delete line by Ctrl+Y, insert new line by Ctrl+Enter

src/dlangui/core/editable.d

@@ -598,6 +598,16 @@ class EditableContent {
         return TextPosition(lineIndex, lineLength(lineIndex));
 	}
 
+	/// returns text position for begin of line lineIndex
+	TextPosition lineBegin(int lineIndex) {
+        return TextPosition(lineIndex, 0);
+	}
+
+	/// returns text range for whole line lineIndex
+	TextRange lineRange(int lineIndex) {
+        return TextRange(TextPosition(lineIndex, 0), lineIndex < _lines.length - 1 ? lineBegin(lineIndex + 1) : lineEnd(lineIndex));
+	}
+
     /// returns position before first non-space character of line, returns 0 position if no non-space chars
     TextPosition firstNonSpace(int lineIndex) {
         dstring s = line(lineIndex);

src/dlangui/widgets/editors.d

@@ -1982,6 +1982,29 @@ class EditBox : EditWidgetBase {
                     }
                 }
                 return true;
+			case EditorActions.ToggleLineComment:
+				// TODO
+				return true;
+			case EditorActions.ToggleBlockComment:
+				// TODO
+				return true;
+			case EditorActions.InsertLine:
+                {
+                    correctCaretPos();
+					TextPosition p = _content.lineEnd(_caretPos.line);
+					TextRange r = TextRange(p, p);
+                    EditOperation op = new EditOperation(EditAction.Replace, r, [""d, ""d]);
+                    _content.performOperation(op, this);
+					_caretPos = oldCaretPos;
+                }
+				return true;
+			case EditorActions.DeleteLine:
+                {
+                    correctCaretPos();
+                    EditOperation op = new EditOperation(EditAction.Replace, _content.lineRange(_caretPos.line), [""d]);
+                    _content.performOperation(op, this);
+                }
+				return true;
             default:
                 break;
 		}