diff --git a/Zframework/init.lua b/Zframework/init.lua
index 8074dd8a..103415b7 100644
--- a/Zframework/init.lua
+++ b/Zframework/init.lua
@@ -215,7 +215,7 @@ function love.touchreleased(id,x,y)
     end
 end
 
-local fnKey={NULL,NULL,NULL,NULL}
+local fnKey={NULL,NULL,NULL,NULL,NULL,NULL,NULL}
 local function noDevkeyPressed(key)
     if key=="f1"then      fnKey[1]()
     elseif key=="f2"then  fnKey[2]()
@@ -364,42 +364,9 @@ function love.resize(w,h)
 
     SHADER.warning:send('w',w*SCR.dpi)
 end
-local function task_autoSoundOff()
-    while true do
-        coroutine.yield()
-        local v=love.audio.getVolume()
-        love.audio.setVolume(math.max(v-.05,0))
-        if v==0 then return end
-    end
-end
-local function task_autoSoundOn()
-    while true do
-        coroutine.yield()
-        local v=love.audio.getVolume()
-        if v<SETTING.mainVol then
-            love.audio.setVolume(math.min(v+.05,SETTING.mainVol,1))
-        else
-            return
-        end
-    end
-end
-function love.focus(f)
-    if f then
-        love.timer.step()
-        if SETTING.autoMute then
-            TASK.removeTask_code(task_autoSoundOff)
-            TASK.new(task_autoSoundOn)
-        end
-    else
-        if SCN.cur=='game'and SETTING.autoPause then
-            pauseGame()
-        end
-        if SETTING.autoMute then
-            TASK.removeTask_code(task_autoSoundOn)
-            TASK.new(task_autoSoundOff)
-        end
-    end
-end
+
+local onFocus=NULL
+function love.focus(f)onFocus(f)end
 
 local yield=coroutine.yield
 local function secondLoopThread()
@@ -737,10 +704,12 @@ function Z.setCursor(func)drawCursor=func end
 
 --Change F1~F7 events of devmode (F8 mode)
 function Z.setOnFnKeys(list)
-    for i=1,7 do
-        fnKey[i]=type(list[i])=='function'and list[i]or NULL
-    end
+    assert(type(list)=='table')
+    for i=1,7 do fnKey[i]=type(list[i])=='function'and list[i]or NULL end
 end
 
+function Z.setOnFocus(func)onFocus=type(func)=='function'and func or NULL end
+
 function Z.setOnQuit(func)onQuit=type(func)=='function'and func or NULL end
+
 return Z
diff --git a/main.lua b/main.lua
index e65ff34d..6d9d2723 100644
--- a/main.lua
+++ b/main.lua
@@ -97,7 +97,10 @@ netPLY=     require'parts.netPlayer'
 MODES=      require'parts.modes'
 
 --Init Zframework
-do
+Z.setIfPowerInfo(function()
+    return SETTING.powerInfo and LOADED
+end)
+do--Z.setCursor
     local normImg=GC.DO{16,16,
         {'fCirc',8,8,4},
         {'setCL',1,1,1,.7},
@@ -123,9 +126,6 @@ do
         end
     end)
 end
-Z.setIfPowerInfo(function()
-    return SETTING.powerInfo and LOADED
-end)
 Z.setOnFnKeys({
     function()MES.new('check',PROFILE.switch()and"profile start!"or"profile report copied!")end,
     function()MES.new('info',("System:%s[%s]\nluaVer:%s\njitVer:%s\njitVerNum:%s"):format(SYSTEM,jit.arch,_VERSION,jit.version,jit.version_num))end,
@@ -145,6 +145,44 @@ Z.setOnFnKeys({
     function()for k,v in next,_G do print(k,v)end end,
     function()if love["_openConsole"]then love["_openConsole"]()end end,
 })
+do--Z.setOnFocus
+    local function task_autoSoundOff()
+        while true do
+            coroutine.yield()
+            local v=love.audio.getVolume()
+            love.audio.setVolume(math.max(v-.05,0))
+            if v==0 then return end
+        end
+    end
+    local function task_autoSoundOn()
+        while true do
+            coroutine.yield()
+            local v=love.audio.getVolume()
+            if v<SETTING.mainVol then
+                love.audio.setVolume(math.min(v+.05,SETTING.mainVol,1))
+            else
+                return
+            end
+        end
+    end
+    Z.setOnFocus(function(f)
+        if f then
+            love.timer.step()
+            if SETTING.autoMute then
+                TASK.removeTask_code(task_autoSoundOff)
+                TASK.new(task_autoSoundOn)
+            end
+        else
+            if SCN.cur=='game'and SETTING.autoPause then
+                pauseGame()
+            end
+            if SETTING.autoMute then
+                TASK.removeTask_code(task_autoSoundOn)
+                TASK.new(task_autoSoundOff)
+            end
+        end
+    end)
+end
 Z.setOnQuit(destroyPlayers)
 
 --Load settings and statistics