pipe multiple files into a single batch file (using explorer highlight)

Question

I can already get a batch file to run when a user right clicks on a file type. How can I make it so that only one instance runs per highlighted group and gets all the files

Answer 1

Late to the party but here is my 2 cents. I had the same problem when trying to customise the behaviour of a 'Move to Dropbox Folder...' context menu command. I needed every file selected to be piped to a batch file to handle the processing in one instance.

After some digging I found Context Menu Launcher.

Simple enough to use. I popped singleinstance.exe in C:\Windows\system32 and created and ran a .reg file similar to below.

Windows Registry Editor Version 5.00

; Documents

[HKEY_CLASSES_ROOT\SystemFileAssociations\document\Shell\Dropbox]
@="Move to Dropbox Folder"
"Icon"="%SystemRoot%//system32//imageres.dll,-112"
"MultiSelectModel"="Player"

[HKEY_CLASSES_ROOT\SystemFileAssociations\document\Shell\Dropbox\command]
@="singleinstance.exe \"%1\" \"C:\\Move to Dropbox Folder.bat\" $files --si-timeout 400"