Simple ScintillaEditBase edit

A minimal QMainWindow with a ScintillaEditBase central widget, demonstrating:

• a toolbar button that shows/hides the line-number margin
• block (rectangular) selection — hold Alt and drag, or use Alt+Shift+arrow keys
• block (multi-line) editing — typing while a rectangular/multiple selection is active edits every selected line at once

Running

From the repo root, after uv sync:

uv run python examples/simple_scintilla_base_edit/main.py

Source

examples/simple_scintilla_base_edit/

Screenshots