-- Add into :item-texture/c_vehtex.lua
function copyToClipboard()
    if source == gui.list then
        local url = guiGridListGetItemText ( gui.list, guiGridListGetSelectedItem ( gui.list ), 2 )
        if url then
            outputChatBox("URL copied to clipboard.")
            setClipboard(url)
        end
    end
end
addEventHandler("onClientGUIDoubleClick", root, copyToClipboard)

-- Add into :texture-system/frames_gui.lua
function copyToClipboard()
    if source == gui.list then
        local url = guiGridListGetItemText ( gui.list, guiGridListGetSelectedItem ( gui.list ), 3 )
        if url then
            outputChatBox("URL copied to clipboard.")
            setClipboard(url)
        end
    end
end
addEventHandler("onClientGUIDoubleClick", root, copyToClipboard)