From f9deb97229d31f8df0c5c91de128373aa8ffc4e1 Mon Sep 17 00:00:00 2001
From: stefnotch <brandmairstefan@gmail.com>
Date: Sun, 7 Feb 2021 18:03:23 +0100
Subject: [PATCH] Fix custom title bar high dpi issues

Fix #4
---
 Source/Editor/GUI/MainMenu.cs | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/Source/Editor/GUI/MainMenu.cs b/Source/Editor/GUI/MainMenu.cs
index f0f9458e7..081854046 100644
--- a/Source/Editor/GUI/MainMenu.cs
+++ b/Source/Editor/GUI/MainMenu.cs
@@ -186,14 +186,14 @@ namespace FlaxEditor.GUI
         private WindowHitCodes OnHitTest(ref Vector2 mouse)
         {
             var dpiScale = _window.DpiScale;
-            var pos = _window.ScreenToClient(mouse * dpiScale);
 
             if (_window.IsMinimized)
                 return WindowHitCodes.NoWhere;
 
             if (!_window.IsMaximized)
             {
-                var winSize = RootWindow.Size * dpiScale;
+                var pos = _window.ScreenToClient(mouse * dpiScale); // pos is not DPI adjusted
+                var winSize = _window.Size;
 
                 // Distance from which the mouse is considered to be on the border/corner
                 float distance = 5.0f * dpiScale;
@@ -223,11 +223,11 @@ namespace FlaxEditor.GUI
                     return WindowHitCodes.Bottom;
             }
 
-            var menuPos = PointFromWindow(pos);
-            var controlUnderMouse = GetChildAt(menuPos);
+            var mousePos = PointFromScreen(mouse * dpiScale);
+            var controlUnderMouse = GetChildAt(mousePos);
             var isMouseOverSth = controlUnderMouse != null && controlUnderMouse != _title;
             var rb = GetRightButton();
-            if (rb != null && _minimizeButton != null && new Rectangle(rb.UpperRight * dpiScale, (_minimizeButton.BottomLeft - rb.UpperRight) * dpiScale).Contains(ref menuPos) && !isMouseOverSth)
+            if (rb != null && _minimizeButton != null && new Rectangle(rb.UpperRight, _minimizeButton.BottomLeft - rb.UpperRight).Contains(ref mousePos) && !isMouseOverSth)
                 return WindowHitCodes.Caption;
 
             return WindowHitCodes.Client;