From 5ea5afbd2a00d435ad464af1972d70381bc2285f Mon Sep 17 00:00:00 2001
From: reuk <reuk@users.noreply.github.com>
Date: Wed, 28 Jul 2021 19:25:08 +0100
Subject: [PATCH] VST Host:  Avoid resizing plugin views directly on Windows

Previously, plugin views may be set to unexpected sizes by the host,
which could interrupt size updates due to scale factor changes. This
could leave the plugin view at an incorrect size.
---
 .../format_types/juce_VSTPluginFormat.cpp         | 15 ++++++++-------
 1 file changed, 8 insertions(+), 7 deletions(-)

diff --git a/modules/juce_audio_processors/format_types/juce_VSTPluginFormat.cpp b/modules/juce_audio_processors/format_types/juce_VSTPluginFormat.cpp
index 97d8fc7a8b..7771cbb894 100644
--- a/modules/juce_audio_processors/format_types/juce_VSTPluginFormat.cpp
+++ b/modules/juce_audio_processors/format_types/juce_VSTPluginFormat.cpp
@@ -2898,23 +2898,24 @@ public:
         {
             const ScopedValueSetter<bool> recursiveResizeSetter (recursiveResize, true);
 
-            const auto editorSize = plugin.getEditorSize();
             const auto pos = (peer->getAreaCoveredBy (*this).toFloat() * nativeScaleFactor).toNearestInt();
 
            #if JUCE_WINDOWS
             if (pluginHWND != 0)
             {
                 ScopedThreadDPIAwarenessSetter threadDpiAwarenessSetter { pluginHWND };
-                MoveWindow (pluginHWND,
-                            pos.getX(),
-                            pos.getY(),
-                            editorSize.getWidth(),
-                            editorSize.getHeight(),
-                            TRUE);
+                SetWindowPos (pluginHWND,
+                              HWND_BOTTOM,
+                              pos.getX(),
+                              pos.getY(),
+                              0,
+                              0,
+                              SWP_NOSIZE | SWP_NOZORDER | SWP_NOOWNERZORDER);
             }
            #elif JUCE_LINUX || JUCE_BSD
             if (pluginWindow != 0)
             {
+                const auto editorSize = plugin.getEditorSize();
                 auto* symbols = X11Symbols::getInstance();
                 symbols->xMoveResizeWindow (display,
                                             pluginWindow,