Dateien, die als Parameter übergeben werden, werden nach dem Start direkt geladen

barecode/src/editor/LineNumberArea.h

@@ -0,0 +1,25 @@
+#pragma once
+
+#include <QWidget>
+
+class CodeEditor;
+
+// ---------------------------------------------------------------------------
+// LineNumberArea – Thin widget painted on the left side of the CodeEditor.
+// Painted by CodeEditor::lineNumberAreaPaintEvent().
+// ---------------------------------------------------------------------------
+class LineNumberArea : public QWidget
+{
+    Q_OBJECT
+
+public:
+    explicit LineNumberArea(CodeEditor *editor);
+
+    QSize sizeHint() const override;
+
+protected:
+    void paintEvent(QPaintEvent *event) override;
+
+private:
+    CodeEditor *m_codeEditor;
+};