gray out a setting

[sirpucna]

looking for a way to gray out a setting in Blizzards new DF setting panel.
In the past I did:

InterfaceOptionsNamesPanelUnitNameplatesMakeLarger.setFunc = function() end
InterfaceOptionsNamesPanelUnitNameplatesMakeLarger:Hide()

[LudiusMaximus]

The new settings UI is quite complicated. It reuses elements like sliders and drop downs on every page, giving it different labels. So you have to search for the one you want to disable and re-enable it when the page changes. Here is how I disabled the "Mouse Look Speed" slider with my addon DynamicCam. (The label text constant MOUSE_LOOK_SPEED by which I recognize the element could be found here: https://www.townlong-yak.com/framexm...balStrings.lua)

local mouseLookSpeedSlider = nil
local MouseLookSpeedSliderOrignialTooltipEnter = nil
local MouseLookSpeedSliderOrignialTooltipLeave = nil
 
hooksecurefunc(SettingsPanel.Container.SettingsList.ScrollBox, "Update", function(self)
 
  local foundMouseLookSpeedSlider = false
  local children = { SettingsPanel.Container.SettingsList.ScrollBox.ScrollTarget:GetChildren() }
  for i, child in ipairs(children) do
    if child.Text then
      if child.Text:GetText() == MOUSE_LOOK_SPEED then
        -- print("Found", child.Text:GetText(), MOUSE_LOOK_SPEED)
        foundMouseLookSpeedSlider = true
 
        if not mouseLookSpeedSlider then
          -- print("Disabling slider")
          mouseLookSpeedSlider = child.SliderWithSteppers
 
          if not MouseLookSpeedSliderOrignialTooltipEnter then
            MouseLookSpeedSliderOrignialTooltipEnter = mouseLookSpeedSlider.Slider:GetScript("OnEnter")
            MouseLookSpeedSliderOrignialTooltipLeave = mouseLookSpeedSlider.Slider:GetScript("OnLeave")
          end
 
          -- Change tooltip.
          mouseLookSpeedSlider.Slider:SetScript("OnEnter", function(self)
            GameTooltip:SetOwner(self, "ANCHOR_RIGHT", 0, 0)
            GameTooltip:AddLine("|cFFFF0000Disabled!|r", _, _, _, true)
            GameTooltip:AddLine("Your Addon DynamicCam lets you adjust horizontal and vertical mouse look speed individually! Just go to the \"Mouse Look\" settings of DynamicCam to make the adjustments there.", _, _, _, true)
            GameTooltip:Show()
          end)
          mouseLookSpeedSlider.Slider:SetScript("OnLeave", function(self)
            GameTooltip:Hide()
          end)
        end
 
        -- Got to make sure, the slider stays disabled.
        if mouseLookSpeedSlider.Slider:IsEnabled() then
          mouseLookSpeedSlider:SetEnabled_(false)
        end
 
        break
      end
    end
  end
 
  -- If the slider is used for something else and we have changed it before, undo the change.
  if mouseLookSpeedSlider and not foundMouseLookSpeedSlider then
    -- print("Re-enabling slider")
    mouseLookSpeedSlider.Slider:SetScript("OnEnter", MouseLookSpeedSliderOrignialTooltipEnter)
    mouseLookSpeedSlider.Slider:SetScript("OnLeave", MouseLookSpeedSliderOrignialTooltipLeave)
    if not mouseLookSpeedSlider.Slider:IsEnabled() then
      mouseLookSpeedSlider:SetEnabled_(true)
    end
    mouseLookSpeedSlider = nil
  end
 
end)

[sirpucna]

perfect!
located the string I wanted
swapped out child.SliderWithSteppers for child.DropDown, changed .Slider to .Button and all is well.

much appreciated.