[注册表类] 注册表转bat后怎么把路径改为当前路径？

@echo off

set "MPC-Be=%~dp0mpc-be"
set "MPC-BeReg=%MPC-BE:\=\\%"
if "%1"=="" (
    call :Main
) >nul 2>nul
exit /b
::以管理员身份运行
:Main
    title 文件关联 
    fltmc >nul || mshta vbscript:CreateObject("Shell.Application").ShellExecute("%~dpnx0","%*",,"runas",1)(window.close) && exit /b


::执行创建注册表关联项
:Install
    (
        echo Windows Registry Editor Version 5.00
        call :RegAssoc mp4  MPC-BE 59 mpciconlib
    ) >"%Temp%\Install.reg"
    reg import "%Temp%\Install.reg"
    del /f "%Temp%\Install.reg"

goto :eof

::关联相关文件类型
:RegAssoc :: <%1=Ext> <%2=ExeName> <%3=IconIndex图标编号> <%4=图标文件名>
    echo [HKEY_CLASSES_ROOT\MPC-BE.%1\DefaultIcon]
    echo @="\"%MPC-BeReg%\\%4.dll\",%3"
    echo [HKEY_CLASSES_ROOT\MPC-BE.%1\Shell\Open\Command]
    echo @="\"%MPC-BEReg%\\%2.exe\" \"%%1\""
    echo [HKEY_CLASSES_ROOT\.%1]
    echo @="MPC-BE.%1"
goto :eof
::echo @="\"%MPC-BeReg%\\%4.dll\",%3"  本句意为图标在以%4为名称的.dll文件内
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