Gtk.TextBuffer::begin-user-action

function callback(text_buffer, ):void;

The ::begin-user-action signal is emitted at the beginning of a single user-visible operation on a Gtk.TextBuffer.

See also: Gtk.TextBuffer.prototype.begin_user_action, Gtk.TextBuffer.prototype.insert_interactive, Gtk.TextBuffer.prototype.insert_range_interactive, Gtk.TextBuffer.prototype.delete_interactive, Gtk.TextBuffer.prototype.backspace, Gtk.TextBuffer.prototype.delete_selection.