file associations (file types to open with npp)



  • I’m working with a reg file for a while,
    in order to create my npp associations and use it when I format/change pc/laptop etc.

    well, I found out recently that it doesn’t work, as expected at least,

    first of all, for txt files I use:

    [-HKEY_LOCAL_MACHINE\SOFTWARE\Classes\.txt]
    [-HKEY_LOCAL_MACHINE\SOFTWARE\Classes\txt]
    [-HKEY_CURRENT_USER\SOFTWARE\Classes\.txt]
    [-HKEY_CURRENT_USER\SOFTWARE\Classes\txt]
    [-HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.txt\UserChoice]
    [-HKEY_CURRENT_USER\Software\Microsoft\Windows\Roaming\OpenWith\FileExts\.txt\UserChoice]
    [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\.txt]
    "PerceivedType"="text"
    @="txtfile"
    "Content Type"="text/plain"
    [HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.txt\OpenWithProgids]
    "txtfile"=hex(0):
    [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\.txt\DefaultIcon]
    @="\"D:\\Utilities\\PortableApps\\Notepad++\\notepad++.exe\",0"
    [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\.txt\shell\open\command]
    @="\"D:\\Utilities\\PortableApps\\Notepad++\\notepad++.exe\" \"%1\""
    [HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.txt\UserChoice]
    "ProgId"="txt_auto_file"
    "Hash"="q4kw7ShKh2M="
    

    I clean them all and then I re-create from scratch,

    1. do I need all of these entries?
      also,
    2. what is this hash that is created everytime I assign npp to always open txt files? is it needed? I tried to run the above reg script on a windows 7 machine and it didn’t work (trying to open a .txt file afterwards requested that I specify which program I want it to open with), while they work on my laptop, which is windows 8.1


  • Hi.

    I understand how to edit the registry really well.
    I think it would be a nice idea to set all the file associations you want for np++ using a .reg file.

    Can you elaborate more on what it is that you are trying to do?
    Then, I can try to write something for you.



  • I want to store the associations I use to open npp with in a reg file and
    store it in the npp portable installation and use it on any pc (work/home/desktop/laptop/new pc etc.),
    if it’s possible?



  • Yes, I think this is possible using a .reg file.

    Basically, the .reg file would change the default file associations of those extensions such as .txt .md .xml and whatever extension
    to open with np++ on double click.

    This would obviously override any other file associations that other programs make also.

    You can give me a list of extensions that you want associated with np++, then I will try working on this .reg file
    when I have the time.

    See you.



  • thanks

    txt
    java
    properties
    sql
    tql
    pld
    fnc
    pkb
    pks
    prc
    trg
    tpb
    tps
    vw
    ttx
    cfg
    css
    diz
    log
    nfo
    ora
    ini
    srt
    xml
    dat
    json
    opml


  • I think I might have fixed it

    https://textuploader.com/1awt2/raw


  • actually I didn’t,
    this one:
    https://textuploader.com/1awt2/raw
    seems to work fine in windows 7,
    while this one:
    https://textuploader.com/1aw6a/raw
    seems to work in windows 8.1

    I wish they could be merged, can they?



  • @patrickdrd

    what about using a script like this?
    For setting it per machine it must run under administrative privileges .
    The FILE_EXT list would be the place to maintain your file extensions.

    import ctypes
    import ctypes.wintypes as wintypes
    from Npp import notepad, MESSAGEBOXFLAGS
    
    shell32 = ctypes.WinDLL('shell32')
    advapi32 = ctypes.WinDLL('advapi32')
    
    SHCNE_ASSOCCHANGED = 0x08000000
    SHCNF_IDLIST = 0
    
    HKEY_CURRENT_USER = -2147483647
    HKEY_LOCAL_MACHINE = -2147483646
    SUB_KEY = u'Software\Classes\{}'
    KEY_ALL_ACCESS = 0xf003f
    REG_SZ = 1
    ERROR_SUCCESS = 0x0
    
