It sounds to me like a scripting plugin is needed to solve this problem.

Batch file scripting. The plugin-less scripting! :-)

1. Change the reg file location to where you put batch file.
2. Change the batch file XXNotePadPPPath to your actual notepad++ path.
3. Right click on any file will do the work.

Batchfile

setlocal

FOR %%i IN (%1) DO (
echo filedrive=%%~di
echo set filepath=%%~pi
echo filename=%%~ni
echo fileextension=%%~xi

set XXFilePath=%%~di%%~pi
set XXFilename=%%~ni%%~xi
)

set XXRootPath=%XXFilePath%..\\..
set XXEngPath=%XXRootPath%\\Common\\String_CncEngs\\%XXFilename%
set XXChtPath=%XXRootPath%\\CHT\\String_CncEngs\\%XXFilename%
set XXChsPath=%XXRootPath%\\CHS\\String_CncEngs\\%XXFilename%
"C:\Program Files\Notepad++\notepad++.exe" -nosession %XXEngPath% %XXChtPath% %XXChsPath%
endlocal

While using a reg setting. This is tested and run on win10.

Registry file

setlocal
set XXNotePadPPPath="C:\Program Files\Notepad++\notepad++.exe"

FOR %%i IN (%1) DO (
echo filedrive=%%~di
echo set filepath=%%~pi
echo filename=%%~ni
echo fileextension=%%~xi

set XXFilePath=%%~di%%~pi
set XXFilename=%%~ni%%~xi
)

set XXRootPath=%XXFilePath%..\\..
set XXEngPath=%XXRootPath%\\Common\\String_CncEngs\\%XXFilename%
set XXChtPath=%XXRootPath%\\CHT\\String_CncEngs\\%XXFilename%
set XXChsPath=%XXRootPath%\\CHS\\String_CncEngs\\%XXFilename%
%XXNotePadppPath% -nosession %XXEngPath% %XXChtPath% %XXChsPath%
endlocal

Why not a very simple batch file, like below, with the comments inside ?

@echo off

if NOT %2!==! goto Proc

echo.
echo.
echo     Syntax ( 2 PARAMETERS ) :
echo.
echo.
echo         Test.bat (FIRST part of the PATH) (File_NAME)
echo.
echo.
echo.
echo     Open in NOTEPAD++, the 3 FILES in PARAMETER 2, present UNDER the folders
echo.
echo      'ENG', 'CHS' and 'CHT', which are located UNDER the path in PARAMETER 1
echo.
echo.
echo.
echo     REMARK : If any PARAMETER contains SPACE chars, SURROUND it with 2 "" chars
echo.
echo.

goto :EOF


:Proc

REM "<Installation PATH>\notepad++.exe" -nosession %1\ENG\\%2 %1\CHT\\%2 %1\CHS\\%2

• Delete, at the end, the command REM and replace the part <Installation PATH> with your full pathname to Notepad++.exe

• Save the modifications

Enjoy !

Best Regards,

guy038

It sounds to me like a scripting plugin is needed to solve this problem.

Sorry for not describiing my question clearly.

I want to open following files at the same time
C:\solution1\ENG\File.xml
C:\solution1\CHT\File.xml
C:\solution1\CHS\File.xml

Where “C:\solution1” could be “D:\solution2” and “File.xml” could be “Another.xml”
ENG CHT and CHS folder are fixed in relative location.
Both root path and file name could be varied and I can’t predict those names.

If I’ve understood what you want, you may want to look into sessions, which are “a set of files opened in Notepad++”: Save Session and Load Session functionality is built into Notepad++'s File menu. I have heard from others that if you have more than a couple sessions that you want to deal with, the Session Manager plugin (installable through the Plugins > Plugins Admin) is useful.