Create a shortcut to insert a text

pspad:

RANZI:

Indeed, I would like to keep reals tabs by default and use spaces for a lot of format like : .h, .c, .cc, .cpp, .klx(custom extension)

Set spaces as default inte program settings / Editor
Individual real tabs base on the highlighter (file type) are in
Program settings / Highlighter settings / Specification tab for C++ highlighter
The check box has 3 states - Checked - ON, Unchecked OFF, square - set as Program settings.

If you hjave individual extension, add it into existing highlighter, for this case I guess it will be new extension for C++ highlighter. Again on the same place into file masks

Splendid, you are the best developper