Open Notepad++ with file under cursor

[perab]

Hello,
I have created a button for opening the free text editor Notepadd++. However, I want to improve the concept, so when I click this button, the file on which the cursor is positioned will be opened automatically in Nodpad++. I guess that this may be utilized by appending some command swithes to the command. Anyone who knows which command switch(es) I should provide?

[Dalai]

Add parameters %P%N into the button's Parameters field.

Or, set Notepad++ as editor in Options > Edit/View > Editor for F4.

Regards
Dalai