diff -r e3fe3617b631 -r f9f308c8e0c5 src/mainwindow.h
--- a/src/mainwindow.h	Fri Aug 27 14:38:56 2021 +0300
+++ b/src/mainwindow.h	Sun Aug 29 20:05:24 2021 +0300
@@ -47,6 +47,7 @@
 protected:
 	void changeEvent(QEvent* event) override;
 	void closeEvent(QCloseEvent* event) override;
+	void keyReleaseEvent(QKeyEvent *event) override;
 private:
 	std::unique_ptr<class Ui_MainWindow> ui;
 	DocumentManager documents;
@@ -81,5 +82,4 @@
 	void canvasMouseReleased(Document *document, Canvas *canvas, QMouseEvent *event);
 	void canvasMouseDoubleClicked(QMouseEvent* event);
 	void canvasMouseMoved(Document *document, Canvas *canvas, QMouseEvent *event);
-	void canvasKeyReleased(QKeyEvent*);
 };