diff --git a/reactor-plc/renderer.lua b/reactor-plc/renderer.lua
index 0700ebe..9830751 100644
--- a/reactor-plc/renderer.lua
+++ b/reactor-plc/renderer.lua
@@ -70,9 +70,9 @@ end
 function renderer.ui_ready() return ui.display ~= nil end
 
 -- handle a mouse event
----@param event mouse_interaction
+---@param event mouse_interaction|nil
 function renderer.handle_mouse(event)
-    if ui.display ~= nil then
+    if ui.display ~= nil and event ~= nil then
         ui.display.handle_mouse(event)
     end
 end
diff --git a/reactor-plc/startup.lua b/reactor-plc/startup.lua
index bd40fce..afe733f 100644
--- a/reactor-plc/startup.lua
+++ b/reactor-plc/startup.lua
@@ -18,7 +18,7 @@ local plc      = require("reactor-plc.plc")
 local renderer = require("reactor-plc.renderer")
 local threads  = require("reactor-plc.threads")
 
-local R_PLC_VERSION = "v1.1.17"
+local R_PLC_VERSION = "v1.2.0"
 
 local println = util.println
 local println_ts = util.println_ts
diff --git a/reactor-plc/threads.lua b/reactor-plc/threads.lua
index 8470430..8dbea6d 100644
--- a/reactor-plc/threads.lua
+++ b/reactor-plc/threads.lua
@@ -257,9 +257,9 @@ function threads.thread__main(smem, init)
 
                 -- update indicators
                 databus.tx_hw_status(plc_state)
-            elseif event == "mouse_click" then
-                -- handle a monitor touch event
-                renderer.handle_mouse(core.events.click(param1, param2, param3))
+            elseif event == "mouse_click" or event == "mouse_up" or event == "mouse_drag" or event == "mouse_scroll" then
+                -- handle a mouse event
+                renderer.handle_mouse(core.events.new_mouse_event(event, param1, param2, param3))
             elseif event == "clock_start" then
                 -- start loop clock
                 loop_clock.start()
diff --git a/rtu/renderer.lua b/rtu/renderer.lua
index f79f19e..490959c 100644
--- a/rtu/renderer.lua
+++ b/rtu/renderer.lua
@@ -71,9 +71,9 @@ end
 function renderer.ui_ready() return ui.display ~= nil end
 
 -- handle a mouse event
----@param event mouse_interaction
+---@param event mouse_interaction|nil
 function renderer.handle_mouse(event)
-    if ui.display ~= nil then
+    if ui.display ~= nil and event ~= nil then
         ui.display.handle_mouse(event)
     end
 end
diff --git a/rtu/startup.lua b/rtu/startup.lua
index e2d9d94..8612d72 100644
--- a/rtu/startup.lua
+++ b/rtu/startup.lua
@@ -28,7 +28,7 @@ local sna_rtu      = require("rtu.dev.sna_rtu")
 local sps_rtu      = require("rtu.dev.sps_rtu")
 local turbinev_rtu = require("rtu.dev.turbinev_rtu")
 
-local RTU_VERSION = "v1.0.5"
+local RTU_VERSION = "v1.1.0"
 
 local RTU_UNIT_TYPE = types.RTU_UNIT_TYPE
 local RTU_UNIT_HW_STATE = databus.RTU_UNIT_HW_STATE
diff --git a/rtu/threads.lua b/rtu/threads.lua
index 9dac9f1..046525c 100644
--- a/rtu/threads.lua
+++ b/rtu/threads.lua
@@ -229,9 +229,9 @@ function threads.thread__main(smem)
                         end
                     end
                 end
-            elseif event == "mouse_click" then
-                -- handle a monitor touch event
-                renderer.handle_mouse(core.events.click(param1, param2, param3))
+            elseif event == "mouse_click" or event == "mouse_up" or event == "mouse_drag" or event == "mouse_scroll" then
+                -- handle a mouse event
+                renderer.handle_mouse(core.events.new_mouse_event(event, param1, param2, param3))
             end
 
             -- check for termination request