How to highlight all occurrences of selected word in scintilla/scite?

Question

In Notepad++, when select a word by double click or by cursor select, all other occurrences of the word will be selected.

What is the API to call to achieve this in Win32 (C++) platform.

Answer 1

Please checkout the "MatchMarker.cxx" file in SciTE source.

Answer 2

You can set

highlight.current.word=1

in SciTEUser.properties file which can be accessed from the menu Options > Open User Options File.

More options refers to https://www.scintilla.org/SciTEDoc.html .

Answer 3

I have added my own approach to highlighting all occurrences of the current selection...

First, I added these functions to my SciTEstartup.lua script:

function clearOccurrences()
    scite.SendEditor(SCI_SETINDICATORCURRENT, 0)
    scite.SendEditor(SCI_INDICATORCLEARRANGE, 0, editor.Length)
end

function markOccurrences()
    if editor.SelectionStart == editor.SelectionEnd then
        return
    end
    clearOccurrences()
    scite.SendEditor(SCI_INDICSETSTYLE, 0, INDIC_ROUNDBOX)
    scite.SendEditor(SCI_INDICSETFORE, 0, 255)
    local txt = GetCurrentWord()
    --print "in markOccurrences()..."
    local occurrences = 0
    local flags = SCFIND_WHOLEWORD
    local s,e = editor:findtext(txt,flags,0)
    while s do
        scite.SendEditor(SCI_INDICATORFILLRANGE, s, e - s)
        occurrences = occurrences + 1
        s,e = editor:findtext(txt,flags,e+1)
    end
    print("found "..tostring(occurrences).." occurrences")
end

Then I assigned Shortcut Keys to these functions in the ScitEUser.properties files assigning highlight occurrences with "Ctrl-." and clearing with "Ctrl-,"

# from http://lua-users.org/wiki/SciteMarkWord
command.name.37.*=markOccurrences
command.mode.37.*=subsystem:lua,savebefore:no
command.37.*=markOccurrences
command.shortcut.37.*=Ctrl+.

command.name.38.*=clearOccurrences
command.mode.38.*=subsystem:lua,savebefore:no
command.38.*=clearOccurrences
command.shortcut.38.*=Ctrl+,