    FILE_EXT = ['.txt', '.xml']
    NPPNAME = ctypes.create_unicode_buffer(u'Notepad++_file')
    
    def main():
        result = notepad.messageBox(('YES for USER only\n\n'
                                     'NO for MACHINE\n\n'
                                     'CANCEL to abort'), 'FileExtension Registration', 3)
    
        if result == MESSAGEBOXFLAGS.RESULTYES:
            _HKEY = HKEY_CURRENT_USER
        elif result == MESSAGEBOXFLAGS.RESULTNO:
            _HKEY = HKEY_LOCAL_MACHINE
        else:
            return
    
        for extension in FILE_EXT:
            _sub_key = SUB_KEY.format(extension)
            try:
                phkResult = wintypes.HKEY()
                result = advapi32.RegOpenKeyExW(_HKEY,
                                                _sub_key,
                                                0,
                                                KEY_ALL_ACCESS,
                                                ctypes.byref(phkResult))
                if result == ERROR_SUCCESS:
                    result = advapi32.RegSetValueExW(phkResult,
                                                     None,
                                                     0,
                                                     REG_SZ,
                                                     NPPNAME,
                                                     len(NPPNAME) * ctypes.sizeof(wintypes.c_wchar))
                    if result == ERROR_SUCCESS:
                        print(u'key {} successfully set'.format(_sub_key))
                    else:
                        print(u'Aborting as error {} occured'.format(result))
                        break
    
                else:
                    print('ERROR {} opening key {}'.format(result, _sub_key))
                    break
            except Exception as e:
                print('ERROR:{}'.format(e))
            finally:
                advapi32.RegCloseKey(phkResult)
    
        result = notepad.messageBox('Should the system be informed about the changes?', 'Inform System', 4)
        if result == MESSAGEBOXFLAGS.RESULTYES:
            shell32.SHChangeNotify(SHCNE_ASSOCCHANGED, SHCNF_IDLIST, None, None)
    
    main()
    


  • looks good, but how do I run it?
    this should be a PowerShell script, right?
    can you post a batch file to call it with administrative privileges please?

    also, where is npp in this script?



  • sorry for confusion, it is a python script.
    As I read some of your posts I got the impression that you are using pythonscript plugin.



  • yes, I am, but I’m not that familiar with it, actually I’ve forgotten, so either you send me instructions or I’ll dig older posts



  • If you have the python script plugin installed, just create a new script and copy/paste the posted script.
    Save it. Restart npp as admin if you want to set the extensions on LOCAL_MACHINE key and execute the script. If it should be set under CURRENT_USER a non-admin start of npp is sufficient.



  • ok, thanks a lot, I’ll try it in the morning in both pc’s and I’ll tell you



  • it didn’t work



  • I tried both my scripts on a windows 2008r2 server and
    the windows7 script worked, the 8.1 not,
    strange that the 8.1 works on my home laptop



  • Did you get one of the possible errors or the message that key xyz has been successfully set?
    Note, you have to open the python script plugin console to see the messages.
    If the message is successfully set then I assume that the machine does not have a proper npp
    installation, means, the link Notepad++_file is either not set at all or points to a wrong path etc…



  • if you had opened my reg file(s),
    maybe you would have seen that I’m running npp portable in all the machines,
    that’s why I asked after you posted it “where is npp in this script”,

    after this post I think that specifying the npp path is needed,
    in my case it is “D:\Utilities\PortableApps\Notepad++”



  • I’ve opened the reg files but I didn’t understand what you trying to ask.
    So what would you suppose? Making a workflow like

    A.)
    Check if Notepad++_file link is found
    if found, run the script like it is now
    if not found, open a dialog and asking if such a key should be created?
    or
    B.)
    something else in mind?



  • no, can’t it be set inside the script like in a constant variable?



  • Of course ;-) - that was what I meant.
    Doing everything within the script.


Log in to reply