From b4144aa78cd88d26d8937fefe34a0654cc1e64cd Mon Sep 17 00:00:00 2001
From: reuk <reuk@users.noreply.github.com>
Date: Tue, 20 Jan 2026 16:42:38 +0000
Subject: [PATCH] Windows: Invalidate entire window when custom scale factor
 changes

This fixes a bug where the window area intersecting the old and new
sizes would not be repainted correctly.
---
 modules/juce_gui_basics/native/juce_Windowing_windows.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/modules/juce_gui_basics/native/juce_Windowing_windows.cpp b/modules/juce_gui_basics/native/juce_Windowing_windows.cpp
index 14c0a63083..5df9d27788 100644
--- a/modules/juce_gui_basics/native/juce_Windowing_windows.cpp
+++ b/modules/juce_gui_basics/native/juce_Windowing_windows.cpp
@@ -2036,6 +2036,7 @@ public:
         if (approximatelyEqual (prev, next))
             return;
 
+        InvalidateRect (hwnd, nullptr, FALSE);
         scaleFactorListeners.call ([&] (ScaleFactorListener& l) { l.nativeScaleFactorChanged (next); });
     }