From 7f7514867116a63a1efc0f8140cc053638e2c521 Mon Sep 17 00:00:00 2001
From: whitequark <whitequark@whitequark.org>
Date: Mon, 20 May 2019 22:58:07 +0000
Subject: [PATCH] Win32: ignore WM_MOUSEWHEEL events that are forwarded to
 other window.

Before this commit, scrolling the property browser positioned on top
of a face in the main window would highlight the face.
---
 src/platform/guiwin.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/platform/guiwin.cpp b/src/platform/guiwin.cpp
index 0366880a..a39e3515 100644
--- a/src/platform/guiwin.cpp
+++ b/src/platform/guiwin.cpp
@@ -822,6 +822,7 @@ public:
                 event.shiftDown   = (wParam & MK_SHIFT) != 0;
                 event.controlDown = (wParam & MK_CONTROL) != 0;
 
+                bool consumed = false;
                 switch(msg) {
                     case WM_LBUTTONDOWN:
                         event.button = MouseEvent::Button::LEFT;
@@ -872,6 +873,7 @@ public:
                         sscheck(hWindowUnderMouse = WindowFromPoint(pt));
                         if(hWindowUnderMouse && hWindowUnderMouse != h) {
                             SendMessageW(hWindowUnderMouse, msg, wParam, lParam);
+                            consumed = true;
                             break;
                         }
 
@@ -903,7 +905,7 @@ public:
                     }
                 }
 
-                if(window->onMouseEvent) {
+                if(!consumed && window->onMouseEvent) {
                     window->onMouseEvent(event);
                 }
                 break;