From db71a10b29d9b929d72c19eb3d09da45387fc0e3 Mon Sep 17 00:00:00 2001
From: Vadim Zeitlin <vadim@wxwidgets.org>
Date: Tue, 21 Nov 2017 17:27:42 +0100
Subject: [PATCH] Set rotation angle for the initial rotate gesture event in
 MSW

According to MSDN, for the initial rotation even the angle is just
passed directly, so use it.
---
 src/msw/window.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/msw/window.cpp b/src/msw/window.cpp
index 58aed9f66a..bbf245837f 100644
--- a/src/msw/window.cpp
+++ b/src/msw/window.cpp
@@ -5742,7 +5742,11 @@ bool wxWindowMSW::HandleRotateGesture(int x, int y,
     // wxEVT_GESTURE_ROTATE
     wxRotateGestureEvent event(GetId());
 
-    if ( !InitGestureEvent(event, x, y, flags) )
+    if ( InitGestureEvent(event, x, y, flags) )
+    {
+        event.SetRotationAngle(angleArgument);
+    }
+    else // Not the first event.
     {
         // Use angleArgument to obtain the cumulative angle since the gesture
         // was first started. This angle is in radians and MSW returns negative