From 0fab5eb0718419b7651f823d9299e4f453e76b80 Mon Sep 17 00:00:00 2001
From: Paul Cornett <paulcor@users.noreply.github.com>
Date: Mon, 25 Nov 2019 20:52:12 -0800
Subject: [PATCH] Allow scrollwheel events when mouse is captured with GTK3,
 see #18593

---
 src/gtk/window.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/gtk/window.cpp b/src/gtk/window.cpp
index 16b4df6f58..c211ece237 100644
--- a/src/gtk/window.cpp
+++ b/src/gtk/window.cpp
@@ -5898,6 +5898,7 @@ void wxWindowGTK::DoCaptureMouse()
     gdk_seat_grab(seat, window, GDK_SEAT_CAPABILITY_POINTER, false, NULL, NULL, NULL, 0);
 #else
     const GdkEventMask mask = GdkEventMask(
+        GDK_SCROLL_MASK |
         GDK_BUTTON_PRESS_MASK |
         GDK_BUTTON_RELEASE_MASK |
         GDK_POINTER_MOTION_HINT_MASK |