what I mean. I try to use GetGUIThreadInfo and GUI_CARETBLINKING to get the text cursor, but it seems not work.

Hope it is clear.

Cheers~
DunHou

Hey community.

I wonder if we can get the text input event in Cinema like this. That is to say, when pressing the keyboard, it is the action of inputting text.

Another corresponding state is the shortcut key state, such as pressing C to collapse a certain object.

How can I get this state via Python or in C++?

Cheers~
DunHou

Thanks @ferdinand for your great solution!

Cheers~
DunHou

Hey @ferdinand ,

thanks for details.

Cheers~
DunHou

---

About forum, I can get notification about my own topic, And I clear all the cache, but nothing changed.

After I tried to reset my account settings manually, then it worked as expected.

Hey @ferdinand ,

Thanks for your answer, unfortunately, the answer is the same as I thought, and I am powerless to do anything about it. I can only wait for the exposed parameters.

Based on your suggestion, there may be many issues, and it is not worth spending a lot of time debugging them. Fortunately, this is not a very urgent task.

Cheers~
DunHou

Hey @ferdinand,

Thanks for your tips! Disabled validateAbsolutePaths with lazy paths can also work in this case, but if you interested, here is the console without disabled:

I know third party APIs are not supported, just want to know if it is possible due to Arnold. It looks like it is due to my poor knowledge

And as I know, Arnold has demo plugin that only has watermark on render, I use the demo to create plugins and it it worked as same as the full version.

Cheers~
DunHou

Traceback (most recent call last):
  File "scriptmanager", line 19, in <module>
  File "C:\Program Files\Maxon Cinema 4D 2025\resource\modules\python\libs\python311\maxon\frameworks\nodes.py", line 548, in ApplyDescription
    res: DataDictionary = GraphDescription._ApplyDescription(
                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Program Files\Maxon Cinema 4D 2025\resource\modules\python\libs\python311\maxon\decorators.py", line 495, in Auto
    ExecStaticMethod(*args)
RuntimeError: The node attribute reference '>output.r' (space: 'com.autodesk.arnold.nodespace', lang: 'en-US', node: 'com.autodesk.arnold.shader.image') is not associated with any IDs. [graphdescription_impl.cpp(2003)]
In:
{ <- Error in this scope ->
   $type: #~.image
   #<filename: asset:///file_2e316c303b15a330
   #<multiply -> #>output.r: {

     $type: #~.image
     #<filename: asset:///file_2e316c303b15a330
  }
} [graphdescription_impl.cpp(203)]

---

I test on a brand new Macbook, and refresh my PC browser, and try to use private mode. None of them worked, but the notification of my question does show in the Ring icon, but the sort does not work. not sure about UNREAD, but I do miss the recent topic.

Hey community,

I want to get the explicit render engine name of the default import plugin but not the index, can I do this?

e.g. I want to set the importor to Standard or Redshift, but if I remove some renderer like CentiLeo, the index of Standard will changed.

Cheers~
DunHou

Hey @ferdinand ，

I notice that GraphDescription also have two undo steps even I create graph and insert before apply description, how can I avoid this.

the description dict is steal from GraphDescription Manual

Cheers~
DunHou

import c4d
import maxon

data = {
    "$type": "Output",
    "Surface -> outColor": {
        "$type": "Standard Material",
        "Base/Metalness": 1.,
        "Base/Color": {
            "$type": "Texture",
            "Image/Filename/Path": maxon.Url("asset:///file_eb62aff065c50a2b"),
            "Scale": {
                "$type": "Value",
                "$id": "texTransform",
                "Input": maxon.Color(2, 2, 1)
            }
        },
        "Reflection/Roughness": {
            "$type": "Texture",
            "Image/Filename/Path": maxon.Url("asset:///file_8bf49bb0b9992dbe"),
            "Scale": "#texTransform"
        },
        "Geometry/Bump Map": {
            "$type": "Bump Map",
            "Input Map Type": 0,
            "Height Scale": .2,
            "Input": {
                "$type": "Texture",
                "Image/Filename/Path": maxon.Url("asset:///file_e706df60a3a533d2"),
                "Scale": "#texTransform"
            }
        }
    }
}


def main() -> None:
    """Called by Cinema 4D when the script is being executed.
    """
    doc = c4d.documents.GetActiveDocument()
    doc.StartUndo()
    material = c4d.BaseMaterial(c4d.Mmaterial)
    node_space = maxon.Id("com.redshift3d.redshift4c4d.class.nodespace")
    graph: maxon.NodesGraphModelRef = maxon.GraphDescription.GetGraph(material, node_space, True)
    doc.InsertMaterial(material)
    doc.AddUndo(c4d.UNDOTYPE_NEWOBJ, material)
    
    maxon.GraphDescription.ApplyDescription(graph, data)
    doc.EndUndo()
if __name__ == '__main__':
    main()

Hey community,

I am working on something with GraphDescription, but seems I can not use explicit connection with Arnold, but Redshift and VRay worked as I want.
I know 3rd is not full supported, but is this a problem with SDK design or Arnold's lack of adaptation, should I ask to Arnold dev?
I tried match label/id/lazy id, but none of them work.

btw: The notification and sorting of the forum have not been fixed yet. I have also tested it on a new computer and browser

Cheers~
DunHou

this is want I want:

Code:

import maxon

desc = {
    "$type": "#~.material",
    "#<shader":
        {
            "$type": "#~.standard_surface",
            "#<base_color": {
                "$type": "#~.image",
                "#<filename": maxon.Url("asset:///file_2e316c303b15a330"),
                "#<multiply -> #>output.r": {
                    "$type": "#~.image",
                    "#<filename": maxon.Url("asset:///file_2e316c303b15a330")
                }
            }
        }
}

maxon.GraphDescription.ApplyDescription(
    maxon.GraphDescription.GetGraph(name="test"), desc)

Hi community,

I notice that I can not get the newest and unread topic, when I open the form the sort seems not worked as before, I need to changed it manually to NEWEST TO OLDEST. Has anyone else encountered a similar situation？

Cheers~
DunHou