批處理修改注冊表環境變量Path后立即生效使用三方dllcallexe注冊表修改環境變量Path后立即生效。批處理Reg命令修改系統變量后使它立即生效。刷新系統使系統環境變量修改立即生效。腳本配置JAVA_HOME環境變量后刷新使其立即生效。

::廣播消息，通知修改了環境變量
dllcall.exe SendMessageTimeoutA,0xffff,0x1a,0,Environment,2,5000,0,user32.dll
nclick="copycode($('code0'));">復制代碼

::簡短寫法
dllcall SendMessageTimeoutA,65535,26,,Environment,2,4444,,user32
nclick="copycode($('code1'));">復制代碼

適用：一些軟件需要用到系統環境變量，如：JAVA要用到JAVA_HOME，數據庫要用到Path等。綠色版軟件通常用批處理REG命令修改注冊表，但問題是不能直接生效，需要重啟電腦。運行以上dllcall命令成功廣播消息后，再打開的軟件載入的是新的環境變量Path/JAVA_HOME等。即對注冊表【HKLMSYSTEMCurrentControlSetControlSession ManagerEnvironment】項里的修改有效。----dllcall.exe----簡介：dllcall.exe是一個調用.dll中函數的32位第三方工具。版本：v1.0.3.5，大小：4096字節。帖子：又一個 dllcall.exe//三方詳情介紹http://bbs.bathome.net/viewthread.php?tid=26870下載：搜索本論壇http://www.bathome.net/s/tool/index.html?key=dllcall或使用如下批處理，生成dllcall.exe

::生成dllcall_exe.bat::調用DLL函數的dllcall.exe:v1.0.3.5:4096B::
::實用：通過廣播設置變更的消息，刷新環境變量。
::dllcall SendMessageTimeoutA,0xffff,26,0,Environment,2,5000,,user32.dll
@echo off
cd/d%~dp0
>base64Bin.js (for /f tokens=1* delims=: %%u in ('type %~0|findstr /ib ::JS::')do echo/%%v)
for /f delims=: %%n in ('findstr /ibnc:::dllcall.cab %~0')do set N=%%n
>dllcall_base64.txt (for /f eol=: delims= %%b in ('more +%N% %~0')do echo/%%b)
base64Bin.js dllcall_base64.txt
expand -r dllcall_base64.txt.bin%_解壓文件：dllcall.ex_/dllcall.cab_%
del base64Bin.js dllcall_base64.txt dllcall_base64.txt.bin%_刪除中間生成文件_%
goto :eof
::JS:://base64_to_Bin.jsbase64編碼的.txt轉.exe/.zip/.jpg等
::JS:://獲取Hex文本文件名參數
::JS::TxtFile = Wscript.Arguments(0);
::JS::
::JS:://讀取base64文本文件
::JS::var fso = new ActiveXObject(scripting.FileSystemObject);
::JS::var HexFile=fso.OpenTextFile(TxtFile);
::JS::HexData=HexFile.ReadAll();
::JS::
::JS:://轉換中間XMLDOM對象，便于處理
::JS::var oXML= new ActiveXObject(Microsoft.XMLDOM);
::JS::var xNode = oXML.createElement(base64Data);
::JS::xNode.dataType = bin.base64;
::JS::xNode.text = HexData;
::JS:://轉Stream并寫入Bin
::JS::var Stream= new ActiveXObject(ADODB.Stream);
::JS::Stream.Type = 1;
::JS::Stream.Open;
::JS::Stream.Write(xNode.nodeTypedValue);//Bin
::JS::Stream.SaveToFile(TxtFile + .bin,2);
::JS::Stream.Close;
::dllcall.cab的base64Txt文本::dllcall.ex_:2126B::dllcall_base64.txt:2875B::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::base64結束。::
nclick="copycode($('code2'));">復制代碼

附：Win的SendMessageTimeout()消息函數簡要說明SendMessageTimeout(HWND_BROADCAST,WM_SETTINGCHANGE,0,LPARAM(Environment),SMTO_ABORTIFHUNG,5000,&MsgResult);user32.dll的SendMessageTimeout()消息函數有7個參數　1、hWnd: HWND_BROADCAST= 0xffff//廣播　2、Msg: WM_SETTINGCHANGE = 0x1a//設置更新　3、wParam: = 0　4、lPARAM: = Environment//環境變量　5、fuFlags: SMTO_ABORTIFHUNG = 2　6、uTimeout: = 5000　7、(out)lpdwResult: =0----C++函數原型----public static extern IntPtr SendMessageTimeout(IntPtr hWnd,uint Msg,UIntPtr wParam,string lParam,uint fuFlags,uint uTimeout,out UIntPtr lpdwResult);