pajamajama | SideFX

How can I create linked channels on a parm using python? Jan. 21, 2020, 8:43 p.m.

Figured it out!
I initially copied everything over using parm templates, then if you access the node.Parms you can copy everything over with parm.set(otherparm), this copies the linked channels to the previously created parmTemplates.

Here's some example code where I'm switching the parent node's parameters based on the node selection from a dynamic menu

def OnSelected():
    #get value of menu
    menuParameter = hou.node("./").parm('pattern');
    selectedId = menuParameter.eval()
    selectedName = menuParameter.menuLabels()[selectedId]
    #set selected node display
    selectedNode = hou.node("./{}".format(selectedName))
    selectedNode.setDisplayFlag(True)
    selectedNode.setRenderFlag(True)
    
    node = hou.node("./")
    
    #add folder for options
    parmGroup = node.parmTemplateGroup()
    if parmGroup.find("options") != None:
        parmGroup.remove(parmGroup.find("options"))
    parmFolder = hou.FolderParmTemplate("options", "Options")
    
   
    #copy parm templates from selected node and add them to options folder
    parmTemplates = selectedNode.parmTemplateGroup().parmTemplates()
    for entry in parmTemplates:
        parmFolder.addParmTemplate(entry)      
    parmGroup.append(parmFolder)
    node.setParmTemplateGroup(parmGroup)
    
    #get actual parms (not templates) from selected node
    selectedParms = selectedNode.parms()
    newParms = node.parms()
    for newParm in newParms:
        for selectedParm in selectedParms:
            if newParm.name() == selectedParm.name():
                #matching template, set it to get linked channels
                newParm.set(selectedParm)

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How can I create linked channels on a parm using python? Jan. 21, 2020, 8:43 p.m.