Apply rule-of-5 since painter holds a resource.

1 files changed, 5 insertions, 0 deletions

diff --git a/win32/PlatWin.h b/win32/PlatWin.h
index 2ffc4a5fb..3db343587 100644
--- a/win32/PlatWin.h
+++ b/win32/PlatWin.h
@@ -81,6 +81,11 @@ struct Painter {
 	explicit Painter(HWND hWnd_) noexcept : hWnd(hWnd_) {
 		::BeginPaint(hWnd, &ps);
 	}
+	// Deleted so Painter objects can not be copied.
+	Painter(const Painter &) = delete;
+	Painter(Painter &&) = delete;
+	Painter &operator=(const Painter &) = delete;
+	Painter &operator=(Painter &&) = delete;
 	~Painter() {
 		::EndPaint(hWnd, &ps);
 	}